Download 4th Term - Summer Training Report @ Nicmar Hyderabad...
SUMMER INTERNSHIP REPORT
For
CONSTRUCTION OF NATURAL DRAFT COOLING TOWER (NDCT) & CHIMNEY IN 2 X 600 MW SHREE SINGAJI THERMAL POWER PLANT, KHANDWA, MADHYA PRADESH.
By
GAMMON INDIA LIMITED
Submitted By AMOGH SHRIVATSAVA
T.SHREEDHAR
R.NO:233004
R.NO:233084
23rd BATCH PGP-ACM
23rd BATCH PGP-ACM
NATIONAL INSTITUTE OF CONSTRUCTION MANAGEMENT & RESEARCH KONDAPUR, HYDERABAD. A.P
ACKNOWLEDGMENT
Before we get to more important things, We would like to thank numerous people, without whom our summer training would have been very difficult.
We would like to thank Gammon India Limited for providing us with the necessary, whole-hearted guidance and valuable suggestions throughout our training period, without which this endeavor would not have been possible.
We are very grateful to Mr. I.S.Mane, Regional Manager & Mr. A.K.Dey, Project Incharge, for their continuous support. We thank Mr. Milind M. Gaikwad (AM II) & Mr. Vishal S Kuwar(AM II), Planning & SMR, for guiding us right from the start.
We profoundly express our gratitude to Mr. R.N.Rai(D.M-I), Executive In-Charge of NDCT, Mr. Vinay Cheerala(AM II) & Mr. Vaibhav A. Tungidwar(AM II) at NDCT & Mr. Jayant Mankar(AM-II), Section In-charge of Chimney,
for being kind & helpful throughout our
training period.
Finally, We acknowledge each and every member of staff at the 2 x 600 MW SHREE SINGAJI THERMAL POWER PLANT, KHANDWA,M.P, for their wholehearted co-operation, which made our summer training comfortable and successful.
AMOGH SHRIVASTAVA 23rd PGP-ACM
T.SHREEDHAR 23rd PGP-ACM
CERTIFICATE
This is to certify that Mr. Amogh Shrivasatava R.No: 233004 and Mr.T.Shreedhar, R.No: 233084 students of NATIONAL INSTITUTE OF CONSTRUCTION MANAGEMENT AND RESEARCH (NICMAR),HYDERABAD have successfully completed their Summer Internship on our Project, Malwa 8826/27 NDCT and Chimney under my guidance and supervision at 2x600MW SHREE SINGAJI THERMAL POWER PLANT, STAGE-I, KHANDWA, MADHYA PRADESH.
For Gammon India Ltd.
A.K.DEY (PROJECT IN-CHARGE)
INDEX Contents
Chapter No.
Page No.
1
Company's Profile
1.1
Introduction
1
1.2
History
2
1.3
Gammon Mission, Vision, Quality policy
3
1.4
Management Team
4
1.5
Subsidiaries
4
1.6
PPP
5
1.7
Other Clients
5
1.8
Health, Safety & Environment
6
1.9
Areas of specialization
6
1.10
Current projects
7
2
Project Profile
11
2.1
Location
11
2.2
Importance of the project
13
2.3
Introduction to the Project
14
2.4
Salient features of the Contract
15
2.5
Terms & Conditions of contract
16
3
Cooling Tower
21
3.1
Introduction
21
3.2
Types of Cooling Tower
21
3.3
Photograph
22
3.4
Categorization by Air to Water flow
25
3.5
Operation Principle of NDCT
26
3.6
Technical Specification & general Parameters
28
3.7
Codes & standards
30
3.8
Design Criteria of Cooling Tower
31
3.9
Scheme, Sequence and Method of Construction
32
4
Chimney
62
4.1
Inroduction
63
4.2
Technical Specification & general Parameters
65
4.3
Method of Construction
66
5
Quality Plan
87
5.1
Scope
87
5.2
Normative Reference
91
5.3
Terms & Definations
92
5.4
Quality Management System
93
5.5
Management Responsibility
96
5.6
Resource Management
103
5.7
Product Realization
106
5.8
Measurement, Analysis & Improvement
111
6
Construction Site Organization & Management
115
6.1
Site layout
115
6.2
Site Offices & Building
117
6.3
Site Mobilization
119
6.4
Site Manager (Execution)
121
7
Project Management
123
7.1
Importance Of Planning
123
7.2
Steps In Project Mangement
124
7.3
Four Basic Elements of Project Management
127
7.4
Project Management Life Cycle
128
8
Maintainance of Site Document
134
9
Administration/Management
135
9.1
Site Organization Chart
135
9.2
Responsibilities
135
10
Accounting
137
11
Store Management
138
11.1
Defination of material Management
138
11.2
Aims of Material Management
138
11.3
Scope of Material management
138
11.4
Objectives of Material Management
138
11.5
Purpose of Material Management
139
11.6
Classification of Materials
139
11.7
Purchasing
141
11.8
Store Functions
143
11.9
Store Accounting
145
12
Safety
151
GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
CHAPTER 1: COMPANY PROFILE
1.1 INTRODUCTION Gammon India is not only the largest civil engineering construction company in India, but can lay claim for the largest number of bridges built in the whole of Commonwealth. With over seventy years of tradition in the field of construction. Gammon is a name that is inextricably woven into the fabric of India. As builders to the nation, Gammon has made concrete contributions by designing and constructing bridges, Cooling towers, Chimney ports, harbors, thermal and nuclear power stations, dams, high-rise structures, chemical and fertilizer complexes environmental structures, cross country water, oil and gas pipelines. Gammon has accomplished this by fusing tremendous engineering knowledge with innovative skills, harnessing men and materials to build structures. Structures that stand out as living testimonies to the victory of man over nature. Structures conceived and built by minds in constant search of new methods, ideas, applications and solutions. Because Gammon believes that today's solutions will not be adequate tomorrow. This insatiable quest has led Gammon to pioneer Reinforced and Prestressed Concrete, Long span bridges, Under water concreting using the Concrete process, Thin shell structures, NonShrinking concrete, Aluminum trusses for launching precast, prestressed beams and many more. These resounding achievements have won Gammon the status of an R&D Institution - an unequalled honor for an unmatched Performance. The planners, designers and construction specialists at Gammon have proved their competence and innovative skills here and abroad. And driving them to seek, to build and not to yield, is a team of professionals at the Head Office led by the Chairman & Managing Director, Mr. Abhijit Rajan.
"Reaching out to heights of excellence" Nicmar Hyderabad.
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Summer Internship Report-2010.
1.2 HISTORY In the beginning was a man and his vision a colossus throbbing with dynamism and pulsating with energy. A man born to build. A man whose very presence was a source of inspiration. Mr. John C. Gammon. The founder of Gammon India Limited. A Civil Engineer who can more aptly be called 'The Sculptor of Concrete in India'. A man who preached and practiced order and functional expression in structures - the enduring values that helped build the Gammon edifice. From monuments and bridges to reservoirs and jetties, his innovative vision and engineering skill, his intuitive understanding of the materials and systems of construction sought and fought answers to some of the most challenging examples in civil engineering projects. His abiding faith in people and their abilities inspired them to meet challenge after challenge. Mr. Gammon had several firsts to his credit. The RCC pile foundations for the Gateway of India, the thin shell structures of the Meerut Garages, the colloidal grouting process at Mundali Weir, the hyperbolic cooling towers at Sabarmati - are but a few of his outstanding achievements. Bridges like Bonum and Patalganga, built by him have stood the test of time as monuments to his ingenious skill. Today, Gammon India Ltd., not only carries his name and vision, but stands out as a Gateway for technological excellence in civil engineering.
“Excellence built on the foundations of perfection”
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
1.3 GAMMON MISSION, VISION & QUALITY POLICY MISSION
VISION
QUALITY POLICY
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
1.4 MANAGEMENT TEAM The Management team at Gammon is led by the Chairman and Managing Director, Mr. Abhijit Rajan. He is assisted by his able team of the following directors: Mr. Peter Gammon Mr. Rohit Modi Mr. Himanshu Parikh Mr. Rajul A. Bhansali Mr. Digambar C. Bagde Mr. Chandrahas C. Dayal Mr. Atul Dayal Dr. Naushad Forbes Mr. Jagdish C. Sheth Mrs. Urvashi Saxena Mr. Naval Choudhary Mr. Parvez Umrigar Mr. Atul Kumar Shukla
(Chairman Emeritus) (Deputy Managing Director) (Executive Director) (Executive Director- International Operations) (Transmission And Distribution) Business) (Director) (Director) (Director) ( Additional Director ) ( Additional Director ) (Additional Director) ( Additional Director ) ( Additional Director )
Each segment of construction that the Company engages in is looked after executives with a deep commitment to quality, timeliness of completion and inherent expertise and skill sets that assist Gammon in being a leader in the construction arena.
1.5 SUBSIDIARIES As on 31st March 2009 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13.
Gammon Infrastructure Projects Ltd. GIPL Gammon Cooling Towers Ltd. Gammon and Billimoria Ltd. Rajahmundry Expressway Ltd. (REL) Andhra Expressway Ltd. (AEL) Cochin Bridge Infrastructure Co. Ltd. (CBICL) Mumbai Nasik Expressway Ltd. (MNEL) Sikkim Hydro Power Ventures Ltd. (SHVPL) Gammon Project Developers Ltd. (GDPL) Gammon Realty Limited (GRL) Kosi Bridge Infrastructure Company Ltd. (KBICL) Gorakhpur Infrastructure Company Ltd. (GICL) Marine Projects Services Ltd.
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
1.6 PPP Presence in Public Private Partnership Projects The Government is actively pursuing Public Private Partnerships (PPP) to bridge the infrastructure deficit in the country. Several initiatives have been taken during the last three years to promote PPP in sectors like ports, highways, power, roads, bridges etc. Having been in the field of Infrastructure project contracting for a number of years, it was natural that the Gammon group moved into the business of Infrastructure Projects Development. The resources constraint with the Government and an immediate need of developing Infrastructure in the Country were the primary drivers in the Gammon group reaching this logical conclusion. Gammon Infrastructure Projects Limited, a subsidiary Company of Gammon India Limited, has been leading the Gammon Group's forays into development of infrastructure projects on Public Private Partnership (PPP) format. GIPL is among the first companies in India to be modeled as an infrastructure development company and currently developes roads, bridges, ports and hydro power and has also identified the following areas for project development and infrastructure investment: urban infrastructure, airports, special economic zones, water and waste water management, railways, power transmission lines and agricultural infrastructure. GIPL also offers services in other areas of project development, such as project advisory services and sector specific O&M activities.
1.7 OUR CLIENTS Since we have a strong presence across all segments of the construction industry we have a variety of clients including: Delhi Metro Rail Corporation Limited GAIL India Limited Godrej Properties Gorakhpur Infrastructure Company Limited Government of Andhra Pradesh Government of West Bengal Kosi Bridge Infrastructure Company Limited Ministry of Housing, Electricity and Water, Sultanate of Oman Municipal Corporation of Amritsar National Highway Authority of India National Hydroelectric Power Corporation Limited Nuclear Power Corporation of India Sabarmati River Front Development Corporation Limited Satluj Jal Vidhyut Nigam Limited and others.
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
1.8 HEALTH, SAFETY AND ENVIRONMENT 1. We at Gammon are committed to provide a safe and healthy working environment for our employees by adopting a proactive approach, prior to commencement of any project. 2. It is part of our work ethic to ensure that safety, health and environment safeguards are in place right from the inception to the execution stage. 3. We accept the need for constant up gradation of safety & health standards commensurate with the rapid changing technology in construction.
1.9 AREAS OF SPECIALISATION: Transportation Engineering Projects Bridges - River/Creek Bridges, Special Bridges Flyovers Viaducts Aqueducts Roads Highways Railways
Power Projects Thermal: Thermal Power stations. Natural draft Cooling Towers. Counter flow Cooling Towers. Chimneys. Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
Hydro: River Valley/Irrigation Projects Dams Tunnels Power House TBM Tunneling Major Buildings, Industrial & Commercial Structures Marine Projects Jetties, Wharfs, Berths Ground Engineering Works Piling works Diaphragm wall Environmental Projects Water Treatment Plant Effluent Treatment Plant Integrated Water Supply Project Pipeline Projects Oil & Gas Water Pipeline
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
1.10 CURRENT PROJECTS
Group-3 Job List Sr. No.
Job No.
Job Description
CMS
Name of PMS Champion
1
8107
Parbati HE stage 2
ABB
SNN
2
8208
Sewa HEP
ABB
SNN
3
8302
Koldam HE project
ABB
SNN
4
8437
Parbati HE stage 3
ABB
SNN
5
8525
Rampur HEP
ABB
SNN
6
8735
Bhutan HEP
ABB
SNN
7
8303
Kalpakkam (All Jobs)
BRKN
PPA
8
8612
Jindal Civil Works-Coke Oven
GSP
AN
9
8633
Ennore Civil Works
GSP
PPA
10
8640
Ennore Chimney
GSP
PPA
11
8715
Bellary NDCT-2
GSP
AN
12
8716
Tiroda Chimney
GSP
PAS
13
8717
Tiroda Civil Works
GSP
PAS
14
8730/31
Ennore IDCT
GSP
PPA
15
8813
Vallur Chimney and Civil Works
GSP
PPA
16
8820
Tuticorin Civil Works
GSP
AN
17
8821
Tuticorin Chimney
GSP
AN
18
8834
Tiroda Chimney ( Unit 4 & 5)
GSP
PAS
19
8842
Tiroda Civil Works (Unit 4 & 5)
GSP
PAS
20
8845
NLCL Chimney, Tuticorin
GSP
AN
21
8846
Tuticorin Warehouse
GSP
AN
22
8849
Tuticorin NLC NDCT's
GSP
AN
Godrej Estate, Kalyan
PKB
SNN
23 24
8447
Neelkanth Kingdom
PKB
SNN
25
8603
Pebble Bay, Bangaluru
PKB
AN
26
8606
Leela palace Hotel, Chennai
PKB
PPA
27
8815
GSTAAD Hotel Project, Bangaluru
PKB
AN
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
28
8843
Galleria Mall, Bangaluru
PKB
AN
29
8844
Isckon Temple, Mayapuri
PKB
PAS
30
New
Ozone/Lucknow/ Raheja/Runway
PKB
SNN
31
8609
Korba Chimney
RBS
MS
32
8616
Jaipur Civil Works for JSSL
RBS
MS
33
8619
Jaigad Chimney
RBS
ISM
34
8624/25
Korba IDCT
RBS
MS
35
8628
Simhadri Chimney
RBS
AN
36
8631
Aravali Chimney
RBS
ISM
37
8634/35
Aravali NDCT
RBS
ISM
38
8636-38
Bhusawal NDCT & Chimney
RBS
ISM
39
8641/42
Kadappa Chimney & IDCT
RBS
AN
40
8704/05
Simhdri NDCT
RBS
AN
41
8706
Mundra Chimney
RBS
ISM
42
8711
Mundra Civil Works
RBS
ISM
43
8724
Bongaigaon Chimney
RBS
MS
44
8733/34
Ukai NDCT
RBS
ISM
45
8804-07
Krishnapatnam NDCT & Chimney
RBS
AN
46
8814
Sasan Chimney
RBS
MS
47
8818
BARH Chimney
RBS
ISM
48
8819
Rosa Chimney
RBS
ISM
49
8826/27
Malwa NDCT & Chimney
RBS
ISM
50
8829/30
Korba NDCT
RBS
MS
51
8831
Raghunathpur Chimney
RBS
MS
52
8832
Mauda Chimney
RBS
ISM
53
8835
Raigarh Chimney
RBS
MS
54
8838/39
Parli NDCT Unit -8
RBS
ISM
55
8840
Raigarh NDCT
RBS
ISM
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
CHAPTER 2 PROJECT PROFILE
2.1 LOCATION
Malwa NDCT
MAP OF INDIA
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
Malwa NDCT
District Map of Madhya Pradesh
Malwa NDCT
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
2.2 IMPORTANCE OF THE PROJECT
Electricity is one of the most essential entities known to us. Life without electricity sends us back by many centuries. It has played a major role in the development of the state, the country and the world. It has, in short, become a necessity to us.
The power consumption is increasing day by day and so is the demand for more electricity. There is a severe need to construct bigger and better power stations all across the world to meet the demands of both Industrial and Domestic purposes.
The Madhya Pradesh Government has taken the initiative to increase the electric power generation across the state.
As a result, Madhya Pradesh Power Generation Co. Ltd. (MPPGCL) has taken the decision for to construction of Shree Singaji Thermal Power Station (2x 600MW).
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
2.3 INTRODUCTION TO THE PROJECT
Shree Singaji Thermal Power Station ( 2 X 600 MW) is situated in the Khandwa District, Khandwa, State Madhya Pradesh. The site location is around 40 km from Khandwa Railway Station. The total cost of 2 X 600 MW Shree Singaji T.P.S STAGE-I is Rs.8000 Crores.
The scope of work for Gammon India Ltd. in the S.S.T.P.S is as follows: For supply of equipments for NDCT and Multi-flue Chimney package including supply of mandatory spares. For erection, testing and commissioning of NDCT and Multi-flue Chimney. For construction of NDCT, Multi-flue Chimney including associated civil and structural works.
The total cost of project for Gammon India Ltd. is Rs.169.77 Crores.
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
2.4 SALIENT FEATURES OF THE CONTRACT OWNER
MADHYA PRADESH POWER GENCO COMPANY LTD SHREE SINGAJI THERMAL POWER PLANT STAGE-I
PROJECT ( 2 X 600MW)
OWNER’S CONSULTANT
L&T SARGENT & LUNDY LTD
EPC CONTRACTOR
L & T EPC POWER LTD
CONTRACTOR’S CONSULTANT SUB-CONTRACTOR
DEVELOPMENT CONSULTANT LTD
GAMMON INDIA LTD CONSTRUCTION OF 2NO‟S COOLING TOWERS(170m) &
PACKAGE 1NO CHIMNEY (275m)
CONTRACT VALUE
Rs 169,77,00,000/-
TYPE OF CONTRACT
LUMP SUM CONTRACT
CONTRACT AWARD
10/12/2009
CONTRACT PERIOD
26 MONTHS
SCHEDULED COMPLETION
NDCT 1 : 10/10/2011 NDCT 2: 10/02/2012 CHIMNEY:10/10/2011
MOBILIZATION ADVANCE
10% OF CONTRACT VALUE AS MENTIONED IN LETTER OF AWARD
SECURITY MONEY
10% OF CONTRACT VALUE AS MENTIONED IN L.O.A
LIQUIDITY DAMAGES
0.5% OF CONTRACT VALUE PER WEEK OF DEALY & MAXIMUM UPTO 10% OF CONTRACT VALUE
STATUTORY VARIATION IN TAXES
WILL BE CONSIDERED BY MPGCOL AFTER SUFFICIENT SUBMISSION OF DOCUMENTS
R.A. BILLS
AS PER BBU.
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
2.5 TERMS AND CONDITIONS OF THE CONTRACT 2.5.1 TERMS OF PAYMENT 1. Terms of payment shall be back to back basis. 2. L&T EPC POWER Limited shall raise its bill to MPPGCL against bill received from GIL and shall make it within 45 days. GIL is not entitled to any claim for any delay in payment. 3. Payment terms for Civil Works portion (Including construction materials but excluding cost of Structural of Natural Draft cooling Tower) 1. 10% of the amount of total civil works shall be paid to contractor in advance. 1.1. Acceptance of letter of acceptance & Signing the contract agreement. 1.2. On Establishment of site office. 1.3. Receipt of invoice. 1.4. Submission of unconditional and Irrecoverable Bank Guarantee(s) performance security at 10% of contract amount. 1.5. Submission of detail PERT networks for Schedules.
against
2. 80% of the progressive payments of total civil works portion on installation services components of contract price along with 100% taxes and duties. 3. 5% of civil works portion of installation services “ on completion of facilities including all associated auxiliary and ancillary works” 4. 5% of Civil works of installation services “on issue of operational acceptance certificates. 4.
Payment terms for Structural Works portion of Natural Draft cooling Tower. 1. 10% of the amount of total Structural works shall be paid to contractor in advance against performance security 1.1. Acceptance of letter of acceptance & Signing the contract agreement. 1.2. On Establishment of site office. 1.3. Receipt of invoice. 1.4. Submission of unconditional and Irrecoverable Bank Guarantee(s) performance security at 10% of contract amount. 1.5. Submission of detail PERT networks for Schedules.
against
2. 40% of the amount of total structural work shall be paid to contractor for procurement of the steel material at site. 3. 18% of the amount of total structural work shall be paid to contractor for fabrication work of the structural work. 4. 12% of the amount of total structural work shall be paid to contractor for Erection works of the NDCT. 5. 10% of the amount of total structural work shall be paid to contractor for final alignment, bolting and welding. Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
6. 5% of the amount of total structural work shall be paid to contractor for associate auxiliaries and auxiliary works 7. 5% of the amount of total structural work shall be paid to contractor for Guarantee test and issue of operation. 5. Payment terms for Civil Works portion (Including construction materials but excluding cost of Structural of chimney) 1. 10% of the amount of total civil works shall be paid to contractor in advance. 1.1. Acceptance of letter of acceptance & Signing the contract agreement. 1.2. On Establishment of site office. 1.3. Receipt of invoice. 1.4. Submission of unconditional and Irrecoverable Bank Guarantee(s) against performance security at 10% of contract amount. 1.5. Submission of detail PERT networks for Schedules. 2. 80% of the progressive payments of total civil works portion on installation services components of contract price along with 100% taxes and duties. 3. 5% of civil works portion of installation services “ on completion of facilities including all associated auxiliary and ancillary works” 4. 5% of Civil works of installation services on issue of operational acceptance certificates. 6. Payment terms for Structural Works portion of chimney 1. 10% of the amount of total Structural works shall be paid to contractor in advance against performance security 1.1. Acceptance of letter of acceptance & signing the contract agreement. 1.2. On Establishment of site office. 1.3. Receipt of invoice. 1.4. Submission of unconditional and Irrecoverable Bank Guarantee(s) against performance security at 10% of contract amount. 1.5. Submission of detail PERT networks for Schedules. 2. 40% of the amount of total structural work shall be paid to contractor for procurement of the steel material at site. 3. 18% of the amount of total structural work shall be paid to contractor for fabrication work of the structural work. 4. 12% of the amount of total structural work shall be paid to contractor for Erection works of the chimney. 5. 10% of the amount of total structural work shall be paid to contractor for final alignment, bolting and welding. 6. 5% of the amount of total structural work shall be paid to contractor for associate auxiliaries and auxiliary works. 7. 5% of the amount of total structural work shall be paid to contractor for Guarantee test and issue of operation. Nicmar Hyderabad.
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Summer Internship Report-2010.
2.5.2 STATUTORY VARIATION IN TAXES AND DUTIES Any upward/downward variation of taxes & duties after the record data shall be L&T/ MPPGCL‟S account. 1. If there is any upward variation of taxes & duties after the record date, the additional financial implication due to variation in taxes would be paid by L&T to GIL on pro-data basis. 2. For this GIL has to be make and documentary evidence to L&T, which L&T will forward it to MPPGCL and this claim will be accepted by MPPGCL and the payment will be made in line. 3. If there is an increase in taxes & duties during the period of work for any reason which the GIL is responsible then such increase shall be borne by GIL within the quoted to L&T / MPPGCL if there is any delay from their side. 4. This variation shall not be applicable on procurement of raw materials and on the bought out items dispatches directly from sub-vendor‟ s work to site.
2.5.3. LIQUIDATED DAMAGES LIQUIDATED DAMAGES FOR DELAY: 1. L&T shall levy the liquidated damage on GIL at rate of 0.5% of the total contract price per week of delay or part thereof subject to maximum of 10% of the total contract price. 2. This damage will be collected by GIL from contract price or securities available with L&T. LIQUIDATED DAMAGES FOR DELAY IN COMPLETION OF INTERMITTENT ACTIVITIES: Any delay during execution of work under the contract scope that result into delay in execution of main plant package then it become liable for levy of liquidated damage on GIL at end work. Final decision about the quantum and work component on which the liquidated damages to be imposed will be sale discretion of the component authority of L&T/ MPPGCL.
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
S no.
Parts of work
1 2 3 4 5 6
Shell completion –NDCT-1(100m) Shell completion –NDCT-1(up to top) Casting & erection of internal walls & columns –NDCT-1 Shell completion –NDCT-2(100m) Shell completion –NDCT-2(100m) Casting & erection of internal walls & columns –NDCT-2
S no.
Parts of work
1 2 3 4 5
Chimney shell completion Chimney shell completion Chimney shell completion Chimney shell completion Chimney shell completion
(up to 50m) (up to 100m) (up to 150m) (up to 200m) (up to 250m)
Summer Internship Report-2010.
Milestone dates 31.01.2011 30.04.2011 30.06.2011 31.05.2011 28.08.2011 30.10.2011 Milestone dates 14.06.2010 30.07.2010 14.09.2010 30.10.2010 15.12.2010
Liquidated Damages 0.2% 0.5% 0.5% 0.2% 0.5% 0.5%
Liquidated Damages 0.1% 0.1% 0.2% 0.2% 0.5%
2.5.4. PRE-DISPATCH INSPECTION AND TESTING L&T and MPPGCL authority shall carry out pre-dispatch inspection of equipments as per approved quality assurance plan, which will be manufactured by L&T & MPPGCL.
2.5.5. DEVIATION IN SPECIFICATION GIL shall not consent in writing of L&T take any deviation in respect of any equipment, material etc. otherwise it will be considered to be breach of contract and payment will not be made for such deviation.
2.5.6. QUALITY CONTROL GIL is committed to adhere the FQAP strictly. Maintaining list of Quality related records Organize quality audits and provide feedback to PM and HQ – QA/QC group
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2.5.7. TRAIL OPERATION AND HANDING OVER 1. The period of the trail operation of the system shall be 28 days during which period the entire system must be operated and investigation. 2. During trail operation if it is found to be un-satisfactory then GIL has to be the modification and trail operation will be done again.
2.5.8. PERFORMANCE GUARANTEE TESTS 1. This test must be conducted within 45 days after the completion of trail operation or agreed upon by both the parties. 2. GIL should provide all the instruments requires for the performance guarantee test.
2.5.9. GUARANTEE/WARRANTY PERIOD 1. GIL shall guarantee that equipment supplied shall be new and free from defect for a period of 12 calendar months after the completion of performance guarantee test. 2. The liability of GIL towards latent defects shall be for a period of 2 years a period from the date of completion of guarantee/warranty period.
2.5.10. CROSS FALL BREACH AGREEMENT According to this agreement if there is breach any one of the three contracts then is automatically considered for the other also and L&T has the right to cancel the other two contracts.
2.5.11. CONSULTANTS CONTRACTOR CONSULTANT: Spectrum Techno-Consultant Pvt Limited is the consultant for design and engineering for NDCT. L & T POWER CONSULTANT: M/S Development Consultant Pvt. Ltd is the Consultant for the design and engineering. MPPGCL CONSULTANT: M/S L & T Sargent & Lundy is the Consultant for the design and engineering.
Nicmar Hyderabad.
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CHAPTER 3 COOLING TOWER 3.1 INTRODUCTION Cooling towers are heat removal devices used to transfer process waste heat to the atmosphere. Cooling towers may either use the evaporation of water to remove process heat and cool the working fluid to near the wet-bulb air temperature or solely on air to cool the working fluid to near the dry-bulb air temperature. Common applications include cooling the circulating water used in oil refineries, chemical plants, power stations and building cooling. The towers vary in size from small roof-top units to very large hyperboloid structures that can be up to 200 meters tall and 140 meters in diameter, or rectangular structures that can be over 40 meters tall and 80 meters long. Smaller towers are normally factory-built, while larger ones are constructed on site.
3.2 TYPES OF COOLING TOWERS: There are three main types of cooling towers: 1. Natural draft: This utilizes buoyancy via a tall structure. Warm, moist air naturally rises due to the density difference to the dry, cooler outside air. Warm moist air is less denser than dry air at the same pressure. This moist air buoyancy produces a current of air through the tower. 2. Mechanical draft: which uses power driven fan motors to force or draw air through the tower. 1. Induced draft: A mechanical draft tower with a fan at the discharge which pulls air through tower. The fan induces hot moist air out the discharge. This produces low entering and high exiting air velocities, reducing the possibility of recirculation in which discharged air flows back into the air intake. This fan/fill arrangement is also known as draw-through. 2. Forced draft: A mechanical draft tower with a blower type fan at the intake. The fan forces air into the tower, creating high entering and low exiting air velocities. The low exiting velocity is much more susceptible to recirculation. With the fan on the air intake, the fan is more susceptible to complications due to freezing conditions. Nicmar Hyderabad.
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Another disadvantage is that a forced draft design typically requires more motor horsepower than an equivalent induced draft design. The forced draft benefit is its ability to work with high static pressure. They can be installed in more confined spaces and even in some indoor situations. This fan/fill geometry is also known as blow-through. 3. Fan assisted natural draft. A hybrid type that appears like a natural draft though airflow is assisted by a fan.
3.3 Photograph
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Fig: Natural draft cooling tower
Fig: Forced draft cooling tower
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Fig: Induced Draft CT(Counter flow)
Summer Internship Report-2010.
Fig: Induced Draft CT with fill(Counter flow)
Fig: Induced Draft CT (Cross flow)
Fig: Induced Draft CT single-flow (Cross flow)
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3.4 CATEGORIZATION BY AIR-TO-WATER FLOW Cross flow: Cross flow is a design in which the air flow is directed perpendicular to the water flow. Air flow enters one or more vertical faces of the cooling tower to meet the fill material. Water flows (perpendicular to the air) through the fill by gravity. The air continues through the fill and thus past the water flow into an open plenum area. A distribution or hot water basin consisting of a deep pan with holes or nozzles in the bottom is utilized in a cross flow tower. Gravity distributes the water through the nozzles uniformly across the fill material.
Counter flow: In a counter flow design the air flow is directly opposite to the water flow. Air flow first enters an open area beneath the fill media and is then drawn up vertically. The water is sprayed through pressurized nozzles and flows downward through the fill, opposite to the air flow. Common to both designs: The interaction of the air and water flow allows a partial equalization and evaporation of water. The air, now saturated with water vapor, is discharged from the cooling tower. A collection or cold water basin is used to contain the water after its interaction with the air flow. Both cross flow and counter flow designs can be used in natural draft and mechanical draft cooling towers.
Counter flow
Nicmar Hyderabad.
&
Cross Flow
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3.5 OPERATION PRINCIPLE OF NDCT
The cooling tower operation is based on evaporative condensation and exchange of sensible heat. Cooling effect is accomplished by transferring apportion of liquid into vapor state there by releasing latent heat of vaporization. Hot water is pumped to a certain height and then distributed through piping system and discharged through nozzles to splash over a system called filling (or) stacking. The water splashes, drips and flows downwards through the filling. The ascending air which enters to tower through the open space between the supporting columns rises through the open space between the supporting columns rises through the droplets of hot water through evaporation and consequently cools the water through evaporation and convection. The cooled water collected in a pond and re circulated by adding loss of water.
3.5.1 COMMONLY USED TERMS Drift - Water droplets that are carried out of the cooling tower with the exhaust air. Drift droplets have the same concentration of impurities as the water entering the tower. Blow-out - Water droplets blown out of the cooling tower by wind, generally at the air inlet openings. Water may also be lost, in the absence of wind, through splashing or misting Plume - The stream of saturated exhaust air leaving the cooling tower. The plume is visible when water vapor it contains condenses in contact with cooler ambient air. Blow-down - The portion of the circulating water flow that is removed in order to maintain the amount of dissolved solids and other impurities at an acceptable level. Nicmar Hyderabad.
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Leaching - The loss of wood preservative chemicals by the washing action of the water flowing through a wood structure cooling tower. Noise - Sound energy emitted by a cooling tower and heard at a given distance and direction. The sound is generated by the impact of falling water, by the movement of air by fans, the fan blades moving in the structure, and the motors, gearboxes or drive belts. Approach - The approach is the difference in temperature between the cooled-water temperature and the entering-air wet bulb temperature. Range - The range is the temperature difference between the water inlet and water exit. Fill - Inside the tower, fills are added to increase contact surface as well as contact time between air and water. Thus they provide better heat transfer. The efficiency of the tower also depends on them. There are two types of fills that may be used: Film type fill (causes water to spread into a thin film) Splash type fill (breaks up water and interrupts its vertical progress)
Nicmar Hyderabad.
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3.6 TECHNICAL SPECIFICATIONS AND GENERAL PARAMETERS
General Parameters of NDCT
S.NO Description 1
Quantity
2 No‟s
2
Height
170m
3
Type of Tower
Counter flow with P.V.C film fill
4
Water flow rate
75,000 Cum/hr
5
Cooling Range
10 Degree Celsius
6
Hot Water Temperature
43 Degree Celsius
7
Cooled Water temperature
33 Degree Celsius
8
Design Dry bulb temperature
39.78 Degree Celsius
9
Relative Humidity
40 ˚c
10
Design Capacity
18,750 cum/hr (flow through strainers)
11
Design Pressure
1 kg/cm2
12
Ratio of water to air weight
28 Degree Celsius
13
Location
N 22˚ 06‟ 08” & E 76˚ 32‟ 45”
14
Coal Required
8.18 Million tons Annually
15
Heavy fuel & HDS Required
15,000 kilolitres
16
Proposed Plant zone
Seismic Zone-III
17
Water Resource
Indra Sagar Reservoir construction on Narmada river ( 6km away from site)
18
Construction method
Jump Form method
19
Cooling Tower Shell
Hyperbolic Paraboloid shape
20
Cooling Tower Manufacture
M/S Gammon India Ltd
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TECHNICAL SPEICIFICATION OF NDCT
S.NO Description 1
Tower Capacity
75000 Cum/Hr
2
Cooling Range
10°C
3
Diameter at sill Level
132M
Design atmospheric Wet Bulb 4
Temperature
28°C
5
Relative Humidity
60%
6
Cooled water temperature
33oC
7
Hot water temperature
43oC
8
Drift Loss
0.005% (Maximum)
9
Excavation
49390X2 cum (Approx.)
10
PCC
3028X2 cum (Approx.)
11
RCC
28500X2cum (Approx.)
12
Reinforced Steel
3896x2 MT (Approx.)
13
Nozzles
11700x2 Nos (Approx.)
14
Shuttering Quantity
136605x2 Sqm (Approx.)
15
Bituminous painting
140510x2 Sqm (Approx.)
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3.7 CODES AND STANDARDS IS:11504 (Re-Affirmed 1992) IS:1786
Criteria For Structural Design of Reinforced Concrete Natural Draft Cooling Towers.
(Re-Affirmed 1990)
Specification For High Strength Deformed Steel Bars And Wires For Concrete Reinforcement.
IS:456-2000
Plain And Reinforced Concrete –Code of Practice.
IS:10262 (Re-Affirmed 1990)
Recommended Guidelines For Concrete Mix Designs.
IS:383-1997
Specifications For Coarse And Fine Aggregates From Natural Sources For Concrete.
IS:2386 (Re-Affirmed 1997)
Methods of Test For Aggregates For Concrete.
IS:1199 (Re-Affirmed 1999)
Methods of Sampling And Analysis of Concrete
IS:12269
Specification For 53 Grade Ordinary Portland Cement.
IS:269
Specification for 33 grade ordinary Portland cement
IS:8041
Specification for 43 grade ordinary Portland cement
IS:432
Specification for mild steel and medium tensile bars and hard drawn steel wire for concrete reinforcement.
IS:516
Methods of tests for strength of concrete.
IS:800
Code of practice for General Construction in steel.
IS:875
Code of practice for Design Loads for Buildings and Structures.
IS:650
Specification for standard sand for testing of cement.
IS:2210
Criteria for the design of RC shell structures and folded plates.
BS:4485
Specification for Water Cooling Towers (Part 1 to 4).
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3.8 DESIGN CRITERIA OF COOLING TOWER
The following loads shall be considered for the design of cooling tower which are as follows: 1) Dead Loads: - For assessing the self weight of the structure, the specific weight of the concrete shall be taken as 2500 Kg/sqm. All other loads shall be assessed in accordance with relevant codal provision. 2) Seismic/Earthquake load: - According to IS: 1893(part1&4) using the spectrum method and 5% damping shall be considered for analysis. 3) Thermal effect: - Due to this effect stresses are developed. It shall not exceed value given in IS: 4998(part1)-1975. 4) Permissible stresses for shell: - It shall not exceed as prescribed in clause 7.0 of IS: 4998(part1)-1975 for various combination. Except for the case of dead load + wind load the maximum permissible stress in concrete shall not exceed 0.32FC (FC: - compressive strength of concrete in Kg/sq.cm). 5) Wind load: - Wind load loading shall conform of IS: 875(part3)-1987. Dynamic analysis shall be carried and stability must be ensured under such condition. Wind pressure at given height shall be compute theoretically by Pz = 0.6Vz^2 N/m2 (IS: 875(part3)-1987) Wind parameter for calculating wind speed: 6) Basic wind speed: - 39m/s (up to 10m above normal ground level). Same in Bhusawal According to IS: 875(part3)-1987. And various pressure K1, K2 & K3 from IS: 875(part3)-1987.
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3.9 SCHEME, SEQUENCE & METHOD OF CONSTRUCTION
3.9.1 SCHEME OF CONSTRUCTION
1. Excavation. 2. P.C.C. 3. Footing and pond wall. 4. Pond floor and grillage column footing. 5. Diagonal column. 6. Ring beam and hyperbolic shell. 7. Pre-casting of laths. 8. Pre-casting of bearer beam, pipe supporting beam, tie beam, bear block. 9. Pre-casting of grillage column, main and cross beams. 10. Erection of pre-casting of grillage column, main and cross beams. 11. Casting of bracing site. 12. Casting of main and secondary ducts. 13. Erection of laths. 14. Hot water inlet pipe. 15. Hot water distribution A.C pipes. 16. Finishing item. 17. Testing and commission.
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3.9.2 SEQUENCE OF OPERATIONS
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3.9.3 METHOD OF CONSTRUCTION
1. Open excavation for foundations
1.1 Sequence: 1.1.1 Take the block levels with clients. 1.1.2 Mark the outer line of excavation considering side slopes. 1.1.3 Excavate the soil. 1.1.4 After meeting soft/hard rock, take the block levels with clients. 1.1.5 Finalize the level by excavate the soft/hard rock up to the required level by chiseling, drilling and blasting.
Excavation
Nicmar Hyderabad.
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Blasting
Nicmar Hyderabad.
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2 (a) PCC below foundation
2.1 Sequence: 2.1.1 Clean the surface. 2.1.2 Check the required level and slope before concreting. 2.1.3 Prepare the mix design well in advance. 2.1.4 Stock the raw material for concreting like aggregate, sand, water and cement as per plan near the mixer. 2.1.5 Place the mixer as per plan with necessary chutes. 2.1.6 Prepare walkway arrangement for carrying and pouring the concrete. 2.1.7 Weigh the material as per mix design and convert it to corresponding volume. 2.1.8 Pour the concreting as per pouring pattern layer by layer. 2.1.9 At the end check the proper slope and make smooth finishing the surface of PCC. 2.1.10 Prepare the proper curing arrangements.
Nicmar Hyderabad.
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Summer Internship Report-2010.
2(b) PCC on Pond floor 2.1 Sequence: 2.1.1 Clean the surface. 2.1.2 Remove the black cotton soil present and use plumb to fill the extra depth. 2.1.3 Stock the raw material for concreting like aggregate, sand and cement. 2.1.4 Ready the machinery. 2.1.5 Prepare walkway arrangement for pouring the concrete. 2.1.6 Weigh the material as per mix design and convert it to corresponding volume. 2.1.7 Pour the concreting as per pouring pattern layer by layer. 2.1.8 At the end check the slope of PCC.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
3. Foundation Salient Features: 3.1 (a) Salient Features:
3.1.1 Concrete Quantity (for 1 Node.) 3.1.2 Time required (for 1 no.) 3.1.3 Peak hour production (for 1 no.) 3.1.4 Grade of concrete 3.1.5 Maximum size of concrete 3.1.6 Mix Proportion 3.1.7 Water cement 3.1.8 Production of concreting 3.1.9 Method of concreting
: : : : : : : : :
48.6 m3 06 Hr. 4 m3 M 25 20 mm 1:1.91:3.31 0.5 using concrete mixer conventional manually by wheel barrow.
3.1 (b) Sequence: 3.1.1 Clean the surface if any mud or dust is present there. 3.1.2 Mark out center line of footing and center of individual footing. 3.1.3 Mark layout of footing. 3.1.4 Cut and bent the reinforcement steel as per bar bending schedule. 3.1.5 Shift the reinforcement near the footing. 3.1.6 Lay the bottom reinforcement and fix the reinforcement steel as per drawing. 3.1.7 Fix temporary support for fixing of vertical reinforcement. 3.1.8 Fix spacer bars for maintaining the distances. 3.1.9 Check the spacing of bars as per drawing. 3.1.10 Fix shuttering Plates as per the size of footing. 3.1.11 Align and Fix temporary support to shuttering.. 3.1.12 checks the slope of vertical reinforcement steel. 3.1.13 Clean the foundation areas by Air Jet or Water jet . 3.1.14 Marks the required level and slope before concreting. 3.1.15 Prepare the mix design well in advance. 3.1.16 Stock the raw material for concreting like aggregate, sand, water and cement as per plan near the mixer. 3.1.17 Place the mixer as per plan with necessary chutes. 3.1.18 Prepare walkway arrangement for carrying and pouring the concrete. 3.1.19 Weigh the material as per mix design and convert it to corresponding volume.
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3.1.20 Pour the concreting as per pouring pattern layer by layer ensuring proper compaction. 3.1.21 At the end check the proper slope and make smooth finishing of the surface. 3.1.22 makes the proper curing arrangements.
Fig: Foundation Concreting
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
4. Pond Wall 4.1 Salient Features:
4.1.1 Concrete Quantity (for 1 Node)
:
18.269 m3
4.1.2 Time required
:
04 Hr.
4.1.3 Peak hour production
:
05 m3
4.1.4 Grade of concrete
:
M 25
4.1.5 Maximum size of concrete
:
20 mm
4.1.6 Mix Proportion
:
1:1.296:2.864
4.1.7 Water cement
:
0.5
4.1.8 Production of concreting
:
Single pours using conventional concrete mixer.
4.1.9 Method of concreting
:
manually by wheel barrow.
4.2 Sequence:
4.2.1 Mark out center line of wall. 4.2.2 Cut and bent the reinforcement steel as per bar bending schedule. 4.2.3 Fix scaffolding as per drawing and Fabricate the shuttering plates as per drawing. 4.2.4 Shift the reinforcement near the wall. 4.2.5 Fix the reinforcement steel as per drawing. 4.2.6 Fix temporary support for vertical reinforcement. 4.2.7 Fix spacer bars for maintaining the Thickness. 4.2.8 Check the spacing of bars as per drawing. 4.2.9 Fix shuttering plates as per the size of wall. 4.2.10 Fix vertical and horizontal water stopper in Construction and expansion Joints. 4.2.11. Align the shuttering plates as per slope, radius and level. 4.2.12.Fix the temporary support to shuttering plates 4.2.13 Clean the construction joint. 4.2.14 Mark the required level and slope before concreting. Nicmar Hyderabad.
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4.2.15 Prepare the mix design well in advance. 4.2.16 Stock the raw material for concreting like aggregate, sand, water and cement as per plan near the mixer. 4.2.17 Place the mixer as per plan with concrete unloading tray. 4.2.18 Prepare walkway arrangement for carrying and pouring the concrete. 4.2.19 Weigh the material as per mix design and convert it to corresponding volume. 4.2.20 Pour the concreting as per pouring pattern layer by layer ensuring proper compaction. 4.2.21 At the end check the proper slope and make smooth finishing of the surface. 4.2.22 Make the proper curing arrangements.
Pond Wall Concreting
Nicmar Hyderabad.
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5. Raker Columns Concrete 5.1 Salient Features:
5.1.1 Concrete Quantity (for 2 No.)
:
9.985 m3
5.1.2 Time required
:
07 Hr.
5.1.3 Peak hour production
:
02 m3
5.1.4 Grade of concrete
:
M 40
5.1.5 Maximum size of concrete
:
20 mm
5.1.6 Mix Proportion
:
1:1.05:2.59
5.1.7 Water cement
:
0.5
5.1.8 Production of concreting
: Single pours using conventional concrete mixer.
5.1.9 Method of concreting
: manually by wheel barrow.
:
5.2 Sequence:
5.2.1 Mark out center line of Raker columns pair. 5.2.2 Cut and bent the reinforcement steel as per bar bending schedule. 5.2.3 Fabricate the shuttering plates well in advance and fix scaffolding as per drawing. 5.2.4 Shift the reinforcement near the Raker columns. 5.2.5 Fix the reinforcement steel as per drawing. 5.2.6 Align the reinforcement as per required radius and slope. 5.2.7 Fix temporary support for fixing of vertical reinforcement. 5.2.8 Check the spacing of bars as per drawing. 5.2.9 Fix shuttering plates as per the size of columns. 5.2.10 Make proper arrangement for support fixing in pond floor. 5.2.11 Mark the radius of saddle on which support has to be rest. 5.2.12 Align the shuttering as per radius and level. 5.2.13 Fix inclined and horizontal support for column shuttering sets. Nicmar Hyderabad.
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5.2.14 Clean the construction joint. 5.2.15 marks the required level before concreting. 5.2.16 Prepare the mix design well in advance. 5.2.17 Stock the raw material for concreting like aggregate, sand, water and cement as per plan Near the mixer. 5.2.18 Place the mixer as per plan with concrete unloading tray. 5.2.19 makes walkway arrangement for carrying and pouring the concrete. 5.2.20 Weigh the material as per mix design and convert it to corresponding volume. 5.2.21 Pour the concrete simultaneously in both columns layer by layer ensuring proper Compaction. 5.2.22 At the end check the proper slope and make smooth finishing of the surface. 5.2.23 Remove columns shuttering after 12 hr of pouring concrete without disturbing the inclined and horizontal support. 5.2.24 makes the proper curing arrangements.
Raker Columns Staging
Nicmar Hyderabad.
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Raker Columns Shuttering
Nicmar Hyderabad.
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Typical Elevation View of Raker Columns
Nicmar Hyderabad.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
6. Ring Beam 6.1 Salient Features: 6.1.1 Concrete Quantity (for 1 No.)
:
7.267 m3
6.1.2 Time required
:
08 Hr.
6.1.3 Peak hour production
:
1 m3
6.1.4 Grade of concrete
:
M 40
6.1.5 Maximum size of concrete
:
20 mm
6.1.6 Mix Proportion
:
1:1.05:2.59
6.1.7 Water cement
:
0.5
6.1.8 Method of concreting
:
By concrete pump.
6.2 Sequence: 6.2.1 Fabricate the shuttering and Fix the scaffolding as per drawing. 6.2.2 Make wooden Bottom shuttering.. 6.2.3 Fix the level pin, then ISMB section on the staging pipe and place ring beam wooden Bottom shuttering. 6.2.4 Align the bottom shuttering as per radius and level. 6.2.5 Fix GP sheet on the bottom to maintain the outer curvical shape of ring beam by putting the wooden angular pieces. 6.2.6 Fix the reinforcement steel as per drawing and provide temporary support to vertical bars. 6.2.7 Make the alignment of reinforcement which is protruding from ring beam. 6.2.8 Check the radius of reinforcement steel at the lift top level. 6.2.9 Fix the shuttering plates at inner and outer face. 6.2.10 Align the shuttering plates as per radius and level and fix temporary supports. 6.2.11 Maintain the thickness of ring beam by fixing through bolts one meter c/c. 6.2.12 Clean the construction joint. Nicmar Hyderabad.
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6.2.13 Marks the required level and slope before concreting. 6.2.14 Prepare the mix design well in advance. 6.2.15 Stock the raw material for concreting like aggregate, sand, water and cement as per plan near the mixer. 6.2.16 Place the mixer and concrete pump & pipe line as per plan with concrete unloading tray. 6.2.17 Make walkway arrangement for carrying and pouring the concrete. 6.2.18 Weigh the material as per mix design and convert it to corresponding volume. 6.2.19 Pour the concreting as per pouring pattern layer by layer ensuring proper compaction. 6.2.20 At the end check the proper slope and make smooth finishing of the surface. 6.2.21 Make the proper curing arrangements.
Nicmar Hyderabad.
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Summer Internship Report-2010.
Ring Beam concrete by Concrete Pump
Nicmar Hyderabad.
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Summer Internship Report-2010.
7. Shell By Conventional Method
7.1 Sequence: 1. Fabricate the shuttering plate, Shoulders and other accessories. 2. Fix the scaffolding with staging pipe joint pin and sufficient bracings as per drawing. 3. Fix walkway on staging. 4. Fix the reinforcement steel as per drawing. 5. Make alignment of reinforcement steel and provide temporary support to vertical bars. 6. Fix the main shutter, make up shutter and pan shutter at inner and outer face. 7. Fix the shoulders with the shuttering plates by J-bolts and through bolts. 8. Align the shuttering plates in required radius and level by rotating radius bolts and maintain thickness by through bolt. 9. Fix four number of anchor screw with bolt in inner face of main shutter for anchoring Jump form bracket as per Jump form drawing. 10. Clean the construction joint. 11. Marks the required level and slope before concreting. 12. Prepare the mix design well in advance. 13. Stock the raw material for concreting like aggregate, sand, water and cement as per plan near the mixer. 14. Weigh the material as per mix design and convert it to corresponding volume. 15. Pour the concreting as per pouring pattern layer by layer ensuring proper compaction. 16. At the end check the proper slope and make smooth finishing of the surface. 17. Make the proper curing arrangements.
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8. Shell by Berrium Jumpform Method
8.1 Sequence: 1. Fix the Jumpform brackets on inner faces of shell. 2. Assemble Jumpform rigs set at ground level. 3. Lift Jumpform rig set by TATA 320 crane. 4. Fix Jumpform rig in the bracket already fixed on inner face of shell. 5. Fix the ladder beam on the top of vertical Jumpform post. 6. Fix the outer hanging platform on ladder beam. 7. Place and fix the wooden planks on the all Jumpform platform. 8. Fix the safety nets at all inner and outer platforms of Jumpform, bottom and both side approach walkway on plumb staging. 9. Fix the vertical and meridian reinforcement with cover blocks as per drawing. 10. Align the reinforcement steel in desired radius as per drawing and provide temporary support to vertical bars. 11. Lift the main shutter, make up shutter and pan shutter along with shoulder by chain pulley blocks (0.5 MT capacities) and fix at inner and outer face. 12. Align the shuttering plates in required radius and level by rotating radius bolts and maintain thickness by through bolt. 13. Fix four number of anchor screw in inner face of main shutter as per drawing for anchoring Jumpform bracket. 14. Clean the construction joint. 15. Marks the required level and slope before concreting. 16. Prepare the mix design well in advance. 17. Stock the raw material for concreting like aggregate, sand, water and cement as per plan near the mixer. 18. Place the mixer and power winches as per plan 19. Make walkway arrangement for carrying concrete on plumb staging. 20. Weigh the material as per mix design and convert it to corresponding volume. 21. Lift the Concrete bucket by power winch at desired level and unload the bucket in the tray on the plumb staging platforms. 22. Pour the concreting as per pouring pattern layer by layer ensuring proper compaction. 23. At the end check the proper slope and make smooth finishing of the surface. 24. Make the proper curing arrangements by placing high Lift water Pumps. Nicmar Hyderabad.
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8.2 Sequences for Jumpform Lifting 1. Lift the shuttering after 12 hrs of casting. 2. Lift the Jumpform rig by 150 mm for releasing load on bottom brackets. 3. Remove bottom brackets and fix on top in next lift. 4. Lift Jumpform rig to next lift by contraction the both Jacks uniformly by power pack. 5. Lift guide channel to next lift by extension the jacks 6. Give load on next top brackets which is recently fixed.
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9. PRECAST BEAM 9.1 Sequence: 1.
Prepare bar bending schedule as per drawing.
2.
Cut and bent steel as per bar bending schedule
3.
Fix the reinforcement steel cages as per drawing.
4.
Fabricate the shuttering plate as per drawing and Fix the shuttering.
5.
Place the reinforcement steel cages in the shuttering pharma with cover.
6.
Prepare the mix design well in advance.
7.
Stock the raw material for concreting like aggregate, sand, water and cement as per plan the mixer.
8.
Place the mixer as per plan with necessary chutes and Tray.
9.
Prepare walkway arrangement for carrying and pouring the concrete.
10.
Weigh the material as per mix design and convert it to corresponding volume.
11.
Pour the concreting as per pouring pattern layer by layer ensuring proper compaction.
12.
Make smooth finishing of the surface.
13.
Mark identification marks immediately after casting.
14.
Make the proper curing arrangements.
15.
Plug lifting hole with cement mortar after erection.
near
Typical view of Precast beam shuttering
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Summer Internship Report-2010.
10. POND FLOOR RAFT 10.1 Sequence
1. Clean the surface if any dust or material is present on floor. 2. Prepare Bar bending schedule and fabricate Pond floor Side Shutter plate 3. Fix the reinforcement as per drawing and provide cover blocks. 4. Fix footing & column (internal) reinforcement at the location as per drawing . 5. Fix 150 mm water stopper at construction joint & 230 mm at expansion joints. 6. Fix the Bituminous joint filler board at expansion joints. 7. Follow the alternate check box pattern of casting. 8. Fix the shuttering on the sides of floor. 9. Marks the levels at the four corner of floor.. 10. Cleans the surface by Water jet or air jet. 11. Check the required level and slope before concreting. 12. Prepare the mix design well in advance. 13. Stock the raw material for concreting like aggregate, sand, water and cement as per plan near the mixer. 14. Place the mixer as per plan with necessary chutes and Tray. 15. Prepare walkway arrangement for carrying and pouring the concrete. 16. Weigh the material as per mix design and convert it to corresponding volume. 17. Pour the concreting as per pouring pattern layer by layer ensuring proper compaction. At the end check the proper slope and make smooth finishing of the surface. Make mortar bund for curing .
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Summer Internship Report-2010.
Typical View of Pond floor reinforcement
Nicmar Hyderabad.
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11. Internal Column:
11.1. Sequence: 1. Prepare bar bending schedule and fabricate the shuttering plates as per drawing. 2. Fix the scaffolding . 3. Cut and bent steel as per bar bending schedule 4. Fix the reinforcement as per drawing. 5. Fix the shuttering. 6. Make the alignment of Shuttering 7. Clean the construction joint. 8. Mark the required level of concreting. 9. Prepare the mix design well in advance. 10. Stock the raw material for concreting like aggregate, sand, water and cement as per plan the mixer.
near
11. Place the mixer as per plan with necessary chutes and tray. 12. Prepare walkway arrangement for carrying and pouring the concrete. 13. Weigh the material as per mix design and convert it to corresponding volume. 14. Pour the concreting as per pouring pattern layer by layer ensuring proper compaction. 15. At the end check the proper slope and make smooth finishing of the surface. 16. Prepare the proper curing arrangements.
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12. PVC film fill: Necessity/Purpose: PVC fill is made of Poly Vinyl Chloride sheets which play a vital role in the water cooling process by increasing the path of water droplet. 12.1 Sequence: 1. Place the gluing machine and modules pharmas as per plan. 2. Mix the cyclohexane and polyvinyl chloride (PVC) thoroughly in mixing drum by mixer.
mechanical
3. Pour the mixer of (cyclohexane and PVC) liquid in gluing machine tray. 4. Place one PVC sheet in gluing machine and start the machine. 5. Take out the PVC film from other side. 6. Place the sheet in pharma. 7. Place second sheet in gluing machine and take out from other side. 8. Place the 2nd sheet on 1st sheet in such a way that the flute should be cross each other. 9. Repeat the action from 4 to 8 to get the desired depth that is 0.300 m. 10. Place the full pharma in sun light to get dry. 11. Remove the film fill module from the pharma. 12. Stack the fill module near the errection location. 13. makes walkway arrangement on intermediate beam. 14. fixes the pulley on upper level beam 15. Lift the film module manually by pulley. 16. places the film module layer by layer as per drawing on the fill supported beam.
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13. Bituminous painting on concrete surfaces Necessity/Purpose: - Prevent the entry of moisture in to the concrete which may leads to the corrosion. 1. Clean the surface by wire brush or air blowing. 2. Apply the primer coat on the surface 3. Apply one coat of bituminous paint. 4. then apply second coat.
14. AC pipe Necessity/Purpose: AC pipe are act as Hot water Distribution system through which hot water can be easily distributed over a large area of cooling tower and sprinkled through nozzles on PVC fill media .
14.1 Sequence: 1. Place the drilling machine as per plan. 2. Mark the hole center on the AC pipe. 3. Place the pipe in drilling machine. 4. Drill the hole on the pipe as per drawing. 5. Stack the pipe near the erection location. 6. Prepare walkway arrangement on PVC fill. 7. Place the pipe in lines and joint the pipes by couplers on upper level cross beam. 8. Make alignment as per drawing. 9. Check line and levels. 10. Prepare cements mortar 1:4 for casting the saddle. 11. Plug the gap between the duct wall and embedded AC pipe. 12. cast the saddle on upper level cross beam to rest the AC pipe. 13. Make arrangement for curing. Nicmar Hyderabad.
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Summer Internship Report-2010.
Holes for AC pipes
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CHAPTER 4 CHIMNEY
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4.1 INDTRODUCTION A chimney is a structure for venting hot flue gases or smoke from a boiler, stove, furnace or fireplace to the outside atmosphere. Chimneys are typically vertical, or as near as possible to vertical, to ensure that the gases flow smoothly, drawing air into the combustion in what is known as the stack, or chimney, effect. The space inside a chimney is called a flue. Chimneys may be found in buildings, steam locomotives and ships. In the US, the term smokestack (colloquially, stack) is also used when referring to locomotive chimneys. The term funnel is generally used for ships' chimneys and sometimes to refer to locomotive chimneys. Chimneys are tall to increase their draw of air for combustion and to disperse pollutants in the flue gases over a greater area so as to reduce the pollutant concentrations in compliance with regulatory or other limits.
4.1.1 Features:
Nicmar Hyderabad.
1. Type of Chimney
: RCC High Multi Flue Chimney
2. Number of Chimney
: One
3. Height of Chimney
: 275 meters
4. Client
: Larsen & Turbo Ltd.
5. Employer
: M.P.Power Gen.Co.Ltd.
6. Contract value
: Rs.48, 88, 00, 000
7. Contractor
: M/S Gammon India Ltd
8. Date of LOA
: 9th Dec, 2009
9. Type of contract
: EPC
10. Completion period
: 22 Months
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4.1.2 SCOPE OF WORK
1. The scope of work covered in this specification in general, comprises the Design Construction & Commissioning of 275 M. High Twin Flue RCC Chimney required for 2 x500 TO 600 MW Shree Singaji T.P.P.
a. Preparation of design basis report, design and construction drawings and obtaining approval. b. All excavation works in all types of soils / rocks including dewatering as necessary. c. Construction of raft foundation. d. Backfilling around the foundation. e. RCC shell. f. Internal platforms with flue restraint bearing and top internal platform with support bearing & External platforms. g. Stainless steel flues of suitable height. h. Chimney cap. i.
Companion flange and brackets including inserts on the shell for the flue duct connection.
j.
Access, maintenance and clean out doors.
k.
Staircase, ladders and hand railings.
l.
Insulation material.
m. Platforms, inserts & miscellaneous bolts and anchors required for instrumentation of chimney. n. Lightning protection and grounding systems. o. All painting work including for aviation, p. Aviation night warning lights, lighting system inclusive of all accessories and cabling work from power supply point.
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4.2
Summer Internship Report-2010.
TECHNICAL SPECIFICATION.
Description
Value
Total Height of Chimney.
: 275 Mtr
RCC Wind shield (shell) enclosing Two flues, one for each Boiler. No. of Boilers.
: Two
Volume of Gas per Boiler.
: 1280 M3/Sec
Mass flow of Gas
: 4000 T/h
Density of gases.
: 0.85 Kg/M3
Excavation
: 16350 cum (Approx.)
PCC
: 190 cum (Approx.)
RCC For raft and Grade slab
: 8230.00 cum (Approx.)
For shell, corbels, enclosure wall
: 8600.00 cum (Approx.)
Reinforced Steel
: 1355.00 MT (Approx.)
Shuttering Quantity
: 40980.00 sqm (Approx.)
Bituminous painting
: 22100.00 sqm (Approx.)
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
4.3 METHOD OF CONSTRUCTION
4.3.1. EXCAVATION Procedure: a) b) c) d) e) f) g) h) i) j) k) l) m) n) o) p)
Take the block levels with Clients. Mark the outer line of excavation considering side slopes. Excavate the soil. Again take the block level with clients after meeting soft/hard Finalize the level by excavating the hard/soft rock upto the required level. Trenches shall be backfilled with the suitable material as per specification in layers not exceeding 750 mm loose depth. Each layer of fill shall be adequately consolidated throughout its full depth immediately after placement and prior to placement of additional layer. Source: Approved borrow Excavated soil shall be checked up for the suitability for reuse. If it is suitable then use in back filling. Laboratory test: Before starting of fill work in Laboratory to determine of Maximum Dry Density/Optimum Moisture Content relationship as per IS: 2720. Field test: Field density test shall be carried out as per IS: 2720 till the minimum 95% compaction achieved. Work will be carried out from 8:00 am to 8:00 pm & 8:00pm to 8:00am every day excluding Sundays. For access to pit, stock rock location and direction of the vehicle movement please refer Fig No: 4 Frequency of Field test: Areas of fill in excess of 1000 Sq. m.: 3 test per layer. Areas of fill in less than 1000 Sq. m.: 2 test per layer. Trenches for each 100 m or less: 1 test per layer.
Details of setting out RAMP SURVEY PILLARS
CENTRAL PILLAR
BOUNDARY OF CHIMNEY
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Summer Internship Report-2010.
Figure 1 Layout of Excavation
4.3.2. PCC BELOW CHIMNEY RAFT FOUNDATION a) 2.1 Sequence: b) Clean the surface. c) Check the required level and slope before concreting. d) Prepare the mix design well in advance. e) Stock the raw material for concreting like aggregate, sand, water and cement as per plan near the mixer. f)
Place the mixer as per plan with necessary chutes.
g) Prepare walkway arrangement for carrying and pouring the concrete. h) Weigh the material as per mix design and convert it to corresponding volume. i)
Pour the concrete uniformly and the thickness of the PCC can be checked by using 75 mm structural steel angle or any other material of 75mm.
j)
At the end check the proper slope and make smooth finishing the surface of PCC.
k) Prepare the proper curing arrangements.
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Summer Internship Report-2010.
4.3.3. Raft foundation
1. Sequence of Chimney Foundation activity
1. After completing the PCC, area on it are marked for the laying of bottom reinforcement of Raft Foundation. 2. Bottom steel are cutted and layed on PCC according to the Bar Bending Schedule submitted to the Clients. 3. Cover Blocks are provided to the bottom steel so that reinforcement should not touch the PCC. 4. Once laying of Bottom steel is completed temporary supporting arrangement i.e. scaffolding pipes will erected for supporting the vertical bars or chairs and the dowels coming out of at 5. 6. 7. 8.
intermediate and top levels. After that intermediate dowels are tied up with the vertical bars or chairs. After that top reinforcement will be tied up according to the drawing. Once the reinforcement is completed, we can proceed for shuttering. Before proceeding for shuttering, care should be taken that we are going to fix shuttering on the top layer of reinforcement steel. What about the gap between PCC and top layer if steel.
9. For that remaining portion, in the beginning only Mix of M-40 is layed and on that Shuttering Plates are erected with the help of H-frames. 10. Before the start of shuttering cover blocks will be tied up to the whole reinforcement with proper spacing so as to maintain the cover of 75mm throughout and the steel should not protrude out of the concrete under any circumstances. 11. Making shuttering plate 12mm thick ply & fixing (3” X 2”) runner, shuttering which shall be checked and approved by (Client) and then it shall be placed to the proper position with the help of supports. 12. Supports provided to the shuttering should be strong enough so that concrete should not flow out of it during concreting under any circumstances. 13. GI sheet shuttering is provided for shear key at bottom and top. 14. As the top surface will be exposed the one, to maintain proper cover of 75mm on the top surface also, scrap bars will be tied to top mesh vertically at intervals and 75mm from the face of the main bar is marked on it in the vertical direction. 15. Get the whole pour checked by the clients. 16. Care should be taken that fixing of formwork and reinforcement adequately secured in correct position, leaving sufficient access for vibrator. 17. After getting it checked from the clients, now segment is ready for concreting:
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1. The segment to be concreted is to be get cleaned before concreting. 2. Vibrator needles ,Transit Mixers or Batching Plant or any other PNM using for the concreting is to be checked well in advance not at the time of concreting whether it is properly working or not.
Fig: Showing the first layer of reinforcement
Fig: 1st Segment Before Concreting.
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Summer Internship Report-2010.
Fig: Showing completion of first pour and reinforcement of other pours
Fig: Showing the completion of 4 pours of raft foundation
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Summer Internship Report-2010.
4.3.4 SLIPFORM FABRICATION & ERECTION
4.3.4.1 INTRODUCTION
Slip form is a method of construction that requires custom built set forms for each project. Unlike jumpforming, slip forming usually proceeds 24 hours per day during the pouring stage of the project. Large diameter silos RCC chimney, square or irregular configuration or clusters of two or more silos are usually slip form silos.
In this method, a complete and unique form system is fabricated and built on site. The inside and outside wall forms are constructed of EN 8 MS plates shutter. These forms are held together and supported by a system of yokes and by the slipform deck. The deck is constructed of structural steel members, which are covered with wooden planks to provide an area to work off .Normally, the structural steel members consist of the roof support beams for the actual structure .Once the slip form is complete, these members are attached to or supported by the wall. They are left in place to support the roof.
This whole system of deck and wall forms is raised, or slipped as one integral unit by a series of either hydraulic jack. Each jack is centered between the wall forms and climbs on a steel jack rod that is left in place in the concrete wall. The jacks are attached to the yokes to tie the whole system together.
The entire slip forming operation is usually continuous from start to finish .The rate of slip will be dependent on several factors, including wall thickness ,complexity of structure ,weather ,quantity of embeds, and block outs to be placed in the walls. Most slips will average between 10” & 15” per hour. The initial “set time” for the concrete being poured in the walls, which reinforces the jack rods that support the structure, is another critical factor.
After slip is completed, or “topped –out”, the form system is still supported by the jacks and jack rods. The finished wall is then given a day or two to gain sufficient strength .When ready, the deck structural support system is attached to the walls to support the roof to be constructed later, and the forms, yokes, jacks, etc are removed. The balance of the work to be performed on the project can then proceed under normal construction methods and practices.
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SKETCH OF MODERN SLIP FORM EQUIPMENTS:
Sketch of Slip form arrangement.
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SLIPFORM ARRANGEMENT AT EL ( + ) 0 M LEVEL
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4.3.4.2 LIST OF SLIPFORM MATERIAL FOR 48 YOKE SYSTEM
Qty for 48 Yoke Nos.
28
Post for inside waler
48
29
Inside waler
96
Outside yoke leg normal
24
30
Support tube for inside waler
48
2
Outside yoke leg for main yoke
8
31
End piece for inside waler
192
3
Outside yoke leg normal with U
16
32
Clamp for waler
192
4
Inside yoke leg normal
40
33
Outside intermediate form support left
48
5
Inside yoke leg for main yoke
8
6
Yoke beam lower left
24
34
Outside intermediate form support right
48
7
Yoke beam lower right
24
35
Support tube for outside interned. form support
96
8
Yoke beam lower left for main yoke
24 36
Screw for form support
192
9
Yoke beam lower right for main yoke
24 37
Inside intermediate form support left
48
10
Yoke beam upper right
48 38
Inside intermediate form support right
48
11
Yoke beam upper left
48
12
Steering arm
8
39
Support tube for inside intermed. form support
96
13
Adjusting screw for wall thickness
125
40
Clamp for form panel
96
14
Top screw
55
41
Console for turn buckle
100
15
Special nut for top screw
55
42
Upper turn buckle
96
16
Guide for normal yoke
180
43
Lower turn buckle
96
17
Guide for main yoke
32
44
Lower catch with spring
96
18
Slide bar
35
45
Pusher with spring
192
19
Clamp for yoke
384
46
Upper catch with spring
96
20
Radius screw
55
47
Hydraulic piston jack
100
21
Form support
96
48
Drawing bar
192
22
Outside form panel
48
49
Piston screw
192
23
Inside form panel
48
50
Screw for drawing bar
192
24
Post for outside waler
48
51
Split pin dia.5mmX30mm
768
25
Outside waler
96
52
Protecting cover
96
26
Support tube for outside waler
48
53
Inside spindle L=850mm
27
End piece for outside waler
192
Sr No.
Description
1
Nicmar Hyderabad.
right
M24X2P
110
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54
Inside spindle left M24X2P L=850mm
110
55
Outside spindle L=950mm
right
M24X2P
110
56
Outside spindle L=950mm
left
M24X2P
57
Nut for spindle M24X2P right
58
Summer Internship Report-2010.
84
Outside guard railing
288
85
Inside guard railing
240
86
Spacing sleeve
144
87
Taper tube 32 mm Dia
100
200
88
Taper tube 25 mm Dia
0
Nut for spindle M24X2P left
200
89
Console handle LH
200
59
Special nut for spindle M24X2P right
200
90
Console handle RH
200
60
Special nut for spindle M24X2P left
200
91
Elephant hose 200 mm dia, 2 mtr long
48
61
Beam for bracing of main yoke
16 92
Starnut
400
62
Stretching screw
16 93
Cleat for form panel A Top
120
63
Protecting hose flexible dia.35mm L=800mm
384
94
Cleat for form panel B Bottom
120
64
Screw for catch
192
95
Reinforcement clamp
100
65
Split pin dia.2mmX25mm
384
96
Pulley 250mm dia, 20mm rope, Guide
16
66
Hanging frame for pump unit
2
67
Counter flange for 6 ton jack
200
97
Pulley 350mm dia, 16mm rope, Concrete Bucket
8
68
Wing beam type A
4
98
Pulley 350mm dia,13mm rope, Pass / Mat Hoists
9
69
Frame work beam type A
4 99
Cover plate for pulley
66
70
Wing beam type B
4 100
Bearing 6210Z for pulleys
66
71
Frame work beam type B
4
72
Centre ring
1
101
Pin MS, 250mm long 50mm dia for pulley
33
73
Suspension clamp
8
102
Jack rod 32mm dia, 10 feet or 3 mtr long
74
Washer
16
75
Spider beam left
40
103
Jack rod 25mm dia, 10 feet or 3 mtr long
76
Spider beam right
40
104
Stud 3/4" BSW, 50mm long for 32mm jack rod
2000
77
Distance bar
48
78
Inside console for working deck
48
105
Stud 5/8" BSW, 45mm long for 25mm jack rod
0
79
Outside console for working deck
48
106
Shoe for 32 dia taper tube
100
80
Inside hanging scaffold
48
107
Shoe for 25 dia taper tube
0
81
Outside hanging scaffold
48 108
Slipform Power Pack SSP0110
2 Nos.
82
Upper outside console for normal yoke
40
83
Upper outside console for main yoke
8+8
Nicmar Hyderabad.
110
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4.3.4.3 PROCEDURE FOR ERECTION OF SLIPFORM 1. All The materials shall be collected, checked and stocked before start of erection as per list. Sr. No Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Yoke Leg (Outer) Yoke Leg (Inner) Yoke Beam & Shell Thickness screw Outside Hanging Platform Inside Hanging Platform Waler Assembly Waler post Intermediate Form Support Working Platform (Normal Post ) For Wing Beams Working Platform (Normal Post ) For Spider Beams Sleeve Pipe ,Shoe Pipe ,Jack Rod& Radius screw Reinforcement Guide Clamp & Cover Block Hopper & Chute Assembly for concreting Turn buckle & mason Jullah Details of Shuttering Plate. Details of Steering Arm. Hydraulic pressure pipe Connections Through 6T & 3T Jacks Hydraulic pressure pipe Connections Through Piston Jacks
2. From centre point as a reference periphery of shell will divide in to 48 equal parts each at angle 8. 3. Layout of staging shall be drawn on concrete surface of foundation. 4. According to layout staging shall be fixed, center staging should be strong as heavy load of mainframe will come over it. 5. Assembling of main center truss, ring beam and wing beam shall be carried out at ground level. 6. Before erection all required equipments and materials (like D-Shackle, sling, P.P.Rope) shall be kept ready. 7. Erection of mainframe shall be carried out by crane of suitable capacity to lift main beam at 12.75 radius. 8. Main truss with wing beam shall be placed at predetermined center and level as per site requirement. 9. Spider beam shall be connected into the ring beam channel, provided for fixing spider beam. Nicmar Hyderabad.
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10. After completion of erection work wing beam with central truss and spider beams, the bottom level of all the wing beams and spider beams shall be maintained constantly. 11. Check the centre of chimney with the center of center frame and adjust the same if frame is not in position. 12. Check all the connections for the proper tightness and location. 13. Erect the outer yoke leg with the help of guide angle. 14. Erect the inner Yokel leg ,Distance bar and continue erection of yoke beam, Internal & External platform frame with hand railing ,fixing of inner and outer shuttering plates, fixing of Waler support ,Waler ,fixing of Intermediate form support ,fixing of piston jacks, inside the console ,fixing of top platform frame with hand railing ,fixing of Right and Left hand horizontal Turnbuckle both side inside and outside with console and intermediate Waler support ,fixing of diagonal turnbuckle with Wing Beam and outer Yoke ,fixing of steering arm in Wing beam between Yoke legs shall be carried out. 15. Fix Shell Thickness Screw with Inner and outer yoke leg and radius Screw with inner Yoke Leg, Wing Beam & Spider Beam. 16. Fix the planks of 50 mm thickness over Wing beam, Spider beam, Inner and outer Hanging Platform and outer top platform. 17. Alignment of Yoke legs with Shuttering shall be carried out by keeping
„G‟-value= Thickness of shell × No. of Yokes. 1000 The „G‟-value shall be measured between top Yoke leg and Wing Beam.
Beam/Spider
18. Keep all the Yoke legs in position with shuttering by adjusting the radius screw, which has provided for the adjustment radius at different elevations. 19. Fix the Hydraulic Pressure pipe with piston jack both inside & outside continuously . 20. Both ends of the hydraulic pressure hosepipes shall be connected to power pack . 21. Fix the batten of size 2”×3”×4” with the inner Yoke leg at the location 22. Fix the monometer tubes on each battens provided in inner Yoke leg by keeping the constant distance between the lower yoke beam and draw a line on the battens. 23. Fix all the jack rod shoes at the locations marked on starter of shell. Fixing of reinforcement guide clamp on wing beam /spider beams and cover blocks with shuttering plates. 24. Fix the jack rods with jacks and sleeve pipe ,please ensure ,the gap between the sleeve pipe and shoe pipe shall be tightly closed be means of cello tape/shuttering tape to restrict the flow of concrete /grout in between the shoe pipe and sleeve pipe which leads to grouting of jack rod inside the shoe . 25. Fix pressure hosepipes with jacks and power pack 26. Check all the joints /Nipples of hydraulic hose pressure pipe by operating power pack. Nicmar Hyderabad.
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FIRST STEP: 1. 2 Nos of wing beams with centre frame has been erected by tyre mounted crane of suitable capacity to lift the truss. 2. If the whole assembly of centre frame & wing beams have to erect in as step the crane capacity needed to be 13 T.
ERECTION PROCEDURE WITH THE HELP OF SKETCHES Ring beam
Wing beam Wing beam
Crane
Reinforcement bar
GL. Raft foundation Backfilled soil
SECOND STEP: 1. After the erection of 2 nos of Wing Beams with centre frame the other 6 parts of wing beams were erected one by one and properly connected to centre frame with an angle of 45 degree between them. ERECTION PROCEDURE SHOWN WITH THE HELP OF SKETCHES: Ring beam
Wing beam Wing beam
Crane
Reinforcement bar
GL.
Backfilled soil
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Spider beam Erection
Wing beam Ring beam
Crane
Reinforcement bar
GL. Raft foundation Backfilled soil
PROCEDURE SHOWN WITH THE HELP OF SKETCHES:
THIRD STEP:
1. After the erection of all 8 nos wing Beams and connecting it to centre frame with all care of dimension and adequate checking ,the spider beams are erected one by one and get connected with ring beam with an angle of 8 degree in between them.
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4.3.5 CONCRETING OF CHIMNEY SHELL USING SLIPFORM
4.3.5.1 INTRODUCTION
The Concreting of Chimney Shell includes Concreting, Formwork/Shuttering, Reinforcement, Slipform Operation, Curing, Finishing and all safety measures taken into consideration.
4.3.5.2 Sequence of Concreting After erection of wing beam, spider beam, central frame and all other peripherals associated with slipform assembly, the lifting operation can be started. At present the slipform is resting on the staging pipes with all parts in assembled manner. As the lifting operation starts the total weight of the assembly will be transferred to jack rods inserted in concrete . The other members of slipform such as the Wing Beam ,Center frame, Spider Beams ,Yoke Leg & Yoke Beams are designed in such a manner so that the load transfer and stress distribution must be in a uniform manner . All the hydraulic jacks are connected in series connection through Power pack, manifold,Tee & hydraulic pressure distribution hose. The piston jacks are also connected in series through power pack ,4 way direction control valve distribution and hydraulic pressure distribution hose. Upto 25m Truck Mounted Boom Placer will transfer the concrete in the tray kept on the slipform deck. From there concrete will be poured to the shell using trolleys through the funnels kixed around the periphery of the deck so as to avoid segregation of concrete. Concreting is done from one end simultaneously with one by one layer of 200mm. Depending on the initial setting time of concrete, slipform shall be lifted up to 100mm in 1 hour. Vibrating and leveling will be maintained. After 25m concreting will be done by concrete buckets which will be lifted with help of winches. Observe the levels of each Yoke leg and if levels are not matching then adjust the lifting of jacks with the help of bolt provided at the top of jacks. The above process shall be continued for lifting of slipform. Simultaneously operate all the screw like shell thickness screw, Radius screw and horizontal turnbuckle as per the reading given in slipform operation chart.
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4.3.5.3. Procedure For Extraction of Jack Rods Jack rods shall be extracted after concreting a height of 25m of shell, initially and at 65m, 105m, 155m, 200m and 245m. A free Board of 900mm shall be kept in shuttering by lifting the slipform as required without concreting. Staging shall be provided to support total slipform .The loads shall be taken be staging pipes provided below wing beam and spider beams. Remove the jacks by dismantling bolts provided for fixing jacks with lower yoke beam. If there are two jacks at a location then one can be dismantled first and jack rod shall be extracted. If there is only one jack below spider/Wing beams the after transferring total load of slipform on staging provided on shell for the purpose, jack rods shall be extracted. Fix the extraction jacks at the predetermined locations in bottom of yoke beam. Connect the extraction jacks as per the dia of jack rods with power pack and operate the jack to extract jack rods. In one operation 300mm jack rod will be extracted .Continue the operation till you extract the joint of jack rod above jack top level. Continue the above procedure for extracting total length of jack rod at each location. Location of extraction shall be followed by setting, alternate locations. Grout the holes left out at jack rods extracted location by cement mortar.
4.3.5.4 RESETTING OF SLIPFORM.
1. Fix the pipe shoe at the extracted locations of jack rods with sleeve pipe, jack rod and jacks. 2. Alignment of shuttering and slipform shall be readjusted as per the drawing. 3. Concrete pouring shall be started after adjustment /setting of slipform. 4. Operation process shall be followed for further height as per slipform program.
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4.3.5.5 PROCEDURE FOR SETTING SHIFT / TWIST.
1. Layout shall be drawn on floor by selecting any two wing beam opposite to each other. 2. Plumb shall be hanged at both the locations and initial reading shall be noted down and also with help of laser instrument 3. Observe the shift /twist at every one hour and note down the readings. 4. If the slipform is shifted to any one direction it shall be brought to original direction by controlling the lifting of jacks. 5. In extreme cases chain pulley block shall be used by raking reaction from inserts provided in shell for the purpose. 6. If the slipform is twisted to any one direction, it shall be brought to original position by operating diagonal turnbuckle provided in wing beams. 7. On extreme twist chain pulley blocks shall be used to control the twist of slipform.
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4.3.6 FLUE CAN FABRICATION 4.3.6.1 Method of Fabrication First of all raw structural steel received from APML will be stacked on a wooden battens in a proper manner. Then the plates will be straightened so that before bending they should be in a proper shape. Then the plates will be cut for the proper dimension as mentioned in the drawings Using the pug cutters, plates will be cut horizontally and vertically as per the angle mentioned in the drawing. Then the plates will be bend half round with the help of plate bending machine. Then the two halves will be welded together keeping a gap of 2mm. Weld size will be 6mm butt weld as mentioned in the drawing. The end of butt joints shall be welded so as to provide full throat thickness. This may be done by the use of extension pieces, cross-runs. Firstly the root run will be applied using filler material of ER-70-S-6 and after that back gauging will be carried out from inner surface. After back gauging Liquid Penetrant Inspection will be carried out and if any flaws appears will be rectified as per standard welding practice. Once the Liquid Penetrant Test is carried out and the gaps are located final filling run will be applied. After each run of weld, slag will be removed (Deslagging). Both cans will be mounted on rotator and cans will be welded automatically from the top. Again the above procedure should be repeated for the third can. Then the 75x75x8 angle top one having 120 holes of 22mmǾ and bottom having 18mmǾ shall be welded respectively and one angle of 75x75x8 shall be bend and welded to the assembly. After fabricating one canT1, two angles of 90x90x8 are welded diametrically opposite points below 1000mm from top and above 1000 mm from bottom so as to maintain the shape of can which can be removed later on. Similarly, fabrication of stainless plates of 6mm is to carried out.
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4.3.7 Tests to be carried out.
1. Liquid Penetration Inspection will be carried out after root run conforming 2. Magnetic Particle Test will be carried out for fabrication of Stainless Steel 3. Radiography may be done 10% if required. Nicmar Hyderabad.
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CHAPTER 5 QUALITY PLAN 1.0 SCOPE
1.1 General: Project Quality Plan is a systematic document serving as a basis for assuring quality execution of the project at each stage for full satisfaction of Client/ Employer ensuring timely completion of the project by avoiding any cost and time over runs. It aims at ensuring timely completion of the project by avoiding any cost and time over runs and ensuring quality construction at all stages of the project. The Project Quality Plan contains requirements of quality assurance programme for Complete Design, Detailed Engineering, Supply, Construction, Erection, Testing and Commissioning of 2Nos,Natural Draft Cooling Tower for 2x600MW, Shree Singaji Thermal Power Plant, Village Dongalia, Dist. KHANDAWA, MADHYA PRADESH. This Project Quality Plan is in conformance with requirements of Company‟s Corporate QAM, ISO9001-2000 and L&T Technical specification for Construction.
1.1.1. Project Profile: This Project includes Construction of Two no‟s of Natural Draft Cooling Tower for 2x600MW SINGHAJI THERMAL POWER PLANT KHANDAWA, MADHYA PRADESH.
Features: Type of Cooling Tower type Cooling Tower Number of Cooling Tower Height of Cooling Tower Client Employer Contract value Contractor Date of commencement Type of contract Completion period Nicmar Hyderabad.
: Natural Draft Counter Flow, Splash : Two (one for each unit) : 170M (shell height) : Larsen & Turbo Ltd. : M.P.Power Gen.Co.Ltd. : Rs.120, 89, 00,000.00 : M/S Gammon India Ltd : 9th Dec, 2009 : Lump Sum contract. : 22 and 26 Months. Page 86
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1.1.2 Scope of Work: 2. The scope of work covered in this specification in general, comprises the Design Construction & Commissioning of 2 No of Natural Draft Counter Flow Cooling Tower required for 2 x500 TO 600 MW Shree Singaji T.P.P.
The scope of this work shall consist of, but not limited to, the design and construction of reinforced concrete double curvature hyperbolic shell, Raker columns, ring beams, cold water basin with partition walls, hot water pipeline, drain sumps, external drain chamber with associated pipe work, cold water channels with sluice gates and removable screens as specified elsewhere, hoists & monorails, primary and secondary hot water distribution troughs, fill support systems including columns & beams, drift eliminators (if required), testing of cold water basin for water tightness, external stairs, cage ladders, handling facilities at tower top with walkway platform and CW channel, platforms, walkways as specified or required for operation and maintenance, access doors, MS handrails, steel fittings, fixtures, inserts including fabrication, galvanizing and erection of associated steel work and other chemicals on the completed structures etc. all complete as per functional requirements and as per directions of Owner. The scope of work under this specification shall include providing thermal design, structural engineering design and drawings, all labour, supervision, materials, shuttering and scaffolding, construction equipments including tower cranes, hoists, batching plants etc. tools and plant, supply and transportation of all incidental items not shown or specified but reasonably implied for successful completion of the work. The nature of the work shall generally involve foundation,
excavation,
dewatering,
shoring
and
strutting,
backfilling
around
underground structures and plinth filling, sand filling, disposal of surplus soil outside plant boundary, concreting of grade as specified, formwork including automatic climb form, laser beam instruments, fabrication, galvanizing and erection of steel structures and inserts, finishing anchor bolts, RCC sump, laying and testing of hot water pipe line, water proofing, providing PVC water stops and joint filters, drainage and other ancillary items connected with cooling towers as approved. The surface protection that would include all inner face of hyperbolic shell, Raker column faces, inner faces of cold water basin, fill support structures, hot water distribution pipes & channels, cold water
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channels etc. This list is indicative and the scope shall also include the preparation and supply of all working drawings required for this work.
2.1.3 TECHNICAL FEATURES OF COOLING TOWER Description
Value
Tower Capacity
:
75000 Cum/Hr
Cooling Range
:
10°C
Diameter at sill Level
:
132M
Bulb Temperature
:
28°C
Relative Humidity
: 60%
Cooled water temperature
:
33oC
Hot water temperature
:
43oC
Drift Loss
:
0.005% (Maximum)
Excavation
: 49359 cum
PCC
: 3028X2 cum
RCC
: 28500X2cum
Reinforced Steel
: 3896x2 MT
Nozzles
: 11700x2 Nos
Shuttering Quantity
: 136605x2 Sqm
Bituminous painting
: 140510x2 Sqm
Design atmospheric Wet
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1.2 Structure of Quality Plan (QP): Project Quality Plan is structured into four parts conveying the Quality Policy, Quality Objectives and Governing Procedures for the execution of the above job in a clear, accurate and complete manner, applying sound engineering practices. First Section deals with the structure of QP, responsibility of preparation and upkeep of QP, and distribution list of QP. Second section covers the purpose & scope of QP. Third Section details of project are briefly furnished for ease of reference and understanding the scope of work. Fourth section Quality System elements as enshrined in QP are dealt with in conformity with ISO 9001-2000
1.3 Responsibility for execution and upkeep of QP: The Site In-charge in consultation with the Contract Management Section (CMS) concerned shall be responsible for execution of the project as per this QP. The Site In-charge in co-ordination with the QA Engineer In-charge shall be responsible for the preparation, distribution, and upkeep of this QP including revising by issuing approved revised pages/ amendments as necessary. All copies of QP shall be numbered and issued to a person as specified in the distribution list.
1.4 Distribution List: The master copy of this document will be with the Project Manager. The copy shall be distributed to the following personnel: Sr. No.
Copy Holder
Copy No.
1.
QA/QC Department L&T
1
2.
Civil Department L&T
2
3.
Q.A/QC Engineer, GIL
3
4.
CMS Section
4
5.
ISO Section, HO
5
6.
SMR
6
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2.0 NORMATIVE REFERENCE Following reference codes are to be referred which are as follows: Reference Code IS:11504 (Re-Affirmed 1992) IS:1786
Title Criteria For Structural Design of Reinforced Concrete Natural Draft Cooling Towers.
(Re-Affirmed 1990)
Specification For High Strength Deformed Steel Bars And Wires For Concrete Reinforcement.
IS:456-2000
Plain And Reinforced Concrete –Code of Practice.
IS:10262 Recommended Guidelines For Concrete Mix Designs. (Re-Affirmed 1990) IS:383-1997
Specifications For Coarse And Fine Aggregates From Natural Sources For Concrete.
IS:2386 Methods of Test For Aggregates For Concrete. (Re-Affirmed 1997) IS:1199 Methods of Sampling And Analysis of Concrete (Re-Affirmed 1999) IS:12269
Specification For 53 Grade Ordinary Portland Cement.
IS:269
Specification for 33 grade ordinary Portland cement
IS:8041
Specification for 43 grade ordinary Portland cement
IS:432
Specification for mild steel and medium tensile bars and hard drawn steel wire for concrete reinforcement.
IS:516
Methods of tests for strength of concrete.
IS:800
Code of practice for General Construction in steel.
IS:875
Code of practice for Design Loads for Buildings and Structures.
IS:650
Specification for standard sand for testing of cement.
IS:2210
Criteria for the design of RC shell structures and folded plates.
BS:4485
Specification for Water Cooling Towers (Part 1 to 4).
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The site utilizes the following document for Quality Management System based on ISO 90012000: 1. Quality Manual (Apex Manual of the Company) 2. Corporate Procedures 3. Work Procedures for NDCT works. 4. Record generated during the process. 5. Quality Control Plan (QCP)
3.0 TERMS & DEFINITIONS:
Abbreviations
Full Form
IMTE
Inspection, Measuring And Testing Equipments
ISO
International Organization For Standardization
LOA
Letter of Acceptance
MR
Management Representative
NCR
Non Conformity Report
SMR
Site Management Representative
QSP
Quality System Procedure
QMS
Quality Management Systems
QSS
Quality Survey Section
TMS
Technical Management Section
WSS
Work Survey Station
TPIA
Third Party Inspection Agency
REV
Revision
QCP
Quality Control Plan
QP
Quality Plan
RT
Radiography Testing
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4.0 QUALITY MANAGEMENT SYSTEM
Quality management system of the project shall start with the establishing of policy and objectives to direct and control an organization and it‟s inter related or interacting elements with regard to quality.
Gammon India Limited has implemented Quality System as per requirements of ISO 9001-2000, including 1. Quality Manual (QM) 2. Quality System procedures and other procedures 3. Quality Plan (QP) for this project. 4. Work Procedures 5. Safety Management Plan - Safety Manual 6. Procedure of Inspection and testing of incoming materials 7. Inspection and Testing Procedures and Inspection reports
Quality plan is prepared for the project as per quality requirement for ensuring conformance to lay down specifications.
4.1. General Requirements QMS of the project shall start with establishing the quality plan of the project at the initial stage. Quality Plan shall give process and its details and measurements criteria in the form of Process Parameters. Once the job is awarded planning activity for the job starts. This is done by establishing the Quality Plan, construction methodology and ITP‟s of the project. This gives resource requirements and its schedule. Various processes involved in the project and its construction are established and documented in the quality plan. Nicmar Hyderabad.
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4.2 Organization Chart
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4.3 Control of Documents All the processes should be carried out strictly as per approved procedures and specifications. The following documents are applicable for this procedure. Document
Controlled By
Contract Agreements
Planning Engineer
Drawings
Planning Engineer
Relevant Codes And Standards
Quality Control Engineer
Quality Manual
SMR/QA Engineer
Quality Plan With Method Statement And Testing of Incoming Materials
SMR/QA Engineer
QSP For Job
SMR/QA Engineer
Relevant person keeps the master copy of above documents and copies of above are issued to the users and entered in issue register. Each controlled document bears a copy number. Some documents if need to corrected or changed, concern person can change it under an approval of Project Manager. If some revision will take place in control document, the Originator will call back the copy from the users and issue fresh copy. The old copy will be kept with master copyholder indicating it as obsolete document. The obsolete copies of the document are kept by person controlling it only for any contractual or legal issues. The details of this process are as per corporate procedure for Control of documents "QSP/MGR/03, copy of which is available with SMR.
4.4. Control of Records: Records generated during various processes are maintained properly. The records generated are maintained by QA/QC in charge. The indexing number given is as: GIL/KHA/NDCT/QP abbreviation of process /Type of document or record / serial number. • GIL/ SSTPP/NDCT/QP - Gives location of • GIL - As Contractor • SSTPP - Location Shree Singaji Thermal Power Plant. • NDCT - As the name of the project (NDCT). • QP – Quality Plan. The lists of records are made and retention period is mentioned on the same. Copyholder shall take action regarding disposal of these records on expiry of defect liability period or afterwards as per instruction of CMS and inform all concerned. Nicmar Hyderabad.
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He shall ensure that these records are properly indexed, stored and are retrievable when required. The details of this process are as per corporate procedure for Control of Record "QSP/MGR/04, copy of which is available with SMR.
5.0 MANAGEMENT RESPONSIBILITY
5.1 Management Commitment:
GIL management (HO & Site) shall: Be in constant contact with site & encourage site to complete the project as per Clients requirement Define the quality objectives, mission and establish QMS for Site. Conduct management reviews of the site once in three months. Ensure that the resources required for the completion of the project are available on time. Conduct audit for compliance of QMS and take feedback for continuous improvement.
5.2. Customer Focus: To adhere safety, quality as per tender, approved procedure, drawings, quality control plan and QP, and progress as per schedule.
5.3. Quality Policy: Mission Statement To develop, build and service physical infrastructure for better living, work Environment & transportation.
Vision To be the leader in innovative engineering and timely delivering of our quality Construction services upholding our tradition of being “Builders to the Nation.”
Quality Policy Gammon‟s quest for excellence is achieved by its innovative engineering and quality execution of contracts through continual improvement of technology by its high performance team that takes pride in being “Builders to the Nation”.
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5.4 Planning 5.4.1 Quality Objectives The QMS is to be implemented at site for achieving following quality objectives • Quality of works: To achieve the higher quality standard to the requirements and to reduce the nonconformance and thereby reworking.
Sr
CORPORATE LEVEL
SITE LEVEL
1.
The Company will seek to understand customer satisfaction level in the scale of 1 to 10 and will take steps to continuously improving the satisfaction level.
Improve customer satisfaction level by reducing number of complaints and improve satisfaction level based on feedback received from clients.
2.
The company will increase the revenue To achieve billing as targeted and by at least 10% every year in the areas achieve project completion as per of its core competency. schedule.
3.
The company will increase the ROCE by To achieve job profit as per Control 1% every year. Estimate.
4.
The company will improve the To maintain the plants in good working productivity of equipments by 10% conditions and reduce breakdown every year. percentage by 5%
5.
The company will reduce the accident frequency rate by 10% every year. Also maintain safe working environment with proper housekeeping.
No.
Nicmar Hyderabad.
To create safe working environment for individuals at the project and achieve reduction in time lost by maintaining proper housekeeping and general cleanliness.
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5.5 Responsibility, authority and Communication:
5.5.1 Responsibility and authority Project Manager shall define the responsibilities & authority of the site personnel. The responsibilities & authorities of the site personnel shall be as follows:
A) Project In charge:
Responsibility: To make the estimate, programme, work instruction and monitor the site as well as QA/QC activities and safety activities. To interact with client, outside agencies and HO. Monitoring men and resources required for site i.e. arranging for the staff, plant / machinery from the sources available at HO. Follow up for getting the various construction activities started. Monitoring the daily expenditures incurred at site. Chair the review meetings to sort out the problems in execution of the job. To check the accounting, finance consumption, progress report, stock statements and QA/QC records are prepared properly and sent in time. Attending the client‟s officials in their site inspection and in meetings.
B) Section-In charge: Responsibility: Monitor the site activities as per the programme and schedules made. Interaction with various parties, outside agencies etc. Liasioning with clients for necessary permissions and getting approval for various construction activities. Follow up for resources required for site as per requirement and equipment deployment. Follow up for getting the various construction activities started. Day to day co ordination with client for necessary clearances.
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C) Planning Engineer: Responsibility: (1)Planning: To make Control estimate, cash flow, and programming and review the program periodically. Monitoring the stock of materials Maintaining the drawing register Estimating the quantities required for the next week & next month and informing to the stores. Reconciliation of the materials like cement, steel, aggregates, sand, Bitumen paint, staging pipes, etc. Prepare daily / weekly / monthly progress report and submit to Client and H.O. Preparing work orders for sub contractors as per approved rates and checking of sub contractor bills. Making the arrangement of weekly review meetings with client (2) Billing: Planning Engineer shall make running account interim bills & escalation bills monthly. Reviewing the work done quantities with the quantities of R.A. bills Authority: In the absence of Project Manager, he shall have authority as delegated by Project Manager. D) Plant in charge: Responsibility: Smooth operation, running of the plant and machinery at site. Prepare monthly plant statement and send it to HO through Project Manager. Make the weekly schedule for day-to-day maintenance of all plant items and carry out the maintenance accordingly. Prepare a list of plant spares required for maintenance of plant and vehicles weekly. Do the statistical analysis of breakdowns. Authority: To define the duties & responsibilities of all staff of plant section To place requirements for plants, plant spares. To declare plants as surplus
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E) Store Keeper: Responsibility: Prepare stock statement of the materials required for the job and update its quarterly. Check weights /measurements of incoming materials. Carry out visual inspection, check quantity and specification of incoming material. Originating the records of materials received. Storing of materials as required / specified Authority: He has the authority to reject material, which is not satisfactory. To recommend / propose the material suppliers. To make petty purchases at site with the knowledge of Project Manager. F) Accounts Officer:
Responsibility: Record the transactions as soon as they take place make the summaries and sent to H.O through Project Manager. Design the forms and procedures for timely accounting with internal control. Prepare and send MFS statement to H.O duly signed by Project Manager. Statutory requirements viz. income tax, sale tax etc. Authority: Complete cash control of the site in consultation with Project Manager. To recommend cash payments to suppliers and site personnel G) Site Engineers: Responsibility: Ensuring the proper functioning of the sites Ensuring the understanding, implementation and maintenance of quality and safety systems at all levels. Performing the activities of construction function relating to contract Ensuring proper documentation and data control. Ensuring adherence to construction schedule and giving feedback to planning cell. Ensuring proper housekeeping at work site.
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H) Safety Engineer: Responsibility: Ensuring overall safety at site. Identifying potential hazardous operations and situations and prepare HAZOP analysis. Preparing comprehensive and detailed accident report whenever accidents occur. Understanding the site conditions at various stages of work from perspective of safety of personnel and machinery Evaluating the requirement of safety training programs and carrying out the safety training programs Evaluating the effectiveness of the safety-training program. Conduct safety induction training as and when the situation demands. I) Administration: Responsibility: Arranging facilities such as communication, transportation, accommodation etc. required at site. Hiring of plants for project as and when required and getting approval from Project Manager Allocating and maintaining accommodation facilities for personnel at site. Maintaining various personnel records Maintaining security arrangements for works camp, colony and equipment‟s. Liaison with local departments like transport, electrical, postal, telegraphs, labor, provident fund, etc. Complying with various statutory requirements applicable to the project. J) Quality Assurance & Quality Control Engineer: Responsibility: Maintaining list of Quality related records. Maintaining of record room Reviewing QSPs, work procedures, Quality Plan and Inspection and Test Plan. Conducting various tests as indicated in the Inspection and Test Plan. Attending day to day site QC activities. Involving in QA related activities at site before concreting, during concreting and after concreting. Organize quality audits and provide feedback to PM and HQ – QA/QC group.
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5.5.2 Site Management Representative (SMR) Responsibility: Maintain all documents related to ISO 9001:2000. Initiate the internal audit and conduct Site Management Review meeting and take corrective action to close all NCR‟s raised in the audit in consultation with Project Manager. Implement ISO system in the site. Ensure that all staff follows quality management system at site. Maintain list of all quality records maintained at site.
5.6 MANAGEMENT REVIEW 5.6.1 General Management review shall be done as per company procedure bearing no. QSP/MGR/01. Site management review meeting shall be conducted once in three months after the Internal Audit is over. SMR shall fix the date & time in advance in consultation with Site in Charge and inform to all Section In-charge. SMR is responsible for organizing the meeting. He will prepare the agenda of meeting and distributed to all the section in charges in advance.
5.6.2 Review Input The agenda as well as Review Input for the meeting shall be as below: Audit reports (ISO Audit/Client Audit/DNV Audit), Report of analysis of Nonconformities, customer complaints, equipment failure etc. Action plan for corrective and preventive action. Report of monitoring of corrective and preventive action plan implementation. Safety records. Wastage. Reports of statistical techniques as given in procedure QSP/MGR/07. Process parameters of various processes are monitored and Reported and improvement of process carried out. Achievement of project schedule.
5.6.3 Review Output Improvement of the effectiveness of the quality management system and its processes. Improvement of product/service related to customer requirements. Nicmar Hyderabad.
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SMR shall prepare the Minutes of Review Meeting (MOM) and shall distribute among all the members. SMR shall also send necessary part of the minutes of the meeting to the concerned person for taking action as per the MOM as required. The copy of the MOM and the report of monitoring of corrective and preventive action taken shall be sent to M.R at H.O. with a copy to concern CMS, which shall serve as input for the agenda for Management Review Meeting at H.O. Management review shall be done as per the company procedure bearing no. QSP/MGR/01
6.0. RESOURCE MANAGEMENT
6.1 Provision of Resources: To establish hygienic site office and accommodation for staff and workers, sufficient vehicles for transportation of staff and labors, first-aid center, welfare facilities and etc. at site.
6.2 Human Resources 6.2.1 General The skilled manpower and technical, non-technical as well as managerial staff deployed are selected based on their qualification, experience and competency. Masons, Vibrator operator, PVC water stopper and metal welders and personnel for jump-form shutter alignment etc. are selected and qualified based on their performance and as per the procedure.
6.2.2 Competence, awareness and training The training requirements of staff are to be identified by Project In charge. Project In charge arranges for on job training and routine training based on requirements given by an individual in the appraisal, client recommendation and job nature. Safety related training is imparted by Safety Engineer at site. For any other training requirement he informs to H.O. CMS and H.O. HRD & Training section.
6.3 Infrastructure: Project Manger prepares requirements for infrastructure while preparing the estimate for the job. Infrastructure requirements include provision of Site offices, Plants & equipment like crusher‟s concrete batching plants etc. Transportation and communication facility
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The above is provided during the mobilization of the site. Also during the progress of the project when necessity is felt for additional infrastructure same is justified and is approved by CMS on review. The site is provided with adequate transportation facility for commuting. The site is connected by V-sat for its communication by emails and for procurements through ERP system. Plant Maintenance: Site has established a workshop at site for maintenance of its plants. Plant In-charge establishes preventive maintenance schedule for all the major plants, which follow the manufacturer guidelines for the same. The plants are thus maintained routinely so as to ensure them in working condition and for ensuring the productivity. The productivity and breakdown details are monitored and process parameters of the Plant Maintenance process are reported during the Site Management Review meetings. Objective of plant maintenance is to reduce the down time and Repair / maintenance cost of equipment‟s. For this failure analysis is done and improvements are implemented.
6.4 Work Environment: A safe work environment is ensured at site by taking adequate measures like adequate access scaffolds and walkways, railing and PPE for all the staff and workmen as appropriate to nature of their works. Company‟s safety manual can be referred for safety policy and standard procedures to be followed with regards to safe working at site.
SAFETY, HEALTH & ENVIRONMENT MANAGEMENT: Prior to commencement of work the personnel including sub contractor attend a safety induction meeting. All personnel who are exposed to hazardous activities are provided with necessary personnel protective equipment‟s like helmets, safety belts, shoes, goggles etc. Personnel working in hazards area are trained for fire-fighting training. The relevant safety equipment‟s shall be made easily accessible to the personnel.
SAFETY, HEALTH & ENVIRONMENT POLICY We at Gammon are committed to provide a safe and healthy working environment for our employees by adopting a proactive approach, prior to commencement of any project. It is part of our work ethic to ensure that safety; health and environment safeguards are in place right from the inception to the execution stage. We accept the need for constant up gradation of safety and health standards commensurate with the rapid changing technology in construction.
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HSE – OBJECTIVES AND TARGETS Sr
Objectives
Targets
1.
Commitment to provide safe, healthy working environment to the employees.
Accident Prevention.
2.
Maintaining safe, health and environmental safeguards at our work sites.
Environment Preservation
3.
Continual improvement in health, safety and environment standards with rapid change in the technology.
Progress with safety.
No.
Program to implement HSE POLICY and achieve objectives and targets:
1. Conducting Tool box talks: Toolbox talks are conducted at critical activities like ROW preparation, main line welding, trenching, lowering, boring, HDD etc.
2. Giving Training to the employees: Training regarding operation and safety instructions, spill prevention and environment protection, activity hazards etc. are given to enhance the awareness of HSE.
3. Job Safety Analysis (JSA) / Job Hazard Analysis (JHA) : Execution staff in consultation with safety section makes the JSA or Hazard analysis of the work activities before activity is taken up. The execution staff takes care of routine preventive actions as briefed in JSA or JHA.
4. Auditing: Safety audits are conducted and reports being maintained. Ratings are given for safety performance of the month. From the findings of audit, steps to improve the situation can be taken. The findings of the Safety Audit are reported to H.O Safety In charge and also to Project In charge and in SMR meetings. Nicmar Hyderabad.
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5. Monitoring: It is done daily through work place inspections, recording conformances/nonconformances and issuing inter-office memorandum to rectify the safety related deficiency (SRD). Process parameters of safety are reported on monthly basis to HO.
7.0 PRODUCT REALIZATION
7.1 PLANNING OF PRODUCT REALIZATION
To establish and maintain procedure for planning and control of construction activities at site. This Section proposes the methods adopted by the project Manager that will enable him to Administrate and execute the Contract as per approved Quality Plan, ITP‟s and Job Work Procedure and to the entire satisfaction of the customers.
7.2 CUSTOMER-RELATED PROCESS
7.2.1 Determination of requirements related to the product Product conforming to I.S shall be determined as per contract and approval of the same shall be obtained from customer before use . 7.2.2 Review of requirements related to the product Product requirement as per contract and drawing shall be reviewed & its availability on time shall be ensured.
7.2.3 Customer Communication Customer (owner)'s representatives give their instructions to site personnel in the register or in the approved format. Customer‟s complaints, if any received at site shall be attended with reply and compliance is maintained in the register or as per approved format by giving the details related to action taken.
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7.3 DESIGN AND DEVELOPMENT Design and Development of the final product is in the scope of customer.
7.4 PURCHASING
7.4.1 Purchasing Process To streamline the site, Head Office purchases and defines the boundaries of site and Head Office purchase limit. Material purchasing at site is for consumables and small items. The objective of site purchase is to reduce the lead-time and get the material at the best price. User group will raise an indent for the material to be procured and the same is reviewed by planning section and Stores will check for the availability of the material at stock and then the Project- In charge will approve the indent for procurement. Stores/Purchase section at site will obtain the Quotations for the materials indented and the Purchase Officer/Store Keeper will generate comparison statement and proper approval shall be obtained on the comparative statement and then Purchase order shall be prepared.
Purchase Order shall contain the following details: Date / P.O. Number / Indent Reference / Quotation Reference Vendors Name and Address Details of the Materials to be procured with Quantity and Rate Sales Tax Registration Number (for both State and Central) or VAT Specification of the Materials with IS or any other standard requirements Packaging details / Delivery Details / Validity of the Purchase Order Insurance / Discount / any other tax details / Transportation details Signature of the Competent Authority Purchase of major materials and that of consumables etc are done by HO P&S based on the indent raised by the user at site and reviewed by planning section at site and approved by the Project In charge and CMS. Purchase process and relevant documents are as referred in purchase process chart. Vendors are to be registered and their ability to supply the product is examined and then approved. After receipt of material based on each purchase orders, vendor's performance is viewed and is rated for their performance. Successful vendors are listed in approved vendor list. This list is reviewed once in three months based on the nature of supply and the product.
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A) INSPECTION AND TESTING 7.4.2 Purchasing Information A Purchase order to be issued to supplier mentioning all relevant information of the required product such as name of the Product and Quantity with the relevant standards and specifications Against purchase order, material shall be received from supplier at site and the inspection shall be carried out as per approved Quality Assurance Plan (QAP) or Inspection and Testing Plan (ITP) on receipt of the material. 7.4.3 Verification of Purchased Product Store personnel receives the materials and is accepted based on fulfilling requirement of incoming materials inspection. Quality Control engineer inspects the same materials and conduct sampling and testing as per approved ITP or QAP. Receipt Inspection Items received from H.O. like Cement, Reinforcement steel, Admixture etc. should be accompanied by Manufacturer‟s Test Certificate. Items received from vendors at site should be inspected / tested by the QC Engineer and records shall be maintained. Rejected materials are to be returned to the vendor and details are entered in the register. The Inspection and Test Plan and method of testing for incoming materials is defined in the Quality Assurance Plan. a) In process Inspection and testing In process Inspection and testing shall be carried out as per test/Inspection Plan and test results shall be recorded. QC Engineer will be responsible for this activity. QA test plan for in process testing and receiving inspection is detailed in Quality Assurance Plan. List of processes for Inspection/testing is enclosed. b) Final Inspection and test Before asking the Engineer In-charge for joint inspection, thorough check shall be carried out by QC Engineer. Project In-charge will make request for inspection to Engineer In-charge.
B) INSPECTION AND TEST STATUS Inspection and Test Status of materials and processes shall be identified by tags, marking or by documenting the test results indicating the conformance of the material/ processes based on the inspection/test performed. Non-conforming materials/processes shall be clearly identified to avoid their unintended use till the non-conformity is removed. All records shall be maintained by the QA Engineer on completion and acceptance of an activity by Client. All the measuring test and inspection Equipment‟s shall bear a sticker signed by the site QA In-charge containing all details related to its identification & calibration. Periodic cross verification of Equipment shall be done by the site QA In-charge for its accuracy.
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7.5 PRODUCTION AND SERVICE PROVISION
7.5.1 Control of Production and Service Provision To establish, implement and maintain a procedure for control of production and service provision for all permanent and temporary works in the site. The same is carried out by approved methodology of the respective activity like excavation, concreting for raft foundation, etc.
7.5.2 Validation of Processes for Production and Service Provision Validation of process for product shall be done based on the QCP approved by client.
7.5.3 Identification and traceability Product identification and traceability shall be carried out for critical items. Paperboard shall be kept near the critical material, which posses expiry date and these shall be depleted in the “First in First Out” system. Identification boards shall be displayed near the reinforcement steel/ structural steel indicating the diameter/size/specification. All critical materials (other than coarse and fine aggregates) purchased shall be accompanied by Manufacturer‟s test certificates. Details of Product Batch no., Lot no., Location, Date of use etc. shall be maintained in product for all critical materials. Records shall be maintained by QA Engineer. For example for cement Batch number shall be traced out with manufacturer material test certificates and Week number shall be traced out from cement bag and related documents. For steel Lot number shall be traced from manufacturer test certificate and at site from tags which is tied to the Reinforcement and as well as it will be transferred into issue register and steel register book, so that the traceability of steel shall be ensured. Product like Precast items shall have the product identification and traceability.
7.5.4 Customer Property There is no supply of materials by customer. It is applicable for some embedment parts and the same shall be controlled in the following manner: The indent shall be reviewed and approved by site in charge and submitted to the customer. The store In-charge shall verify the quantity of the customer-supplied materials. Project In-charge shall ensure that the Manufacturer‟s test certificates are supplied by the customer with each lot of material. In addition, random sampling and independent testing of customer supplied-product shall be carried out. Non-conforming materials shall be returned to the customers and record maintained. Nicmar Hyderabad.
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7.5.5 Preservation of Product All the material received at stores is preserved at store. Material is accounted and entered in stores ledgers. The care is taken to store the material at appropriate place. They are traced appropriately with their identification of the material. The main product required for this job is as follows: a) Cement b) Aggregate (Coarse & Fine) c) Admixture d) Reinforcement e) PVC Water Stopper f) Bitumen Paint g) GI Ladders h) Structural Steel for ladders, lightening, Earthing etc. i) M.S.Pipes a) Cement Cement shall be stored in closed godown as per Indian standard practices (IS 4082) and the same cement shall be issued to site as per the requirement. The cement older than six months will be rejected from its use. b) Admixture Admixture shall be stored in Closed Godown and same shall be issued to site as per requirement.
c) Reinforcement Reinforcement should be stored diameter wise and stacked over the wooden sleepers or pedestals. Tags will be used to identify each diameter of reinforcement.
d) PVC Water Stopper PVC Water Stopper should be stored in open or closed godown as per size and should be covered. Material code shall be written over it and tags will be used to identify each. e) Bituminous paint Bitumen paint shall be stored in closed go down and shall be issued to site as per requirement.
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7.6 CONTROL OF MONITORING AND MEASURING DEVICES A list of all inspection, measuring and test Equipment‟s shall be maintained with the details of the Equipment Identification number, Calibration frequency, Date of Calibration, next due date of calibration, calibration agency (in-house or external lab). In-house calibration shall be carried out as per equipment manual. QA In-charge shall be responsible for the calibration of the equipment and maintenance of documents and records. List of Inspection, Measuring and Test Equipment‟s has been prepared and given in Annexure-4. All the inspection, measuring and test equipment shall bear sticker signed by the site QA In-charge containing the details related to its identification and calibration status. Periodic cross verification of Equipment‟s shall be done by site QA In-charge for its accuracy.
8.0 MEASUREMENT, ANALYSIS AND IMPROVEMENT: 8.1 GENERAL
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8.2 Monitoring and Measurement
8.2.1 Customer Satisfaction Customer‟s feedback shall be taken proactively once in every Three Months for various attributes of project execution. A customer satisfaction index shall be assessed and corrective action shall be taken to improve QMS‟s performance
8.2.2 Internal Audit Management Representative will send quarterly audit plan and SMR will prepare audit schedule for internal audit before scheduled date of internal audit which includes name of trained internal auditors, auditor, date & time, duration of audit & location. The same shall be distributed to all concerned. Internal Quality auditing shall be carried out at the interval of three months. As soon as audit is over, SMR shall ensure that NCR‟s are duly endorsed with proper corrective action and data by the auditor and are sent to MR at HO. These non-conformities are brought to the knowledge of Site In-charge who will conduct and chair the management review meetings after preparing necessary agenda for the same. During this meeting site In-charge shall discuss the reasons/causes of non-conformity with all Section In-charges and suggest corrective action. Corrective action plan shall be finalized with the staff for closure of non-conformity report. SMR shall maintain a register of non-conformities stating details of non-conformities and corrective action taken for closing non-conformity. The following audit records shall be maintained: a) b) c) d) e) f) g)
Auditor‟s note to MR. NCR Form Audit Plan Audit Schedule NCR Register Report of Site Management Review Meeting. Audit Report.
SSTPP NDCT shall be provided to access all the Quality documents maintained at site for any audit conducted by them.
8.2.3 Monitoring and Measurement of process Monitoring and Measurement criteria are decided for various processes at site, which are termed as "Process Parameters". These are listed for each major process and are as shown in various activity process plans. The results of the process measurements are assessed with those
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planned. If these are found to be not in line with the planed ones suitable corrective actions are taken.
8.2.4 Monitoring and Measurement of Product Monitoring and Measurement of product are done at project sites. Inspection and testing requirements are documented in Inspection and Test plan (ITP). The ITP gives characteristics to be tested, applicable codes, testing methods, acceptance criteria, variance allowed etc. The record of test result as evidence of conformity to the acceptance criteria is maintained. If any deviations in the results are noted then such products are segregated and they are not used. Also deviations if any from acceptance criteria are validated from clients and then on its acceptance only material are used.
8.3 CONTROL OF NON-CONFORMING PRODUCT a) The site ensures that the nonconforming products are not used in the works and are identified and are segregated. b) The non-conformity in the product shall be noted at the time of inspection and testing by Quality Control Engineer. In case of non-conformity product he shall take appropriate action & reporting the same to Project Manager. c) The products, which received from clients, have identified as non-conformity by Quality Control Engineer shall be segregated and reported to clients through Project Manager. d) Product found nonconforming after receiving inspection and in-process inspections are identified and segregated till disposition is decided.
8.4
Analysis of Data
Data generated from the above processes is analyzed for initiating corrective and preventive action.
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IMPROVEMENT
8.5.1 Continual Improvement The site has targeted quality objectives based on company‟s Mission-Vision Quality Policy. Results obtained while analyzing the data shall be used in further improving the Quality Management System. Results of Internal audits Data shall be analyzed and actions shall be taken for continual improvement of the Quality Management System. Data from various sources shall be analyzed and corrective and preventive actions shall be planned.
8.5.2 Corrective Action
Corrective actions are initiated once the nonconformity is detected in view to eliminate its root cause and to prevent its reoccurrence. The Site In-charge shall initiate the corrective actions as and when nonconformity is encountered. Corrective actions include following actions: Nonconformity are reviewed Root cause are investigated Actions are evaluated and decided in view to avoid its re-occurrence Actions determined are implemented Records of such actions are recorded and are copied to CMS and MR Corrective actions so taken are reviewed for its appropriate Implementation.
8.5.3 Preventive Action The company has a system to initiate preventive actions for the events, which shall result in nonconformity at later stage. These events can be detected during the safety and quality audits. The Project Manager shall initiate the preventive actions as and when felt necessary. The actions taken during the preventive actions are as follows: Events of potential nonconformity are reviewed Actions needed are evaluated and decided in view to prevent its occurrence Actions determined are implemented Records of such actions are recorded and are copied to CMS & MR Nicmar Hyderabad.
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CHAPTER 6 CONSTRUCTION SITE ORGANIZATION AND MANAGEMENT
6.1 SITE LAYOUT DESIGN Main items of site layout design Building/structure under construction Main equipments Auxiliary plants, yards, workshops Stores and deposits Site management offices Sanitary/welfare rooms and buildings Temporary roads Electric power supply Water supply Storm-water drainage, dewatering Waste/contaminated water treatment, sewer.
6.1.1ON-SITE MAIN EQUIPMENTS Cranes (tower cranes) Manipulation area to be served/reached Location of other main equipments, cranes Height of beam Dimensions of effective lifting area served/reached Base frame – fixing (anchoring) (Pre-)Assembly of beam - spreading Assembly of crane by auto crane - climbing Other objects on the area to be served Elevators Proper location of feeding/picking area has great effect on performance Easy delivery of materials into the building should be provided in long period of Construction
6.1.2 AUXILIARY YARDS, PLANTS AND WORKSHOPS Rest of work is organized to central production plants. Less on-site processing can be performed at (supported by) special on-site plants. Potential auxiliary plants and yards Wood yard (formwork, shutter, timbering) Steel yard (reinforcement processing plant) Batching (concrete mixing) plant On-site prefabrication/pre-assembly yard Nicmar Hyderabad.
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Lime and mortar plant Yards and workshops functioning rather as stores Plumbers yard and workshop Electricians workshop HVAC assemblies store Tinsmith workshop.
6.1.3 WOOD YARD Its significance is vanishing due to more and more wide-spread use of formwork systems Irregular/unusual forms in architecture may recover (revitalize) its use Storage: On sleepers (e.g. on concrete beams) laid on spacers (ventilation/airing) Cutting: Power-saws located under shelter band-saw : circular-saw ( properly located for to cut any sizes of log or timber ) Assembly: in joining yard Infrastructure: electric power supply – buried cable water supply – fire plug (hydrant) road and surface gravel-typed dry/hard surface access for transportation fencing/enclosing needed
6.1.4STEEL YARD Central steel yard (reinforcement processing plant) as industrial supply is tending to be typical On-site steel yard Storage Transport straight rods and bars (length ~12 m) rods and bars cut and bended (confected) rolls of wires (e.g. for stirrups and for bonding) Storage by size and by mechanical characteristics (type, quality) Cutting and bending bending equipment(s), power tools linear Nicmar Hyderabad.
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6.1.5 BATCHING (CONCRETE MIXING) PLANT On-site batching (radial or tower-system) plants are typical rather at distant, („Greenfield”) Investments. At municipal (in-city) sites less frequently applied. Functional units Mixer, stand, dozing partition Cement-silos Radial deposit for fractions of aggregates (+ dragline excavator/feeder) Infrastructure Electric power supply (high consumption, separated supply) Water supply (high/intensive consumption) Road and surface Access around the aggregate-deposit must be provided Receiving cement transport – parking/loading bay Supply, reach/access/service of mixer – height of stand Hard surface (cover) under aggregate-deposit
6.1.6 STORES AND DEPOSITS Considerations closed (lockable) stores shelters : open deposits , special stores, Closed stores, mostly containers, sometimes store houses, buildings, or parts/sections of some existing on-site buildings Shelters Temporary structures (enclosed or fenced) Open deposits: hard surface (covered and/or enclosed) Special stores: special storage (safety, protection, hazard) regulations.
6.2 SITE OFFICES AND OTHER BUILDINGS 6.2.1 Temporary building structures
located close to the only port/gate of site (in a „neutral zone/corner”) container special ready-made (pre-assembled) building (separate section of) existing- or under-construction building
6.2.2Site management offices
single container office rooms, cabinets, documents‟ archives, office-technology rooms meeting rooms lavatory refreshment room, tea-kitchen, (drink/food automat) sub-contractors offices (as contracted)
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emergency- or „clean” room (first-aid room for case of accidents, wounds) Changing room, dining room, shelter (if any) sized for average workers‟ staff container shelter van special ready-made (pre-assembled) building refreshment room, buffet van (drink/food automat) Sanitary sized for maximum workers‟ staff lavatory/wash-basin as fixture in container or in building toilet wash-down toilet as fixture in container or in building
6.2.3 TEMPORARY ACCESS ROADS Even if no any structure was constructed as temporary road free access to all location on site must be provided during over-all time-span of accomplishment! Horizontal alignment single-lane roundabout access controlled only entrance and exit (gate) turning and man oeuvres of vehicles designed in accordance with the traffic (usually 12-14m)
6.2.4TEMPORARY ELECTRIC SUPPLY Demand w : engine/equipment (pile driver, batching plant, tower crane, etc.) w: power tool (power saw, poker vibrator, vibro-hammer, etc.) w: illumination, lighting (lamp, spotlight, reflector tower, sign, office, etc.)
6.2.5 TEMPORARY WATER SUPPLY Demand technology (concrete, plaster, paint, earthworks, etc.) Sanitary (drinking water, cleaning, washing, etc.) Fire protection (emergency water tank or water reservoir)
6.2.6 WASTE- AND STORM WATER DRAINAGE To be provided for technology wastes and cleaning ( must be collected and treated/transported ) sanitary ( if possible can be driven to public sewer system, other ways must be collected ) storm water and ground water ( driven to natural outlet )
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6.3 SITE MOBILISATION A very important component of site management is the organization. Depending upon the size and nature of the project, the organization would coordinate and carry out activities as determined. The success of a project very largely depends upon the commitment,involvement,attitude and understanding amongst the project team. A very close coordination needs to be maintained by the project manager with client/ owner, consultant, vendor/supplier, sub-contractor and local authorities. In view of uncertainties, the project manger & his team must rise to the occasion and innovate ways & means to come out of the crisis or a difficult situation as & when it develops.
6.3.1 SITE MOBILIZATION INVOLVES THE FOLLOWING 1. Enabling works: • Under works of this category, structures which would facilitate undertaking the actual project work are included in the master control network & planning. In a large project running into cores, enabling works itself will form a mini-project. Enabling works will include: (a) Fencing/boundary wall around the project, fixing security check post and gates. (b) Camp for engineers, supervisors & workmen (c) Store for materials (d) Construction plant & equipment: (1) Static plant such as concrete batching plant, pre-cast concrete element plant, hot mix plant etc. (2) Mobile plant such as dumper, bulldozers, transit mixer, concrete, compressor, trucks, bitumen sprayer, road roller etc. 2) Workshop: • For maintenance of plant and equipment(static & mobile), it is necessary to have a workshop which will undertake maintenance, repair, overhauling and major replacement of equipment. • The workshop should have a small machine shop attached with lathes, drilling machines,welding,sheet metal work and also battery charger, tyre repair etc. 3) Quality control laboratory: • For testing of material and building component, it is essential to set up a quality control laboratory at site. • This laboratory should test materials such as cement, sand,aggregate,bricks,concrete etc. • If any item needs to be tested for which facilities are not available at site, then such samples are sent to reputed laboratories/research institutions for testing. 4)Stores and stacking yards: • In the project site, open storage is necessary for maintaining the material in good condition. • Cement is usually supplied in bags which are stored at site in covered shed. Nicmar Hyderabad.
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•
If more than 10 bags are stacked, then the lower bags tend to set, making cement nonusable. 5) Services: •
The site camp is to be provided with services like electric supply, sewage disposal, communication, power, telephone ,&water supply • In order to carry out the enabling work which is required at the very initial stage of the project, a team is sent in advance to the site for building up all temporary structures, services required for enabling works. • On the other hand, if a project team that has been assigned with the main work is to first build up enabling works, a lot of time is lost in the project. In some international projects and some major projects within the country, structures are being adopted for the site camp which is of portable nature.
6.3.2 GOOD SITE MANAGEMENT TECHNIQUES 1) Well laid out site: • A tidy and workmanlike site is important because it helps the contractor to operate more efficiently and saves wasted time & resources. Secondly, it shows the client that the contractor takes pride in his work. 2) Site office for supervisor: • The site supervisor should be provided with an office where he can keep the drawings, documents, update the bar chart programme and prepare labour, plant and material returns as required by head office. • When the project manager or any authorised person as contractor visits the site, he should make sure that upto date drawings, client‟s instructions and other information is available 3) Training foreman: • The foreman is in the frontline of management and he will always perform better if he is made to understand that he is a member of team rather than an as a person to take orders. • It is worthwhile taking a little time to explain the reasons for requiring them to keep the site office tidy and submit time sheets regularly rather than simply saying “it has to be got done”. 4) Reducing waiting time: • Waiting time is far too common occurrence on many sites e.g. operators wait to be told as to what to do next, lorry drivers wait while the foreman goes off to the supplier for an urgent item and the concreting gang has to stop until the fitter comes out to repair the mixer. „Waiting time‟ is a polite way of describing wasted time and wasted time means wasted money. This can be eliminated provided a site management plan is prepared in advance. 5) Reducing movements: • Half of the man hours that is expended on a construction site are concerned with the movement and handling of materials. Much of this time could be saved, leading to greater productivity and lower costs, if the site layout has been planned from the start of job to minimize unnecessary movements.
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6.4 SITE MANAGER (EXECUTION) • • •
The first step in opening a site is to post a person to be the site in charge. Running a site is a full time job and this job must be given to person who is qualified and has got experience of work at sites. He/she should be a competent person with definite direction and strong inspiration, a natural leader with pleasing personality for leading a team of men successfully.
The following things are expected of a site manager: 1. KNOW THE CONTRACT:: He should thoroughly read the contract and should be knowing the contractual obligations and specifications so that the quality of performance is improved. 2. STUDY THE PLANS: He /she is expected to have the plan before him and ensure that the key men of the site team look at the plans as often as possible. When the target dates of approaching events & milestones stares, it will accelerate the speed of the whole team. 3. READ THE ERECTION MANUAL The erection manual must be read so that whatever is not clear should be discussed and clarification should be sought in advance. In this process, the manager must ensure that his team members become competent enough to attend to the erection job so that he can concentrate on other activities at the site 4. MOBILISATION OF RESOURCES: Apart from the items mentioned in the mobilisation checklist given by the planning manager, there are requirements of various registrations under relevant law for starting a new establishment employing people. Resource mobilisation shall be done as per the plan of head office in line with the work schedule, keeping the time, quality and economy in mind. If something planned by head office is unnecessary @ site, it is not necessary to do that. But, if something more is to be done, permission is necessary for budget allocation. 5. DIVIDE THE SITE INTO MANAGEABLE SECTIONS: If the site is unwieldy, divide it logically into units/sections/divisions and put an engineer/foreman in charge of each. Allocate the resources according to the needs. In allocation of resources, diversion should be made possible by ensuring least wastage & idleness.
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6. TRAIN AND DELEGATE RESPONSIBILITIES: The manager must train the supervisors to do the work well, guide them in every step until they become competent enough to take correct decisions at their level independently, and motivate them by delegating more responsibility in recognition of their competence in their assignments. All key men @ site must be trained to know the scope, capacity, their use, maneuverability and use of machines that are used in site. The manager must delegate part of his authority to subordinates so that they can exercise control over the resources to the extent necessary for carrying out their responsibilities efficiently. 7. SITE BUDGET: The head office consolidated budgets of various items of inputs and outputs for the whole site. It is necessary to break them section wise and delegate responsibility to section heads so that they learn to work independently & produce results. Measure & compare the performance every week. 8. REMOVE CONSTRAINTS: As a site manager, he /she should ensure that constraints are foreseen by way of advance planning of drawings, foundations, clearances, material indents, Working fronts, erection schemes etc so that they are removed in time. All constraints will cause delay and delay will cause financial loss to the organization. In construction work, “time lost is money lost” and hence the site manager is always under emergency. Narrating excuses will not help and what stands at the end of the month is figures of achievements. He should be a “creator” and should not wait for things to happen by themselves without human effort. 9. CLOSELY MONITOR ACTIVITIES: The site manager‟s task doesn‟t end by making resource allocation and holding of meetings. Instead of team leaders coming to manager for guidance, The manager should go to them for monitoring the performance, and where ever necessary, should guide them before any damage is done. No construction manager worth his name should say “Progress is poor because of failure of an engineer in charge of some activity”. As the boss of site, the manager should know the daily progress in every area of work, measure it and compare it with the planned programme and take effective steps for the same. 10. MANAGE TIME At the construction site, there is always pressure of work and lack of time. The manager should learn the art of time management in a better way.
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CHAPTER 7. PROJECT MANAGEMENT Project Definition and Scope What is a Project? “A project is a one-shot, time-limited, goal-directed, major undertaking, requiring the Commitment of varied skills and resources”.
A project is a temporary endeavor undertaken to create a unique product or service. A project is temporary in that there is a defined start (the decision to proceed) and a defined end (the achievement of the goals and objectives). Ongoing business or maintenance operations are not projects. Energy conservation projects and process improvement efforts that result in better business processes or more efficient operations can be defined as projects. Projects usually include constraints and risks regarding cost, schedule or performance outcome.
Project management is concerned with the overall planning and co-ordination of a project from conception to completion aimed at meeting the stated requirements and ensuring completion on time, within cost and to required quality standards.
Project management is normally reserved for focused, non-repetitive, time-limited activities with some degree of risk and that are beyond the usual scope of operational activities for which the organization is responsible.
7.1 IMPORTANCE OF PLANNING 1) project plan clearly defines project scope of work 2) It breaks down project objectives into clear ,identifiable,quantifible,attainable,and verifiable goals which are assigned to individual &responsibility centers for accomplishment 3) Project plan aids the management in performing its functions effectively & efficiently. 4) Project plan forms the basis of project operations &directions &shows how the project is to be run. 5) Project plan identifies critical activities, thus enabling the managing of project by exceptions. Nicmar Hyderabad.
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6) Project plan provides the basis for coordinating the efforts of clients, consultants, architects, designers, specialists, suppliers,contractors and the
quantity surveyors
&project staff.
7) Project plan provides the yard stick for measuring progress and evaluating resources performance.
7.2 Planning includes 1. Time planning 2. Resource planning 3. Planning control system
7.2 .1.Time planning 1.Project work breakdown 2.Drawing project networks 3.Project work scheduling 7.2.2. Resource planning 1.Planning construction manpower 2.Plannnijng construction materials 3.Selecting construction equipment 4.Planning construction costs 5.Planning construction budgets
7.2.3. Planning control system 1.Resource productivity control 2.Project cost control 3.Project time control
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7.3 Steps in Project Management The various steps in a project management are: Project Definition and Scope 1. Technical Design 2. Financing 3. Contracting 4. Implementation 5. Performance Monitoring
7.3.1. Technical Design For a project to be taken up for investment, its proponent must present a sound technical Feasibility study that identifies the following components: The proposed new technologies, process modifications, equipment replacements and other measures included in the project. Product/technology/material supply chain (e.g., locally available, imported, reliability of supply) Commercial viability of the complete package of measures (internal rate of return, net present value, cash flow, average payback). Any special technical complexities (installation, maintenance, repair), associated skills required. Preliminary designs, including schematics, for all major equipment needed, along with design requirements, manufacturer‟s name and contact details, and capital cost estimate. Organizational and management plan for implementation, including timetable, personnel requirements, staff training, project engineering, and other logistical issues.
7.3.2 Financing When considering a new project, it should be remembered that other departments in the organization would be competing for capital for their projects. However, it is also important to realize that energy efficiency is a major consideration in all types of projects, whether they are: Projects designed to improve energy efficiency Projects where energy efficiency is not the main objective, but still plays a vital role. The funding for project is often outside the control of the project manager. However, it is important that you understand the principles behind the provision of scarce funds. Nicmar Hyderabad.
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Project funds can be obtained from either internal or external sources. Internal sources include: Direct cash provision from company reserves From revenue budget (if payback is less than one year) New share capital Funding can become an issue when energy efficiency projects have previously been given a Lower priority than other projects. It is worth remembering that while the prioritization of Projects may not be under our control, the quality of the project submission is. External sources of funds include: Bank loans Leasing arrangement Payment by savings i.e. A deal arranged with equipment supplier Energy services contract Private finance initiative The availability of external funds depends on the nature of your organization. The finance charges on the money you borrow will have a bearing on the validity of your project. Before applying for money, discuss all the options for funding the project with your finance managers. It is reiterated that energy savings often add substantially to the viability of other non-energy projects.
7.3.3 Contracting Since a substantial portion of a project is typically executed through contracts, the proper Management of contracts is critical to the successful implementation of the project. In this context, the following should be done. The competence and capability of all the contractors must be ensured. One weak link can affect the timely performance of the contract. Proper discipline must be enforced among contractors and suppliers by insisting that they should develop realistic and detailed resource and time plans that are matching with the project plan. Penalties may be imposed for failure to meet contractual obligations. Likewise, incentives may be offered for good performance. Help should be extended to contractors and suppliers when they have genuine Problems. Project authorities must retain independence to off-load contracts (partially or wholly) to other parties where delays are anticipated.
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If the project is to implemented by an outside contractor, several types of contract may be used to undertake the installation and commissioning: Traditional Contract: All project specifications are provided to a contractor who Purchases and installs equipment at cost plus a mark-up or fixed price. Extended Technical Guarantee/Service: The contractor offers extended guarantees on the performance of selected equipment and / or service/maintenance agreements. Extended Financing Terms: The contractor provides the option of an extended lease or other financing vehicle in which the payment schedule can be based on the expected savings. Guaranteed Saving Performance Contract: All or part of savings is guaranteed by the contractor, and all or part of the costs of equipment and/or services is paid down out of savings as they are achieved. Shared Savings Performance Contract: The contractor provides the financing and is paid an agreed fraction of actual savings as they are achieved. This payment is used to pay down the debt costs of equipment and/or services.
7.3.4 Implementation The main problems faced by project manager during implementation are poor monitoring of progress, not handling risks and poor cost management.
a) Poor monitoring of progress: Project managers sometimes tend to spend most of their time in planning activity and surprisingly very less time in following up whether the implementation is following the plan. A proactive report generated by project planner software can really help the project manager to know whether the tasks are progressing as per the plan.
b) Not handling risks: Risks have an uncanny habit of appearing at the least expected time. In spite of the best efforts of a project manager they are bound to happen. Risks need immediate and focused attention. Delay in dealing with risks cause the problem to aggravate and has negative consequences for the project.
c) Poor cost management: A project manager's success is measured by the amount of cost optimization done for a project. Managers frequently do all the cost optimization during the planning stages but fail to follow through during the rest of the stages of the project. The cost graphs in the Project planner software can help a manager to get a update on project cost overflow. The cost variance (The difference between approved cost and the projected cost should be always in the minds of the project managers).
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7.3.5 Performance Monitoring Once the project is completed, performance review should be done periodically to compare actual performance with projected performance. Feedback on project is useful in several ways: a) It helps us to know how realistic were the assumptions underlying the project b) It provides a documented log of experience that is highly valuable in decision making in future projects c) It suggests corrective action to be taken in the light of actual performance d) It helps in uncovering judgmental biases e) It includes a desired caution among project sponsors.
Performance Indicators (PIs) are an effective way of communicating a project‟s benefits, usually as part of a performance measuring and reporting process. Performance Indicators are available for a wide range of industries and allow a measure of energy performance to be assigned to a process against which others can be judged. Depending on the nature of the project, savings are determined using engineering calculations, or through metering and monitoring, utility meter billing analysis, or computer simulations.
7.4 Four Basic Elements of Project Management A successful Project Manager must simultaneously manage the four basic elements of a project: resources, time, cost, and scope. Each element must be managed effectively. All these elements are interrelated and must be managed together if the project, and the project manager, is to be a success.
7.4.1. Managing Resources A successful Project Manager must effectively manage the resources assigned to the project. This includes the labor hours of the project team. It also includes managing labor subcontracts and vendors. Managing the people resources means having the right people, with the right skills and the proper tools, in the right quantity at the right time. However, managing project resources frequently involves more than people management. The project manager must also manage the equipment (cranes, trucks and other heavy equipment) used for the project and the material (pipe, insulation, computers, manuals) assigned to the project.
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7.4.2. Managing Time and Schedule Time management is a critical skill for any successful project manager. The most common cause of bloated project budgets is lack of schedule management. Fortunately there is a lot of software on the market today to help you manage your project schedule or timeline. Any project can be broken down into a number of tasks that have to be performed. To prepare the project schedule, the project manager has to figure out what the tasks are, how long they will take, what resources they require, and in what order they should be done.
7.4.3. Managing Costs Often a Project Manager is evaluated on his or her ability to complete a project within budget. The costs include estimated cost, actual cost and variability. Contingency cost takes into account influence of weather, suppliers and design allowances.
7.4.4. How the 80/20 Rule can help a project manager? The 80/20 Rule means that in anything a few (20 percent) are vital and many (80 percent) are trivial. Successful Project Managers know that 20 percent of the work (the first 10 percent and the last 10 percent) consumes 80 percent of your time and resources.
7.5 Project Management Life Cycle The process flow of Project management processes is shown in Figure 7.1. The various elements of project management life cycle are 1) Need identification 2) Initiation 3) Planning 4) Executing 5) Controlling 6) Closing out
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7.5.1 Need Identification The first step in the project development cycle is to identify components of the project. Projects may be identified both internally and externally: energy manager identifies a package of
Internal identification takes place when the
energy saving opportunities during the day-to-day
energy management activities, or from facility audits. External identification of energy savings can occur through systematic energy audits undertaken by a reputable energy auditor or energy service company. In screening projects, the following criteria should be used to rank-order project opportunities. Cost-effectiveness of energy savings of complete package of measures (Internal rate of return, net present value, cash flow, average payback) Sustainability of the savings over the life of the equipment. Ease of quantifying, monitoring, and verifying electricity and fuel savings. Availability of technology, and ease of adaptability of the technology to Indian conditions. Other environmental and social cost benefits (such as reduction in local pollutants,
7.5.2 Initiation Initiating is the basic processes that should be performed to get the project started. This starting point is critical because those who will deliver the project, those who will use the project, and those who will have a stake in the project need to reach an agreement on its initiation. Involving all stakeholders in the project phases generally improves the probability of satisfying customer requirements by shared ownership of the project by the stakeholders. The success of the project team depends upon starting with complete and accurate information, management support, and the authorization necessary to manage the project.
7.5.3 Planning The planning phase is considered the most important phase in project management. Project planning defines project activities that will be performed; the products that will be produced, and describes how these activities will be accomplished and managed. Project planning defines each major task, estimates the time, resources and cost required, and provides a framework for management review and control. Planning involves identifying and documenting scope, tasks, schedules, cost, risk, quality, and staffing needs.
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The result of the project planning, the project plan, will be an approved, comprehensive document that allows a project team to begin and complete the work necessary to achieve the project goals and objectives. The project plan will address how the project team will manage the project elements. It will provide a high level of confidence in the organization‟s ability to meet the scope, timing, cost, and quality requirements by addressing all aspects of the project.
7.5.4 Executing Once a project moves into the execution phase, the project team and all necessary resources to carry out the project should be in place and ready to perform project activities. The project plan is completed and base lined by this time as well. The project team and the project manager‟s focus now shifts from planning the project efforts to participating, observing, and analyzing the work being done. The execution phase is when the work activities of the project plan are executed, resulting in the completion of the project deliverables and achievement of the project objective(s). This phase brings together all of the project management disciplines, resulting in a product or service that will meet the project deliverable requirements and the customers need. During this phase, elements completed in the planning phase are implemented, time is expended, and money is spent. In short, it means coordinating and managing the project resources while executing the project plan, performing the planned project activities, and ensuring they are completed efficiently.
7.5.5 Controlling Project Control function that involves comparing actual performance with planned performance and taking corrective action to get the desired outcome when there are significant differences. By monitoring and measuring progress regularly, identifying variances from plan, and taking corrective action if required, project control ensures that project objectives are met.
7.5.6 Closing out Project closeout is performed after all defined project objectives have been met and the customer has formally accepted the project‟s deliverables and end product or, in some instances, when a project has been cancelled or terminated early. Although, project closeout is a routine process, it is an important one. By properly completing the project closeout, organizations can benefit from lessons learned and information compiled. The project closeout phase is comprised of contract closeout and administrative closure. Nicmar Hyderabad.
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The main roles are Project manager : 1. Figure head role( legal & social head) : The project manager, is the legal and social head of the project, is the single focal point of making decisions, ceremonial functions and symbolic duties. 2. Leader ship role (Performance motivator & experienced person): As a leader, the project manager directs the inter functional efforts through a complex web of relationships created in the project organization by building a performance-motivated organization a team of skilled and experienced people who collectively face the challenges posed by the people. 3. Liasioning role (Dealing with the outside agencies): The project manager maintains contacts outside the organization, deals with those activities which may involve correspondence and contact with the concerned government officials contract vendors professionals, and top persons of the construction industry. 4. Monitoring role (Monitoring the relevant information coming from outside agencies): The project manager focuses a planned approach for performing tasks, land implements of time, cost and quality planning and monitoring system for the project that highlights the commitment of the project team to provide assured results. 5. Disseminator’s role (Transfer information to higher & lower ends): The project manager transmits the relevant information received from external sources and internal systems to the concerned people in the work place. This information may be written or verbal, formal or informal. 6. Spokesmen's role: The project manager acts as the sole representative through whom all communications with the client or other external parties are conducted outside the project site.
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7. Entrepreneur's role (Identifies opportunities to promote to improvements): The project manager seeks and identifies opportunities to promote improvements and needed changes. 8. Disturbance handling role( The PM resolves conflicts ): The project manager maintains organizational harmony by resolving conflicts and diagnosing organizational behavior an time. He applies corrective action when the organization faces important unexpected disturbances. 9. Resource allocator role : The project manager takes responsibility for allocating/ altering the project resources and .makes any changes which are necessary to ensure the availability of adequate resources on time. This role also calls for developing and monitoring budgets and predicting future resource needs. 10. Negotiator’s role:
The project manager negotiates important conflicting issues and
business related matters, both inside and outside of the project environment. He represents the organization on major negotiations.
Project Mission The project manager aims to achieve its mission by:
Managing •
Time & progress
•
Cost & cash flow
•
Quality & performance
•
Organization behavior
With Organization resources by •
Planning resources
•
Scheduling resources
•
Organizing resources
•
Directing resources
•
Monitoring resources
•
Controlling resources
•
Quality constraints
•
Time constraints
•
Cost constraints
•
Environment constraints
Within
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Why Projects Fail? Failure to align project with organizational objectives Poor scope Unrealistic expectations Lack of executive sponsorship Lack of project management Inability to move beyond individual and personality conflicts Politics.
Project Success Factors
Project Mission: Initial clarity of goals and general direction.
Top Mgt Support: Willingness to provide necessary resources and authority / power for project success.
Project Schedule/Plans: Detailed specification of steps for project implementation.
Client consultation: Communication and consultation with and active listening to all affected parties.
Human resources: Recruitment, selection and training of necessary personnel for the project team.
Technical tasks: Ability of required technology and expertise to accomplish specific technical action steps.
Client acceptance: The act of „selling‟ the final project to the intended users.
Monitoring and feedback: Timely provision of comprehensive control information at each stage of implementation process.
Communication: Provision of an appropriate network and necessary data to all key actors in the project implementation.
Trouble shooting: Ability to handle crisis and deviations from the plan.
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CHAPTER 8. MAINTAINANCE OF SITE DOCUMENTS
List of documents to be maintain at construction project Latest approved construction programs/schedule & review records. Detailed layout Plan. Copy of Contract Documents. Bar charts/CPM charts. Works site Order Book. Works Diary. Measurement Book. Valid justification reports for delay if any. Vendor/sub-contractor evaluation. Availability of test certificates for all material. Training records. Following inspection and testing plans. All audit reports (client/internal-safety & quality). Non-conformance reports and its compliances. Site management review meeting records. Plant preventive maintenance records. Design review/validation/change records if any Wastage control measures & scrap handling. Accident/incident reporting. Analysis on audit results/concrete results/plant break-down. Control of non-conforming products (rejection of material/process). Valid indent & its approval/comparative statement/product verification Micro planning records. Document/drawing controls. Storage and preservation of materials/documents. Servicing/repairing documents-(workshops). Plant transfer or surplus plant declaration record. Review of quality plan/ABC analysis/control estimate. ERP entry/validation/ledger posting/status.
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CHAPTER 9. ADMINISTRATION/MANAGEMENT 9.1. Site Organization Chart
9.2. Responsibilities 9.2.1. Regional Manager Co-ordination, monitoring the project under region. Identify new projects and preparation of estimate and helping in winning this project. Periodic management, review meeting to ensure profitability, centralize wastage and optimum utilization of resource. Impart training to staff and develop culture and right attitude towards work at site. Create Gammon brand by constant interaction with prospective agency. Bring about innovation and periodic changes to improve the system.
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9.2.2. Project Manager To achieve projected cash margin. Resolving the issue w.r.t client, govt bodies and PRW/contractor at his level. Team building. Inventory of resources and plant. Housekeeping and save environment of work. MIS system implementation.
8.2.3. Section In-charge To create team plan and execute this work under section within time, budget and specification. To create safety awareness and impart daily training w.r.t work hazards and its precaution and maintaining housekeeping. To provide time to time information as per MIS requirement to I/C and planning in required format. To carry out periodic analysis of various expenses and wastage and to improve upon on each stage by 10%. Maintain and update all records at site as per system. To provide proper guidance to subordinate and sub-contractors.
8.2.4. Engineers To study and prepare salient features, Qty, schedule of work. To maintain day to day log book regarding work and measurement book. To provide time to time information as per MIS requirement to I/C and planning in required format. To implement various procedure and QA and safety plan at site. Maintain proper housekeeping and material reconciliation.
8.2.5. Store Keeper Proper material management at site includes vendor identification, timely collection of quotation, timely placement of orders and receiving material as per specifications and maintaining records thereof. Proper housekeeping of stores and site. Timely preparation of company‟s standard statements like ABC analysis, stock statement, wastage analysis and IRN‟s. Stage wise demobilization of the site by declaring the surplus material and dispatch of the same to the respective site in proper manner.
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CHAPTER 10. ACCOUNTING Accounting systems form an integral part of any successful business. Proper accounting not only helps the organization know its monitory worth, but also works as leverage to climb the ladders of growth. A construction company is like any other company and has many responsibilities towards their employees, customers, vendors, investors and government. They are bound to answer questions or queries that are raised time to time. Unless, they maintain a sound accounting procedure and proper reporting systems they cannot fulfill these requirements. The construction industry has some specific accounting requirements. Apart from routine receivable and payable accounts, they need systems for project estimating, job costing, overhead expenses, project schedules and contracts, project billing, vendor tracking and invoicing, customer management, etc. A typical construction accounting system includes accounts payable, job cost management, accounts receivable, payroll, detailed job budgets, time and material billing, general ledger, AIA billing, subcontract status, custom job reports, certified payroll, over and under billings, purchase orders, union reports, inventory, equipment tracking, work in progress, etc. In this computer age, there are many software packages available. Software specifically developed for the construction industry incorporates their specific requirements and are user-friendly and can be operated by the personnel with little computer knowledge. Apart from fulfilling statutory requirements such as balance sheets, profit and loss accounts for company and outside agencies like sales tax and customs departments, these packages generate innumerable reports which would be very helpful in company's decision making process. Most of this accounting software covers four major areas of construction industries. Accounting module covers, E.R.P, Tally , A/P, A/R, check writing, financial reports, inventory, job costs, payroll, project billing, cost estimating module covers assemblies, as well as unit costs, project management module includes change orders, contract writing, material takeoffs, punch lists, schedules. Business management module deals with appointments, customer relations, leads, property management, sales, etc.
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Summer Internship Report-2010.
CHAPTER 11. STORES MANAGEMENT 11.1 Definition of Material Management Materials management is that process of management which co-ordinates, supervises and executes the tasks associated with the flow of materials to, through and out of an organization in an integrated fashion.
11.2 AIM OF MATERIAL MANAGEMENT (Objective) To get 1. The Right quality 2. Right quantity of supplies 3. At the Right time 4. At the Right place 5. For the Right cost
11.3 Scope of Material Management
Procurement (including Planning & Scheduling) Inspection & QC Stores & Inventory Control Transportation & handling Distribution (logistics)
11.4 Objective of material management Primary • Right price • High turnover • Low procurement • & storage cost • Continuity of supply • Consistency in quality • Good supplier relations • Development of personnel • Good information system
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Secondary • Forecasting • Inter-departmental harmony • Product improvement • Standardization • Make or buy decision • New materials & products • Favorable reciprocal relationships
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Summer Internship Report-2010.
11.5 PURPOSE OF MATERIAL MANAGEMENT • • • • •
To gain economy in purchasing To satisfy the demand during period of replenishment To carry reserve stock to avoid stock out To stabilize fluctuations in consumption To provide reasonable level of client services
11.6 CLASSIFICATION OF MATERIALS 11.6.1 Why should we classify materials? We deal with hundreds of different types of inventory items. With so many items, complexity of managing the process increases. To manage these inventories effectively grouping is essential. Grouping together of materials of technical affinity is known as classification.
11.6.2 Classification can be based on various attributes:
By size By names By values By end use By product category
11.6.3 ABC Analysis Is a basic analytical management tool It enables management to place efforts where the results will be greatest. This technique is popularly known as Always Better Control. This technique tries to analyze the distribution of any characteristic by money value of importance in order to determine its priority.
11.6.4 Principles of ABC analysis: 1. The analysis does not depend upon the unit cost of the items but only on its annual consumption value. 2. It is independent of the importance of the item. 3. The limits of ABC analysis are not uniform but depend upon the size of the undertaking, its inventory as well as the number of items controlled.
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Summer Internship Report-2010.
Applications of this technique For:
Inventory Control Criticality of items Obsolete stock control Purchase orders Receipt of materials Inspection Store-keeping Verification of bills Basis of ABC analysis
This technique is based on Pareto’s Law ( an Italian Economist) which states the rule of 80:20.
Based on the principle that: - FEW ARE VITAL - MANY ARE TRIVIAL This aims to direct efforts where results are important. “Use of ABC analysis” Helps in rationalizing the number of orders and reduce the overall inventory even though overall purchase orders are the same, the average inventory can be reduced substantially. Steps for classifying the items into A,B,C categories. 1. List out all the items in the inventory. 2. Ascertain the unit cost of each of the items. 3. Ascertain the number of units issued in a year. Assumption: Issues and consumption are the same. 4. To obtain the annual consumption value multiply the unit cost of each item with the number of units issued in a year. 5. Sort the list of consumption value of each item in the descending order. 6. Starting at the top of the list compute the cumulative total of the rupee consumption value. 7. Compute for each item the cumulative percentages for the item count and cumulative annual value. This is based on cost criteria. It helps to exercise selective control when confronted with large number of items it rationalizes the number of orders, number of items & reduce the inventory. About 10 % of materials consume 70 % of resources About 20 % of materials consume 20 % of resources About 70 % of materials consume 10 % of resources Nicmar Hyderabad.
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Summer Internship Report-2010.
11.7 PURCHASING What is purchasing? : Purchasing is a service function Definition Purchasing implies the act of exchange of goods and services for money. OR Purchasing is the process of buying - learning a need , selecting a supplier , negotiating a price and fixing the terms of delivery and payment.
11.7.1 Basic objectives of Purchasing
1. To maintain continuity of supply to support construction schedules. 2. To ensure minimum investment in stores and materials inventory, consistent with supply and economy. 3. To avoid duplication of purchases and costly delays. 4. To maintain proper quality standards based on suitability criteria. 5. To procure materials at lowest possible cost, consistent with quality and service requirement. 6. To maintain company‟s competitive position in the market by controlling material costs.
11.7.2 Purchase Procedure 1. Purchase Requisition or Indent from user. 2. Verification of current stock levels by the Stores department. 3. Assessing exact procurement required with detailed specifications. 4. Enquiry / RFQ. 5. Evaluation of Bids received preparation of comparative statement. 6. Negotiations. 7. Placing of the Purchase Order.
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Summer Internship Report-2010.
11.7.3 Requisition/ indent – key information check list 1. Date & time 2. Material Description 3. Detailed specification, standards or make. 4. Quantity 5. Suggested supplier 6. Purpose 7. Approximate date when required 8. Originating department 9. Authorisation
11.7.4 Purchase Order - definition A purchase order is a buyer-generated document that authorizes a purchase transaction. It sets forth the descriptions, quantities, prices, discounts, payment terms, date of performance or shipment, other associated terms and conditions, and identifies a specific seller. When accepted by the seller, it becomes a contract binding on both parties. Also called order.
11.7.5 Purchase Order – key information check list 1. P.O. reference no. 2. Date 3. No. of copies 4. Quotation / Offer for supply ref. 5. Description of material 6. Detailed specification – detailed description of characteristics, blue print, drawing, market grades, brand names or trade names, commercial standards, preference characteristics. 7. Quantity required. 8. Delivery schedule. 9. Price and discounts + taxes and duties. 10. Packing Instructions. 11. Shipping instructions. 12. Place of delivery (Location where material required). 13. Detailed terms and conditions - vendor rating. 14. Payment terms. 15. Price variation / escalation or reduction. 16. Exit terms – order cancellation Nicmar Hyderabad.
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11.8 STORES FUNCTIONS To receive goods – raw materials, components, tools & equipments and other items and account for them. To provide adequate and proper storage and preservation of the goods in store. To meet the demands of the consuming departments. To minimize obsolescence, surplus and scrap. To highlight stock accumulation, discrepancies, abnormal consumption and effect control measures. To ensure good housekeeping
11.8.1 Design factors for good stores management Location – ideally should be as near to the point of consumption as possible so as to reduce handling and to have timely despatch. Layout – should ensure easy movement of materials. Ensure easy retrieval, ergonomically. Sufficient space (for men and material handling equipment) shelves, racks, pallets. Proper preservation – rain, light, heat, cold storage, air conditioning. Lighting – adequate lighting is essential Safety - training safety consciousness, safety appliances, Personal Protective Equipment (PPE) good house keeping keep stores equipment in good order, forklifts, cranes, trolleys, conveyors. fire fighting equipment toilets
11.8.2 Specific Functions of a Store. A. Receipt B. Stocking C. Issues
A) .RECEIPT SYSTEM Receipts into the organisation or store come from many sources: a. From outside suppliers b. From rejected stores c. From surplus stores d. From scrap generated e. From empties f. From stock transfer from other project sites Nicmar Hyderabad.
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Summer Internship Report-2010.
The Receipt system of a store starts much before the actual receipt of materials at the store. This requires proper planning in advance. The Purchase order indicating quantity and delivery date is the starting point. Records should be maintained in a chronological order to show expected daily receipts. So that the handling and storage can be planned in advance. This helps in planning labour contracts for uploading, stocking etc. and when to take delivery – demurrage. Suppliers send despatch note or advise note to the stores in advance – i.e. Date of despatch, carrier details, description, value etc. Document of transport department – LR/RR or consignment note Packaging slip detailing contents in the package. Insurance Actual physical receipts (delivery challan – a. Verification for quantity, shortages, damages, claims preference. b. Take open delivery with transporters get shortage or excess or damage endorsed. Provisional Goods Inward (PGI) – physically received, pending inspection note/report. Final goods inward note (FGI) INTERNAL RECEIPTS – transfer note/ return to stores, stock transfer (no sale), Debit/Credit note, Internal DC (delivery challan) . Where to integrate the quality inspection dept?
B) .STOCKING Sorting and storing issues when volumes are high, provide separate areas for:1) Stores awaiting inspection. 2) Stores which are QC inspected, passed and accepted for use. 3) Storage of rejected materials. ( FG not applicable to construction activity directly)
C) .ISSUES For consumption by internal departments as per order or indent. To works on returnable basis. To outside suppliers for processing or conversion. For stock transfer to other divisions or project sites.
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GIL, NDCT & Chimney Package for S.S.T.P.P, Khandwa, M.P
Summer Internship Report-2010.
11.9 STORES ACCOUNTING Any inventory item has both physical and financial characteristics. Whereas the physical characteristics (flow of goods) are factual and measurable, financial characteristics (flow of costs) are mainly subjective in nature. The financial characteristics associated with the flow of costs are usually emphasized in stores accounting and valuation.
WHY STORES ACCOUNTING? Stores accounting plays a very important role for the estimation of the cost of a product for pricing decisions. Material costing is very important in terms of the valuation of the cost of materials consumed by say, the production department during a given period of time as well as in terms of the estimation of the value of materials held in stock. In this context, two important aspects, viz., costing of the materials receipt and of materials issue, are considered in stores accounting.
1. Costing of the Receipt of Materials The factors that are to be included in building up the cost of the materials received are material price, freight charges, insurance, and taxes. Price usually refers to the price quoted and accepted in the purchase orders. Prices may often be stated in various ways, such as net prices, prices with discount terms, free on board (FOB) and cost insurance and freight (CIF). For costing purposes the actual cost incurred needs to be calculated by taking price quoted by supplier as the basis, subtracting the discounts and adding any other expenses not covered. 2. Costing of the Issues of Materials to Production There are several methods that are in use for costing the issues of materials to the production and other departments of an organization. First in first out (FIFO), last in first out (LIFO), average cost, standard cost, base stock method, market price at the time of issue, latest purchase price, and replacement or current cost methods are a few of the methods used for this purpose.
Material Costing : Is important for 1) Valuation of the cost of materials consumed, and 2) Estimating the value of materials held in stock. - at various stages
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Summer Internship Report-2010.
11.9.1 FLOW OF COSTS (or) Pricing material issues 1) ACTUAL COST METHOD. 2) FIFO – FIRST-IN-FIRST-OUT 3) LIFO – LAST-IN-FIRST-OUT 4) HIFO – HIGHEST-IN-FIRST-OUT 5) SIMPLE AVERAGE COST METHOD 6) WEIGHTED AVERAGE COST METHOD 7) PERIODIC AVERAGE COST METHOD 8) STANDARD COST METHOD 9) REPLACEMENT COST METHOD (MARKET PRICE METHOD) 10) NIFO – NEXT-IN-FIRST-OUT METHOD 11) BASE STOCK METHOD
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Summer Internship Report-2010.
CHAPTER 12 CONSTRUCTION SAFETY
Safety Officer Responsibilities COMMON RESPONSIBILITIES The following responsibilities apply to all ICS personnel: 1. Receive assignment, notification, reporting location, reporting time, and travel instructions from your home agency. 2. Upon arrival at the incident, check in at designated check-in locations. Check-in locations may be found at: Incident Command Post, Base or Camps, Staging Areas, Helibases, Division Supervisors (for direct line assignments). 3. Agency representatives from assisting or cooperating agencies report to Liaison Officer at 4. The Command Post after checking in. 5. All radio communications to Incident Communications Center will be addressed: "(Incident Name) Communications". 6. Use clear text and ICS terminology (no codes) in all radio transmissions. 7. Receive briefing from immediate supervisor. 8. Acquire work materials. 9. Organize, assign, and brief subordinates. 10. Complete forms and reports required of the assigned position and send material through supervisor to Documentation Unit. 11. Ensure continuity using in/out briefings. 12. Respond to demobilization orders.
13.
Brief subordinates regarding demobilization.
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Summer Internship Report-2010.
A N N E X U R E - I
HAZARD & RISK / CONSEQUENCE IDENIFICATION FOR A FEW ACTIVITIES IN CONSTRUCTION INDUSTRIES S.No 1.
2.
3.
Activity Excavation
Rock blasting
Reinforcement
Hazard (1) Dusts generation Exposed to dust, inhalation
Dust Ellergy, Asthama
(2) Caving in (burying in of person)
Injury, Death if a person goes under high debris / earth.
(1) Dust generation (exposure to dust inhalation.
Dust Ellergy, Asthama,
(2) Noise Generation (Exposure to high noise)
Deafening, Permanent loss of hearing.
(3) Hitting by materials
Injury / Death
Dusts / rusts / Paints / Oils generation, spreading causing eye injury (Contact with these materials)
Eye Injury
a) Cleaning of bars from grease, oil, paint, Dust inhalation rust, dust
b) Cutting, bending
c) Bending of reinforcement
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Consequences / Risk
Ellergy, Asthama
1) Flying of pieces, (Hitting)
Injury
2) Hammer not falling correctly on chisel
Injury
Hitting by wire or reinforcement
Injury to eye or body.
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S.N o
Activity
Hazard
Summer Internship Report-2010.
Consequences / Risk
Falling of bricks
Injury
b) Mixing of mortar
Dust generation (Inhalation)
Dust Ellergy, Asthama
c) Transport of mortar
Falling of mortar / container
Injury to leg.
5.
Curing with water spray
Water sprinkling back in eyes (Water splash in eyes)
Eye Injury
6.
Roofing
a) Handling shifting & lifting
Falling of sheets (Falls from height)
1) Injury
b) Roofing fixing – bolting, nailing
Tools falling / damaging hands etc… Contact with ACC sheet leads to skin disease.
Injury
Fabrication:
Falling of materials
Injury
Welding rays effecting eyes
Eye damage, cancers.
4.
Brick Works a) Brick transport (If manually
(ACC / GI / AC)
7.
2) Damage to sheets.
3) In case of ACC, Skin disease may be there.
a) Loading / Unloading of materials b) Welding
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Summer Internship Report-2010.
SPECIAL THANKS TO Sr No.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Name
Mr I. S. Mane Mr A. K. Dey Mr R. N. Rai Mr Parvindra Tyagi Mr Jayant Mankar Mr Vishal S. Kuwar Mr Vyankatesh Y Mr Milind Gaikwad Mr Swapnil Galave Mr Vaibhav A. Tungirwar Mr Vinay Cheerala Mr Shubham Gupta Mr Aniruddha Joshi Mr Rakesh Parihar Mr Rahul Ruikar Mr Gajanand Tiwari Mr Sourav Chatterjee Mr Arabinda Jena Mr Chodhury S Mr Soumya Ranjan Mr Niranjan Swain Ms Sunil Mahadik Mr Ajay Singh Mr Shailesh Rakhonde Mr Jagdish Sarda Ms Renu Upadhyay Mr Devidas Sapkale Mr Vishnu Priyan Mr Bhushan Sukhode Mr Prasad Mr Komal
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Designation
Regional Manager Project Manager DM-I DM-II AM-II AM-II AM-II (Safety officer) AM-II AM-II AM-II AM-II Engineer Engineer Engineer Engineer AM-II Exe. Accounts Asst. Accounts Store Officer Store Asst. Supervisor Safety Project In-charge Admin & Accounts AM-II AM-II Engineer Engineer Engineer Engineer Asst.Store Management Trainee
Project Site
Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Malwa NDCT & CHIMNEY Bhusaval NDCT & CHIMNEY Bhusaval NDCT & CHIMNEY Bhusaval NDCT & CHIMNEY Bhusaval NDCT & CHIMNEY Bhusaval NDCT & CHIMNEY Bhusaval NDCT & CHIMNEY Bhusaval NDCT & CHIMNEY Bhusaval NDCT & CHIMNEY Bhusaval NDCT & CHIMNEY NICMAR Pune
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NICMAR PGP-ACM, 23RD BATCH, HYDERABAD CAMPUS.
CONTACT US:
1. T.SHREEDHAR, H.NO 18-13-9-65-A2, BANDLAGUDA, PO; KESHAVA GIRI, HYDERABAD. ANDHRA PRADESH-500005. Email:
[email protected] a. :
[email protected] Tel
: +91 9052445996
2. AMOGH SHRIVASTAVA, IN FRONT OF CCF BUNGLOW, NEAR PTC GROUND, GOPALGUNJ, SAGAR, MADHYA PRADESH-470001. Email:
[email protected] :
[email protected] Tel : +91 9926352999
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