500 MW Turbine Erection Manual Full
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500 MW Turbine Erection Manual Full...
Description
ERECTION MANUAL STEAM TURBINE 500 MW (KWU DESIGN)
DOCUMENT NO. TS-T1-08
Bharat Heavy Electricals Limited POWER SECTOR TECHNICAL SERVICES (HQ) NOIDA
STEAM TURBINE 500 MW ERECTION
ERECTION MANUAL STEAM TURBINE 500 MW (KWU DESIGN)
DOCUMENT NO. TS-T1-08
Bharat Heavy Electricals Limited POWER SECTOR TECHNICAL SERVICES (HQ) NOIDA
Bharat Heavy Electricals Limited Rev 00, 7-98
STEAM TURBINE ERECTION MANUAL 500 MW (KWU DESIGN) Document No. TS-T1-08 Prepared by
Copy No
Revision
00
Name 1
SK Gupta, DGM, PS-WR, Nagpur
2
RK Mathur, Sr. Manager, PS-NR, Noida
3
Pratap Singh, DGM, PS-ER, Calcutta
4
PK Ramesh, Proj. Mgr., PS-SR, Madras
5
S. Bhattacharya, DGM, STE /FES, Hardwar
6
Ajay Sengupta, Sr.Manager, PS-Q, Noida
7
NK Bansal ,DGM, PS-TS(HQ), Noida
8
AK Sinha, Sr. Manager, PS-TS(HQ), Noida
9
NS Tomar, Manager, PS-TS(HQ), Noida
Approved By
Baboo Ram, GM (TS & Q), PS-TS(HQ), Noida
Issued By
Baboo Ram, GM (TS & Q), PS-TS(HQ), Noida
Issued to Date of Issue
Controlled Information Copy
FOREWORD
I am glad that Power Sector - Technical Services ( Head Quarters), Noida has brought out this erection manual of 500 MW steam turbine (KWU design) being produced by BHEL. This manual lays emphasis on site optimisation techniques which aims at uniform erection practices, improvement in quality, reduction in time cycle and saving in cost.
I am sure, this manual will form the basis for site erection activities so that the organisation can derive
full benefit out of this. It is
needless to emphasize that upgrading of technology is a continuous process and we have to review our methods of working and make suitable changes, wherever required.
New Delhi
(K P Mathur) Executive Director (PEM & TS)
PREFACE The Erection Manual for 500 MW Steam Turbine (KWU design) manufactured by BHEL for Thermal Power Stations has been prepared by a team of BHEL engineers having long experience in Erection & Commissioning, Design, Quality control of steam turbines. This dedicated team has been drawn from regional erection group, designed department of manufacturing units, PS-Q & TS-HQ, Noida. The manual carries general description of steam turbine, erection procedure, special instruction, general instructions, and various other technical instructions with an intention to establish an uniform approach for erection of steam turbine. The Erection Manual provides broad based guide line for erection of steam turbine. Product standard, technical circulars & BHEL drawings for the specific project will precede the instructions and guidelines furnished in this manual. Project specific document will be generated by region concerned. This document is generated as a standard Erection Manual for 500 MW fixed pedestal type steam turbine with spring loaded foundation. The work done by TASK FORCE is commendable. Feed-back and suggestions are welcome for the improvement of this Erection Manual to bringing down the cycle time with quality. BHEL reserves the right to suggest alternative necessity arises at site due to local site conditions .
NOIDA
procedure
if
(BABOO RAM) GENERAL MANAGER(TS&Q)
STEAM TURBINE 500 MW CODIFICATION FOR INSTRUCTION NUMBER
ERECTION
The following codification system is used for numbering of instructions and the codification of Log Sheets is as per FQA document. XX Alpha
X Numeric
XX Numeric
XX Numeric
XX X Numeric Alpha Type of Instruction
System Instruction No
System Designation
Rating of Main Equipment
Type of Manual
Product Code
1.1 PRODUCT CODE B
Boiler
BA
Boiler Aux.
T
Turbine
TA
Turbine Aux.
G
Generator
GA
Generator Aux
P
Power Plant Piping
CI
C&I
1.2 TYPE OF MANUAL Bharat Heavy Electricals Limited Rev 00, 7-98
page 1 of 3
STEAM TURBINE 500 MW CODIFICATION FOR INSTRUCTION NUMBER
ERECTION
1
Erection
2
Commissioning
3
Service
1.3 RATING OF MAIN EQUIPMENT 01
200/210 MW
02
120 MW
03
110 MW
04
60 MW
05
30 MW
06
100 MW
07
235 MW
08
500 MW
KWU Design
09
210 MW
KWU Design
10
120 MW
KWU Design
11
60 MW
KWU Design
12
70 MW
KWU Design
13
Industrial Units
14
210 MW
Tower Type Concrete Pylem
15
210 MW
Tower Type Steel Structure
16
500 MW
Tower Type Once through
17
250 MW
18
CCP
Bharat Heavy Electricals Limited Rev 00, 7-98
page 2 of 3
STEAM TURBINE 500 MW CODIFICATION FOR INSTRUCTION NUMBER
ERECTION
1.4 SYSTEM DESIGNATION SNO
DESCRIPTION
1.
TECHNICAL DATA
2.
INSTRUCTION FOR HANDLING AND STORAGE OF TURBINE
3.
ERECTION SEQUENCE
4.
ERECTION PROCEDURE
5.
GROUTING PROCEDURE
6.
ASSEMBLY OF IP MODULE AT SITE
7.
SEALING AND ANTISEIZING COMPOUNDS
8.
CRITICAL ACTIVITIES
9.
SPRING LOADED FOUNDATION
10.
ERECTION OF PIPING
11.
SPECIFICATION FOR GAS HEATING DEVICE
12.
SPECIFICATION FOR BREECH NUT HEATING DEVICE
13.
SPECIFICATION FOR THERMAL INSULATION
1.5 TYPE OF INSTRUCTION G
General
T
Technical
L
Log Sheet
C
Check List
Bharat Heavy Electricals Limited Rev 00, 7-98
page 3 of 3
INDEX
0sep.doc
STEAM TURBINE 500 MW ERECTION
CONTENTS
SNO DESCRIPTION
INSTRUCTION NO
1
TECHNICAL DATA
2
INSTRUCTION FOR HANDLING AND STORAGE T 1-08 -0202G OF TURBINE
3
ERECTION SEQUENCE
T 1-08 -0303G
4
ERECTION PROCEDURE
T 1-08 -0404G
5
GROUTING PROCEDURE
T 1-08 -0505G
6
ASSEMBLY OF IP MODULE AT SITE
T 1-08 -0606G
7
SEALING AND ANTISEIZING COMPOUNDS
T1-08 -0707G
8
CRITICAL ACTIVITIES
T 1-08 -0808G
9
SPRING LOADED FOUNDATION
T 1-08 -0909G
10
ERECTION OF PIPING
T 1-08 -1010G
11
SPECIFICATION FOR GAS HEATING DEVICE
T 1-08 -1111G
12
SPECIFICATION FOR BREECH NUT HEATING DEVICE
T 1-08 -1212G
13
SPECIFICATION FOR THERMAL INSULATION
T1-08 -1313G
Bharat Heavy Electricals Limited Rev 00, 7-98
T 1-08 -0101G
page 1 of 1
TECHNICAL DATA
0sep.doc
STEAM TURBINE 500 MW TECHNICAL DATA ERECTION
LOAD 500 MW
RATED
524.2
MAX. UNDER VALVE WIDE OPEN (VWO) CONDITION
CONSTRUCTION 500 MW
THREE CYLINDER REHEAT CONDENSING TURBINE SINGLE FLOW HP TURBINE WITH 17 REACTION STAGES
TYPE
H30-100-2
DOUBLE FLOW IP TURBINE WITH 12 REACTION STAGES PER FLOW
TYPE
M30-63
DOUBLE FLOW LP TURBINE WITH 6 REACTION STAGES PER FLOW
TYPE
N30-2X10
2 MAIN STOP AND CONTROL VALVES
TYPE
EV320-1
2 REHEAT STOP AND CONTROL VALVES
TYPE
IV560
MAKE
DN-800 BHEL,TIRUCHY
1 SWING CHECK VALVE IN COLD REHEAT LINE
DN-320
2 BYPASS STOP AND CONTROL VALVES
EXTRACTION SWING CHECK VALVES : EXTRACTION-1
: NO VALVE
EXTRACTION-2
: 1 SWING CHECK VALVE WITH ACTUATOR
EXTRACTION-3
EXTRACTION-4.1 EXTRACTION-4.2 EXTRACTION-5
: 1 SWING CHECK VALVE WITH ACTUATOR & 1 SWING CHECK VALVE WITHOUT ACTUATOR
-
MAKE
DN-800 BHEL,TIRUCHY
MAKE
DN-500 BHEL,TIRUCHY
MAKE
DN-500 BHEL,TIRUCHY
MAKE
DN-500 BHEL,TIRUCHY
MAKE
DN-400 BHEL,TIRUCHY
: 2 SWING CHECK VALVE WITH ACTUATOR : 2 SWING CHECK VALVE WITH ACTUATOR : 1 SWING CHECK VALVE WITH ACTUATOR & 1 SWING CHECK VALVE WITHOUT ACTUATOR
EXTRACTION-6
: NO VALVE
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0101G Page No. 1 of 9
STEAM TURBINE 500 MW TECHNICAL DATA ERECTION
SPEED RATED SPEED
50.0 /S
SPEED LIMITATION IN LOAD & STATION AUX. LOAD OPERATION MAX. SPEED, NO TIME LIMITATION MIN. SPEED, NO TIME LIMITATION
: :
524.2 51.5 /S 47.5 /S
PERMISSIBLE FOR A MAXIMUM OF 2 HRS. DURING THE LIFE OF LP BLADING SPEED BELOW SPEED ABOVE
: :
47.5 /S 51.5 TO 60 /S
SPEED EXECUTION RANGE AT OPERATION WITHOUT LOAD*
:
6.7 TO 47.5 /S
STANDARD OVER SPEED TRIP SETTING
:
MAX. 55.5 /s
* THIS SPEED RANGE SHOULD BE PASSED THROUGH IN ONE SMOOTH OPERATION TO AVOID ENDANGERING THE BLADES DUE TO RESONANCE
STEAM PRESSURES RATED*
LONG TIME OPERATION
SHORT TIME OPERATION
INITIAL STEAM
166.7
166.7
20.7
BAR
BEFORE 1st HP DRUM STAGE
154.4
163.4
169.9
BAR
HP CYLINDER EXHAUST
44.9
52.0
57.4**
BAR
IP CYLINDER STOP VALVE INLET
40.3
46.7
55.2**
BAR
EXTRACTION 6
44.9
52.0
57.4
BAR
EXTRACTION 5
17.5
22.2
22.2
BAR
EXTRACTION 4
7.2
8.7
8.7
BAR
EXTRACTION 3
2.58
3.2
3.2
BAR
EXTRACTION 2
1.329
1.66
1.66
BAR
EXTRACTION 1
0.257
0.41
0.41
BAR
LP CYLINDER EXHAUST
0.1013
0.3
0.3
BAR
* THESE VALUES CORRESPOND TO 500 MW LOAD WITH 3% MAKE-UP AND 0.1013 BAR BACK PRESSURE WITH ALL HEATERS IN SERVICE AND RATED STEAM CONDITIONS. ** THE SAFETY VALVES MUST BE SET SO THAT THESE SHORT TIME VALUES ARE NOT EXCEEDED.
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0101G Page No. 2 of 9
STEAM TURBINE 500 MW TECHNICAL DATA ERECTION
LONG TIME OPERATION : UPPER LIMIT VALUE, PERMISSIBLE WITHOUT TIME LIMIT. SHORT TIME OPERATION : PERMISSIBLE MOMENTARY VALUE. THE AGGREGATE DURATION OF SUCH SWINGS MUST NOT EXCEED 12 HOURS IN ANY ONE YEAR. ALL PRESSURES ARE ABSOLUTE PRESSURES
LOW VACUUM TRIP, STANDARD SETTING HYDRAULIC LOW VACUUM TRIP
:
0.3
BAR
ELECTRICAL LOW VACUUM TRIP
:
0.3
BAR
HYDRAULIC LOW VACUUM TRIP BYPASS OPERATION
:
0.6
BAR
:
35
MBAR
SEAL STEAM SUPPLY SYSTEM PRESSURE IN SEAL STEAM HEADER (ABOVE ATMOSPHERIC)
AXIAL SHIFT ALARM
TRIP
* 0.5 mm
* 1 mm
* DIRECTION OF ROTATION ANTI CLOCK WISE WHEN VIEWED FROM FRONT PEDESTAL TOWARDS THE GENERATOR
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0101G Page No. 3 of 9
STEAM TURBINE 500 MW TECHNICAL DATA ERECTION
STEAM TEMPERATURES RATED VAL. ANNUAL MEAN VALUE
LONG TIME VALUE (WITHIN ANNUAL MEAN VAL.)
400 h PER ANNUM
80 h PER ANNUM MAX. 15 MIN IN INDIVIDUA L CASE
INITIAL STEAM
536.0
546.O
552.O
566.0
O
IP CYLINDER STOP VALVE INLET
536.0
546.3
552.0
566.0
O
RATED VALVE *
LONG TIME OPERATI ON
80 h PER ANNUM MAX. 15 MIN IN INDIVIDU AL CASE
IN SPECIAL CASES AT NO LOAD
HP CYLINDER EXHAUST
340.0
360.0
440.0
500.0**
O
EXTRACTION 6
340.0
360.0
440.0
500.0**
O
EXTRACTION 5
413.9
421.9
459.9
O
EXTRACTION 4
292.1
304.1
346.4
O
EXTRACTION 3
187.3
195.3
242.3
O
EXTRACTION 2
128.3
139.3
184.3
O
EXTRACTION 1
66.5
86.5
136.5
O
LP CYLINDER EXHAUST
46.1
70.0
70.0
O
C C
C C C C C C C C
LONG TIME OPERATION : UPPER LIMIT VALUE, PERMISSIBLE WITHOUT TIME LIMIT. *
THESE VALUES CORRESPOND TO 500 MW LOAD WITH 3% MAKE-UP AND 0.1013 BAR BACK PRESSURE WITH ALL HEATERS IN SERVICE AND RATED STEAM CONDITIONS.
**
ONLY VALID FOR THE NO LOAD PERIOD WITH HIGH REHEAT PRESSURE AFTER TRIP-OUT FROM FULL LOAD OPERATION. FOR INDIVIDUAL CASE APPROX. 15 MINUTES THE TURBINE IS IMMEDIATELY RE-LOADED OR THE BOILER IMMEDIATELY REDUCED TO MINIMUM LOAD IF NO LOAD OPERATION IS MAINTAINED.
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0101G Page No. 4 of 9
STEAM TURBINE 500 MW TECHNICAL DATA ERECTION
CASING TEMPERATURES ALARM AT
MACHINE MUST BE SHUT DOWN AT
HP TURBINE CASING EXHAUST
480
500
O
OUTER CASING OF LP CYLINDER
90
110
O
WALL TEMPERATURES
C C
PERMISSIBLE DIFFERENTIAL TEMP. BETWEEN PARALLEL STEAM SUPPLY LINES :
NO TIME LIMITATION
SHORT TIME PERIOD (15 MIN.) : 28 OC
: 17 OC
IN THE HOTTEST LINE THE LIMITATIONS INDICATED FOR INITIAL STEAM & REHEAT TEMP. MUST NOT BE EXCEEDED. SPRAY WATER TO LP TURBINE MUST BE SWITCHED ON AT 90O C.
ALARM AT
MACHINE MUST BE SHUT DOWN AT
DIFFERENCE BETWEEN UPPER & LOWER CASING HALVES HP TURBINE. MIDDLE
* 90
* 100
O
LP TURBINE. FRONT
* 30
* 45
O
LP TURBINE. REAR
* 30
* 45
O
TEMPERATURES DIFFERENCE
C C C
FEEDWATER HEATER OUT OF SERVICE OPERATION WITH FEEDWATER HEATER OUT OF SERVICE
MAIN STEAM FLOW Kg/s
LOAD MW
EXTRACTION A6 = 0
395
500
EXTRACTION A5 = 0
421
500
EXTRACTION A3 = 0
423
500
EXTRACTION A2 = 0
425
500
EXTRACTION A1 = 0
423
500
EXTRACTION A6, A5 = 0
400
525
OUTPUT LIMIT DURING TESTING WITH AUTOMATIC TURBINE TESTER TESTING OF MAIN STEAM STOP & CONTROL VALVE
400
MW
TESTING OF HRH STEAM STOP & CONTROL VALVE
200 - 500
MW
MOTORING : MOTORING IS THE CONDITION IN WHICH THE TURBINE IS DRIVEN BY THE GENERATOR AT RATED SPEED WITH THE STOP & CONTROL VALVES CLOSED. IN THIS OPERATING MODE, CERTAIN TURBINE COMPONENTS ARE HEATED UP BY WINDAGE POWER IN THE BLADING. TO PREVENT HEAT-UP BEYOND PERMISSIBLE TEMPERATURES, MOTORING MUST NOT BE ALLOWED TO CONTINUE FOR LONGER THAN ONE MINUTE. IF THE CONDENSER LOW VACUUM LIMIT OF 0.3 BAR IS EXCEEDED, MOTORING MUST NOT BE ALLOWED TO CONTINUE FOR MORE THAN 4 SECONDS.
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0101G Page No. 5 of 9
STEAM TURBINE 500 MW TECHNICAL DATA ERECTION
BEARING TEMPERATURES ALARM AT
MACHINE MUST BE SHUT DOWN AT
OPERATION TEMPERATURE BELOW 75 OC
90
120
O
OPERATION TEMPERATURE 75 TO 85 OC
100
120
O
OPERATION TEMPERATURE 85 TO 90OC
110
120
O
OPERATION TEMPERATURE ABOVE 90OC
115
120
O
C C C C
VIBRATION ABSOLUTE BEARING HOUSING VIBRATION STANDARD ALARM SETTING
ABSOLUTE SHAFT VIBRATION 30 m ABOVE NORMAL LEVEL*
m
MAXIMUM ALARM SETTING
35
120
m
LIMIT VALUE FOR TRIPPING
45
200
m
* THE NORMAL LEVEL IS REPRODUCIBLE VIBRATIONAL BEHAVIOUR TYPICAL FOR THE MACHINE AND DEPENDENT ON THE OPERATING CONDITIONS, VIBRATION READINGS INDICATED IN CONTROL ROOM ARE HALF PEAK. THE ABOVE VALUES ARE ALSO GIVEN IN HALF PEAK.
WEIGHTS HP TURBINE, COMPLETELY ASSEMBLED
:
94.6
T
IP TURBINE. TOP HALF OUTER CASING
:
25.7
T
IP TURBINE, TOP HALF INNER CASING, COMPLETE WITH BLADING
:
15.5
T
LP TURBINE. TOP HALF OUTER CASING COMPLETE
:
42.6
T
LP CYLINDER, TOP HALF OUTER SHELL OF INNER CASING, COMPLETE WITH BLADING, STATIONARY BLADE CARRIERS & DIFFUSER
:
38.5
T
HP TURBINE ROTOR, COMPLETE WITH BLADING
:
16.3
T
IP TURBINE ROTOR, COMPLETE WITH BLADING
:
23.1
T
LP TURBINE ROTOR, COMPLETE WITH BLADING
:
85.8
T
MAIN STOP & CONTROL VALVE, COMPLETE WITH SERVO MOTORS, WITHOUT BEND & PIPE SECTION
:
20.9
T
REHEAT STOP & CONTROL VALVE, COMPLETE WITH SERVO MOTORS, WITHOUT BEND & PIPE SECTION
:
32.2
T
ALL WEIGHTS HAVE BEEN CALCULATED WITH SAFETY ALLOWANCES. SLINGS CHOSEN MUST PROVIDE SUFFICIENT SECURITY.
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0101G Page No. 6 of 9
STEAM TURBINE 500 MW TECHNICAL DATA ERECTION
OIL SUPPLY MAIN OIL TANK, RATED CAPACITY
:
25/40
Cu . M
Ist OIL FILLING (ESTIMATED)
:
47.5
Cu . M
FLUSHING OIL QUANTITY (ESTIMATED)
:
28.5
Cu . M
OIL COOLER FOR OPERATION, NUMBER
:
1
NO.
OIL COOLER FOR RESERVE, NUMBER
:
I
NO.
OIL TEMP. AT COOLER OUTLET, UNIT IN OPERATION MIN. NORMAL MAX.
: : :
38 45 47
OIL TEMP. AT COOLER OUTLET, UNIT SHUT DOWN MAX.
:
75
O
: :
20 25
O
TEMP. RISE OF OIL IN BEARINGS NORMAL MAX.
O
C
C C
ESTIMATED OIL REQUIREMENTS OF BEARINGS : BEARING 1(HP TURBINE, FRONT PEDESTAL)
:
0.8
dm3/S
BEARING 2
:
15.4
dm3/S
BEARING 3
:
4.1
dm3/S
BEARING 4
:
8.6
dm3/S
GENERATOR FRONT BEARING
:
7.92
dm3/S
GENERATOR REAR BEARING
:
7.92
dm3/S
EXCITER BEARING
:
0.70
dm3/S
1 DUPLEX OIL FILTER FOR BEARING OIL (FULL FLOW)
:
200
mm
DUPLEX OIL FILTER . TYPE - 2.62.9. SIZE 355/750. MAKE
:
BOLL & KIRCH
FILTRATION PARTICLE SIZE OF DUPLEX FILTER ELEMENT
:
37
m
FILTRATION PARTICLE SIZE OF MAIN OIL TANK FILTER ELEMENT
:
250
m
SAFETY VALVE IN JACKING OIL SYSTEM, SETTING MAX.
:
200
BAR
PRESSURE LIMITING VALVE IN JACKING OIL SYSTEM, SETTING
:
100
BAR
1 DUPLEX OIL FILTER FOR JACKING OIL
:
25
mm
FILTRATION PARTICLE SIZE OF JACKING OIL FILTER
:
37
m
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0101G Page No. 7 of 9
STEAM TURBINE 500 MW TECHNICAL DATA ERECTION
OIL PUMPS MAIN OIL PUMP
AUXILIARY OIL PUMP
DC EMERGENCY OIL PUMP
1
2
1
BHEL
KSB
KSB
TUSHAKO
97.22 dm3/S
ETA-15050VVL
ETA-10033VVL
SDF80
CAPACITY (RATED)
75
89.25
30
1.53
dm3/s
DISCHARGE PRESSURE (GAUGE)
8.6
6.2
2.3
178
BAR
SPEED
50
24.75
24.3
49.42
/s
DRIVE
TURBINE
AC MOTOR
DC MOTOR
QUANTITY MAKER TYPE
Bharat Heavy Electricals Limited Rev 00, 7-98
JACKING OIL PUMP AC : 2
DC : 1
AC MOTOR
DC MOTOR
T1-08-0101G Page No. 8 of 9
STEAM TURBINE 500 MW TECHNICAL DATA ERECTION
CONTROL FLUID SUPPLY CONTROL FLUID TANK, RATED CAPACITY
:
10/16
Cu . M
Ist FLUID FILLING (ESTIMATED)
:
15
Cu . M
FLUSHING FLUID QUANTITY (ESTIMATED)
:
10
Cu . M
CONTROL FLUID COOLER FOR OPERATION, NUMBER
:
1
NO.
CONTROL FLUID COOLER FOR RESERVE, NUMBER
:
I
NO.
CONTROL FLUID MAINTENANCE EQUIPMENT : GEAR PUMP MANUFACTURER TYPE
: :
STEIMEL BGK 2-24R
FLUID FLOW
:
0.28
dm3/S
GAUGE PRESSURE
:
3.06
at
SPEED
:
25
S-1
MOTOR POWER
:
0.75
KW
2 EARTH FILTERS MANUFACTURER TYPE
: : :
EARTH FILLING MESH
ROTRING PYG5-350 140
Kg
1 FINE MESH FILTER MANUFACTURER TYPE
: :
FILTRATION PARTICLE SIZE
:
FILTER MATERIAL
:
ROTRING S-1800-14-TUY m
3-5 COTTON
CONTROL FLUID SUPPLY SYSTEM A FIRE RESISTANT FLUID IS USED FOR THE CONTROL SYSTEM
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0101G Page No. 9 of 9
INSTRUCTIONS FOR
HANDLING &
STORAGE OF TURBINE
0sep.doc
STEAM TURBINE 500 MW ERECTION
1.
INSTRUCTIONS FOR HANDLING & STORAGE
SCOPE The document covers all steam turbine components and provides the handling, inspection and storage instructions for large steam turbine components at site. A strict adherence to these instructions is necessary to avoid damages during handling and storage at site.
2.
HANDLING OF EQUIPMENT : 2.1.
In any kind of rigging work it is necessary to strictly observe the safety precautions, since even the slightest negligence and non observance of the rules may result in accidents, which may cause damage to equipment or injury to men.
2.2.
The site for the rigging work involving lifting and conveying of loads should be well lighted. The loads must not be lifted unless the crane operator can see clearly the signals given by the rigger.
2.3.
The positions where the slings are to be put, are marked on the packages and on the drawings. While lifting/handling these packages/equipment, the slings should only be put at the proper places.
2.4.
The slings of the proper sizes and lengths should only be used for handling the equipment/packages. The angle between the two arms of the sling at the crane hook should be small (depending upon the dia of the sling) so as to have proper loading of the sling.
2.5.
The turbine rotors and cylinder covers (in assembled condition are lifted by the use of special lifting devices supplied by BHEL. The use of these lifting devices facilitates correct slinging and maintain horizontal position of the components. These devices, after use, should be properly stored and conserved so as to ensure that they do not get damaged during storage. Before using them, they should be thoroughly inspected.
2.6.
The work related to handling of the loads (packages or equipment) by crane or by other hoisting mechanism should be entrusted to trained riggers only. If the rigger/operator is not sure of the weight of the item/package (load) to be handled, he must ask for the required information before handling the equipment.
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0202G Page No. 1 of 11
STEAM TURBINE 500 MW ERECTION
INSTRUCTIONS FOR HANDLING & STORAGE
2.7.
The rigger and the crane operator should see that the hook and the ropes of the crane occupy vertical position, before hoisting the load. Dragging of the load by slanting ropes is not allowed. The center of gravity of the load should be aligned with the vertical axis of the crane hook.
2.8.
The eye bolts, 'D' shackles, turn buckles, and wire ropes of suitable sizes should only be used for handling of the equipment. Before using, they should be thoroughly inspected to their full threads, so as to avoid any chance of slipping then the load comes on them.
2.9.
Before giving a signal to lift the load, the rigger must check and ensure that there are no loose parts or tools on the load, which might fall during lifting. Then the load must be lifted 100 or 200 mm high for checking the uniformity of sling tensioning and reliability of lashing. If it is necessary to rearrange the sling lengths, the load must be lowered and then the slings rearranged.
2.10. Before horizontal conveyance of the load the rigger must see that the load has been lifted to a height at least 0.5 M above the tallest object, on the path of the load. While the load is being conveyed, the rigger must accompany it and see that it is not moved above any person. Prior to lowering the load the rigger should examine the ground on which the load will be, lowered and make sure that these is no risk of falling or slipping of the load. 2.11. If any one of the personnel present during lifting or lowering of the load detects some defect of the crane or sling of notices some conditions jeopardizing the lifting or lowering operation, he must give a signal for emergency grounding of the package or components. 2.12. Smooth lifting and transportation of equipment Shocks and jerks should be avoided.
must
be ensured.
2.13. All lifting devices, slings must be properly conserved after use and periodically inspected and tested. 2.14. In the turbines having diaphragms, it is prohibited to handle diaphragms by putting slings in between the blades. For handling the welded diaphragms, special lifting devices is supplied by BHEL and the cast diaphragms are handled by putting the eye bolts, for which the provision of threads holes have been made in the diaphragms.
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T1-08-0202G Page No. 2 of 11
STEAM TURBINE 500 MW ERECTION
INSTRUCTIONS FOR HANDLING & STORAGE
2.15. While handling the bearings, it is prohibited to put the sling across the rabbit surface of the bearings. Threaded holes have been provided; in which the eye bolts have to be put for handling of the bearings. 2.16. While handling the cylinders, it must be ensured that the slings or any other material does not get rubbed at their horizontal and vertical parting planes or at any other machined surface. 2.17. The handling of the long components such as longitudinal girder, endwall etc. should be done with extra care. When they are placed on the floor, in addition to the end supports, few extra supports at the intermediate positions must be provided. 2.18. While handling LP rotor with free standing blades, care must be taken to ensure that no force is exerted on the free standing blades to avoid collapsing of clamping pieces under blade root. 3.
MARKINGS ON PACKING CASES 3.1.
4.
Various symbols are marked on the packing cases as per 0456.001 to facilitate storage and handling of the crates and protection of equipment inside.
INSPECTION 4.1.
Before storing the equipment it should be opened for visual examination or the internal packing, protective coating and condition of the equipment. Any damage to packing and conservation should be immediately rectified.
4.2.
It is necessary to carryout first inspection within three weeks of arrival of the consignment. Thereafter, all the equipment should be inspected once in every three months to insure that the conservation is intact. During rainy season, the inspection should be done once in a month. At any time, if any original conservation is found damaged, it should be reconserved as per relevant conservation instructions No. ST 33004.
4.3.
While inspecting the packages containing rotors, special care should be taken to check the journals. In case of slightest sign of pitting on the journals and thrust collar, immediate steps for rectification should be taken and equipment reconserved as per relevant conservation instructions.
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0202G Page No. 3 of 11
STEAM TURBINE 500 MW ERECTION
5.
INSTRUCTIONS FOR HANDLING & STORAGE
STORAGE 5.1.
All steam turbine equipment should be accommodated in the designated place of storage immediately after arrival at destination. This is very essential particularly during the rainy season.
5.2.
Store houses fall into the following categories
TYPE OF STORE HOUSE
CONDITIONS TEMP.
RELATIVE HUMIDITY
'P'
+50 C to 500 C
< 70 %
'Q'
upto 500 C
-
Roofed area with walls (of brick / asbestos/ GI sheet ) around and cemented / pucca hard floor.
'R'
-
-
Raised platform with shed of asbestos / GI sheet / water proof tarapaulin.
'S'
-
-
Raised Platform.
Bharat Heavy Electricals Limited Rev 00, 7-98
ARRANGEMENT Totally enclosed, rain proof, ventilated and dry with cemented floor.
T1-08-0202G Page No. 4 of 11
STEAM TURBINE 500 MW ERECTION
INSTRUCTIONS FOR HANDLING & STORAGE
5.3.
The platforms and store-houses should be built up in conformity with the fire prevention rules and standards. Complete storage area especially the ‘R’ & ‘S’ catagory must be adequately fenced & protected against theft & pilferage.
5.4.
These store houses and areas around them should have proper drainage facility for the sub-soil, surface and rain water. The water should not be allowed to stand or get accumulated in these areas, especially where the material has been stored.
5.5.
Store house should be provided with proper ventilation facilities.
5.6.
Level should be maintained for all the packages and equipment and should be uniformly supported to avoid distortion. The long packages should be supported at intermediate places also, so as to avoid sagging during storage.
5.7.
Store houses should preferably be equipped with proper lifting devices to ensure normal handling of equipment.
5.8.
Small and medium size parts can be kept on shelves identification tags.
5.9.
Packages upto 5 tones can be placed on upon the other upto 2.5m in height using required number of wooden spacers 50 mm thick. In doing so, lighter packages would be laid upon heavier once to avoid any damage to lower packages.
with proper
5.10. Articles weighing more than 5 tones should be laid in a single tier. 5.11. For heavier components under ‘Q’, the constructed/fabricated after placement of cemented/pucca hard floor.
Bharat Heavy Electricals Limited Rev 00, 7-98
roof/walls may the component
be on
T1-08-0202G Page No. 5 of 11
STEAM TURBINE 500 MW ERECTION
INSTRUCTIONS FOR HANDLING & STORAGE
STORAGE OF STEAM TURBINE COMPONENTS SNO.
DESCRIPTION OF THE COMPONENT
TYPE OF STORAGE
1.
FOUNDATION BOLT
Q
2.
EMBEDDED PARTS (ADDITIONAL)
R
3.
COMPONENTS OF BASE PLATE ASSLY.
Q
4.
BASE PLATE LP CASING
R
5.
LP OUTER CASIONG
R
6.
LONGITUDINAL GIRDER (LEFT & RIGHT)
R
7.
LP FRONT WALL (TS&GS)
R
8.
LP SHAFT SEALING (FRONT & REAR)
Q
9.
AUXILIARIES OF TURBINE
Q
10.
HP/IP BEARING PEDESTAL
Q
11.
HP/IP BEARING PEDESTAL ASSEMBLY PARTS
Q
12.
IP/LP PEDESTAL ASSEMBLY
Q
13.
LP/GEN. PEDESTAL
Q
14.
BEARING PEDESTAL PARTS
Q
15.
FRONT BEARING PEDESTAL
Q
16.
LIFTING BEAM
R
17.
LP CASING EXTRACTION A1
R
18.
LP EXTRACTION A2
R
19.
LP EXTRACTION A3
R
20.
LP EXTRACTION PIPE SHEATHING
R
21.
INNER GUIDE PLATE DIFFUSER
R
22.
DIFFUSER (UPPER & LOWER HALVES)
R
23.
LP INNER-OUTER CASING (VH)
Q
24.
LP INNER CASING ASSEMBLY (LH & VH)
Q
25.
HEATING DEVICE
Q
26.
LP CASING ASSEMBLY
Q
27.
LP INNER CASING ASSEMBLY (FASTENER)
Q
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0202G Page No. 6 of 11
STEAM TURBINE 500 MW ERECTION
INSTRUCTIONS FOR HANDLING & STORAGE
28.
INNER GUIDE PLATE DIFFUSER (GS)
R
29.
LP ROTOR
Q
30.
IP TURBINE
Q
31.
IP TURBINE PARTS
Q
32.
IP INLET PIPES
Q
33.
HP TURBINE
Q
34.
HP INLET ASSEMBLY
Q
35.
HP EXHAUST ELBOW
Q
36.
HPT RELATED PARTS
Q
37.
FRAME FOR SUSPENSION (ESV)
R
38.
SUSPENSION OF VALVE (ESV)
Q
39.
ESV & CV CASING WITH VALVE
Q
40.
ESV SERVOMOTORS WITH LIMIT SWITCH
Q
41.
HP CONTROL VALVE SERVOMOTORS
Q
42.
SUSPENSION OF VALVE (IV)
Q
43.
IV & CV CASING WITH VALVE
Q
44.
IV SERVOMOTORS WITH LIMIT SWITCH
Q
45.
IP CONTROL VALVE SERVOMOTORS
Q
46.
FRAME FOR SUSPENSION (IV)
R
47.
IV SERVOMOTORS WITH LIMIT SWITCH
Q
48.
STEAM BLOWING & HYD. TEST DEVICE
Q
49.
TOOLS FOR GOVERNING SYSTEM
Q
50.
SUSPENSION OF LPB VALVE
Q
51.
WATER INJECTION VALVES
Q
52.
CHEST LPB WITH STOP & CONTROL VALVE
q
53.
LPB STOP VALVE SERVOMOTOR
Q
54.
LPB CONTROL VALVES SERVOMOTORS
Q
55.
INJR. FOR SUCTION PIPE NB 350
R
56.
INJR. FOR SUCTION PIPE NB 300
R
57.
MAIN OIL TANK
R
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0202G Page No. 7 of 11
STEAM TURBINE 500 MW ERECTION
INSTRUCTIONS FOR HANDLING & STORAGE
58.
MAIN OIL TANK & NOZZLE ASSEMBLY
R
59.
OIL STRAINER
Q
60.
LEVEL MONITOR INSTALLATION
Q
61.
INSTRUMENTS
Q
62.
LEAKAGE / DIRTY FLUID TANK
R
63.
VARIABLE ORIFICES & THROTTLE
Q
64.
CONTROL FLUID TANK
R
65.
CONTROL FLUID TANK NOZZLE ARRANGEMENT
R
66.
EXPANSION TANK
R
67.
FILTER & PR. DAMPING DEVICES
Q
68.
CROSS AROUND PIPE
R
69.
SUPPORT FOR CAP
R
70.
CHANGE OVER VALVE
R
71.
RATING & MONOGRAM PLATES
Q
72.
OIL STRIPER
R
73.
HOUSING FOR HRH STEAM STRAINER
R
74.
HOUSING FOR MAIN STEAM STRAINER
R
75.
MS & HRH STR.HSG GASKET
Q
76.
STEAM STRAINER MS
Q
77.
STEAM STRAINER HRH
Q
78.
COMPENSATOR
Q
79.
TURBINE CONTROL LPB / SUPPLY RACK
Q
80.
TEMPERATURE & PRESSURE CONNECTIONS
Q
81.
PR. TRANSMITTERS BAR. PROBES THERMOCOUPLES
Q
82.
TRANSMITTERS & JUNCTION BOXES
Q
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0202G Page No. 8 of 11
STEAM TURBINE 500 MW ERECTION
INSTRUCTIONS FOR HANDLING & STORAGE
STORAGE & PRESERVATION OF COMPONENTS OF TURBOGENERATOR, EXCITER AND SYSTEMS SNO.
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. 32.
DESCRIPTION OF THE COMPONENT
TYPE OF STORAGE
EMBEDDED PARTS FOUNDATION PARTS WOUND STATOR WITH GAS COOLERS TURNION FOOT PLATES ROTOR ASSEMBLY OF PIPE CONTROL FOR GAS COOLERS END SHIELDS FAN SHIELD, GEN VVIEW HEADER ASSEMBLY TERMINAL BUSHING AND HEADER ASSEMBLY BEARING WITH BRUSH GEAR SEAL BODY TEMP. CONNECTION CASING FOR TURNIONS ERECTION MATERIALS ERECTION DEVICES SHAFT SEALS SEAL RINGS ADOPTING RING AUXILIARY BEARING CENTRIFUGAL FAN CARBON DIOXIDE VAPOURISER FILTER O.C.P. EXPANSION TANK OIL SEPARATOR PRE CHAMBER S.O.S.T. SEAL OIL UNIT HYDROGEN DISTRIBUTION CARBON DIOXIDE DISTRIBUTION VALVES FOR AUXILIARY SYSTEMS GAS UNITS FLEXIBLE LEADS
R R Q Q Q R Q R Q Q Q Q R Q R Q Q Q Q Q Q Q R R R R Q R R P Q Q
STORAGE & PRESERVATION OF COMPONENTS OF EXCHANGERS Bharat Heavy Electricals Limited Rev 00, 7-98
HEAT
T1-08-0202G Page No. 9 of 11
STEAM TURBINE 500 MW ERECTION
SNO.
INSTRUCTIONS FOR HANDLING & STORAGE
DESCRIPTION OF THE COMPONENT
TYPE OF STORAGE
PRODUCT : CONDENSER 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19.
BOTTOM PLATE LOWER DOM WALL SIDE WALL WATER CHAMBER UPPER DOM WALL STIFFENING PIPES STIFFENING RODS TUBE SUPPORT PLATE WATER BOX AIR EXTRACTION PIPING HOTWELL SPRING ELEMENTS LOOSE ITEMS INSTRUMENTS CONDENSER TUBES (STAINLESS STEEL) CONDENSER TUBES (NON-FERROUS) VACUUM PUMP EJECTOR AIR MEASURING DEVICE
S S S Q S S S R R R S R Q Q R Q Q R Q
PRODUCT : HEATER 1. 2. 3. 4. 5. 1. 2. 3. 4. 5. 6.
GLAND STEAM CONDENSER STAND PIPE INSTRUMENTS DRAIN COOLER L.P.HEATERS PRODUCT : COOLER OIL COOLER CONTROL FLUID COOLER STATOR WATER COOLER HYDROGEN COOLER EXCITER AIR COOLER INSTRUMENTS / LOOSE ITEM
Bharat Heavy Electricals Limited Rev 00, 7-98
R Q Q R R R R R Q Q Q
T1-08-0202G Page No. 10 of 11
STEAM TURBINE 500 MW ERECTION
INSTRUCTIONS FOR HANDLING & STORAGE
MAXIMUM PERMISSIBLE LOADING FOR WIRE ROPES IN KG. NOMINAL DIA (d) OF ROPES mm
SINGLE CORD
9
DOUBLE CORD WITH INCLUDED ANGLE OF 0o
45o
90o
120o
522
1044
965
738
522
12
1170
2340
2070
1580
1170
18
2150
4300
4000
3060
2150
24
3850
7700
2100
5400
3850
30
6200
12400
11500
8800
6200
36
9000
18000
16600
12700
9000
42
12200
24400
22600
17300
12200
48
16000
32000
29500
22600
16000
54
20200
40400
37300
28500
20200
60
24900
49800
46000
35200
24900
66
30100
60200
55700
42600
30100
72
35800
71600
66200
50700
35800
78
42100
84200
77700
59500
42100
84
48800
97600
90200
69000
48800
90
56000
112000
103500
79200
56000
96
63700
127400
117700
90000
63700
102
71900
143800
132900
101700
71900
108
81000
162000
149700
114500
81000
114
89900
179800
166100
127100
89900
120
99700
199400
184300
141100
99700
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0202G Page No. 11 of 11
ERECTION SEQUENCE
0sep.doc
STEAM TURBINE 500 MW ERECTION SEQUENCE ERECTION
ERECTION SEQUENCE (For 500 MW Fixed pedestal type Turbine with spring loaded foundation) 1. Cleaning and checking of Turbine and Generator foundations as per the transverse and longitudinal axis including their elevation. 2. Prepare and install LP base plates, HP front pedestal, HP rear pedestal, LP front pedestal, LP rear pedestal along with their anchor bolts and anchor plates. 3. Provisionally
align and level all the pedestal and LP base
plates as per the
transverse and longitudinal axis including their elevation. 4. Matching of anchor plates of pedestal and LP base plates to ensure their perfect seating. 5. Finally align and level HP front, HP rear, LP front and LP rear pedestals along with LP base plates
as per the transverse and longitudinal axis
including their
elevation and catenary as per the design. 6. Prepare and install steel bars for LP casing centralising keys in foundation slab as per the required center line . 7. Weld locating ring of LP front pedestal and steel bars of LP front and LP rear centralising keys. 8. Prepare shuttering and grouting of the pedestals and LP base plates including anchor plates of HP rear pedestal. 9. Prepare, install, align/ level both the LP girder along with their carrier plates. 10. Prepare , install and assemble LP front and rear end walls with the LP girders. 11. Level / align LP outer casing lower half as per the transverse and longitudinal axis of the machine. Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0303G Page No. 1 of 7
STEAM TURBINE 500 MW ERECTION SEQUENCE ERECTION 12. Install permanent packers of LP outer casing including their radial and axial keys. 13. Prepare and install LP inner outer casing along with gusset plates in position 14. Align LP inner outer casing lower half and level it. Install LP casing parting plane platform . 15. Prepare and install LP front and LP rear lower half shaft seals housing and align it provisionally. 16. Prepare and install LP rotor along with their bellows in position. 17. Align LP rotor radially and axially in position and record free run out of rotor. 18. Record/ Ensure radial and axial clearances of the LP casing including rotor float including fitting of final axial keys of the LP inner casing . 19. Box up LP inner inner casing and heat tighten the parting plane bolts. 20. Box up LP inner outer casing . 21. Prepare and place HP module in position on temporary packers. 22. Transfer the load of HP rotor on bearings from the transport device and align it radially and axially. 23. Check free run out of HP rotor on journal and coupling face including its float. 24. Prepare and place IP module in position on temporary packers. (In case IP module is sent to site in disassembled condition, refer Instruction T1-08-0606G. 25. Loading of IP rear end of the shaft on bearing and removal of transport device. 26. Provisionally align HP , IP and LP rotor . 27. Couple HP / IP rotor on temporary Bolts and align rotor / casing radially and axially. 28. Record/ Ensure IP rotor float by shifting HP casing axially.
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0303G Page No. 2 of 7
STEAM TURBINE 500 MW ERECTION SEQUENCE ERECTION 29. Conduct Horn drop test of HP casing without any radial and axial keys and pipe lines. 30. Conduct Horn drop test of IP casing without IP inlet upper half pipe lines. 31. Assembly of breech nut of HP casing and Main Steam Stop & Control valve assembly. 32. Erection of Reheat Stop & Control valve assembly. 33. Weld IP inlet upper half pipe and record Horn drop values without radial-axial keys. 34. Alignment of HP/IP/LP rotors and their coupling on temporary bolts including its couple runout. 35. Swing check of HP rotor on its front end with temporary alternate bolt tightened on HP/IP coupling . 36. MOP alignment and its doweling. 37. Reaming/honing of HP/IP and LP/IP coupling including fitting of final coupling bolts. 38. Fixing of axial position of shaft and assembly of thrust bearing including its colour matching. 39. Roll check of HP/IP casing and fixing of radial and axial keys of the casing (Casing final packers need not to be put at this stage). 40. Assembly of bearings and checking of all clearances including fittings of side pads of bearing, yoke keys etc. 41. Turbovisory works in all the pedestal i.e. assembly and calibration of thrust bearing axial
shift, LP rotor expansions pick up, Hall generator and thermocouples of
bearing . 42. Preparations of the bearing for oil flushing. Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0303G Page No. 3 of 7
STEAM TURBINE 500 MW ERECTION SEQUENCE ERECTION 43. Oil flushing of the machine and normalizing the bearing after oil flushing. 44. Preparation and floating of TG deck as per Instruction No. T1-08-0909G. 45. Decoupling of HP / IP, LP/IP, LP/Gen., Gen./Exciter coupling and rechecking of alignment/catenary after floating of TG deck spring. 46. Final tightening of HP/IP, IP/LP , LP/Generator and Generator / Exciter coupling after correcting the alignment including their couple run out and swing check of rotor on HP Front and exciter rotor. 47. Checking /Correction of LP shaft seal clearance after floating of TG deck with CW pump in operation and water in the hot well of condenser upto operating level. 48. Roll check of HP, IP casing in up and down direction only with TG deck in floating condition and CW pump in operation including water in hot well upto normal level. 49. Assembly of final packers of the HP, IP casing after completing the roll check in up and down direction. 50. Recording of final Horn drop of HP and IP casing after completing the welding of HP inlet, HP exhaust , IP inlet and Cross around piping. 51. Preparation and boxing up of LP casing after competing the full Roll check of LP casing and fitting of final casing packers and radial keys. 52. Barring gear.
Bharat Heavy Electricals Limited Rev 00, 7-98
T1-08-0303G Page No. 4 of 7
STEAM TURBINE (500 MW) ERECTION
ERECTION SEQUENCE
ERECTION SEQUENCE BAR CHART OF 500 MW TG WITHSPRING LOADED FOUNDATION . - -- --- - - 1 2 ---3 ----. . . 7 ---. ---10 11---12 13 14 " " 17 ,. " 20 21 22 23 24 " .. 27 .. " WEEK
ACTIVITY
1
---- - ------Cleaning and checking of Turbine and Generator foundations transverse and longitudinal axis including their elevation.
2
Prepare
and install LP base
pedestal,
LP rear pedestal
plates, HP front pedestal,
0
as per the
.
-
--- 1-----
HP rear pedestal,
along with their anchor bolts and anchor
-
LP front
plates.
--------- -- -3 Provisionallyalignand levelallthe pedestal and LP base plates as per the transverse and longitudinalaxis includingtheir elevation. -4 Matching of anchor plates of pedestaland LP base platesto ensure their perfect seating. --------------- __on
5
6
Finally align and level HP front, HP rear, LP front and LP rear pedestals along with LP base plates as per the transverseand longitudinalaxis including their elevationand catenary as per the design. -------------------------------.
---
Prepare and install steel bars for LP casing centralising keys in foundationslab as per the required center line. ----------------------------17 Weld locating ring of LP front pedestaland steel bars of LP front and LP rear centralising keys. 1--- -8
g
Prepare anchor ---------
shuttering plates
and grouting
of the pedestals
of HP rear pedestal.
and LP base
plates
-----
--
----
n-
f-- --
-- -_. - - -
-
----
1----
-
-
- - - 1--- - - I--
---- --
I---
.---e------ ---.-
-
-.- ------- ------- - --- -
-- --- --- --
.
---.-
-
--
.-. ---
. -----
-
-- --- 1-
m
--
--
---- ---- --- --. n-- --.- --- --
-- --
-.- I----
--- --
- -----11 Level/ align LP outer casing lower half as per the transverse and longitudinal axis of the machine.
12 Install permanentpackers of LP outer casing including their radial and axial keys. .----
--
13 Prepare and install LP inner outer casing along with gusset plates in position _-_0_- -
-- I--- --
-
---
-- 1---- -
-.-- _n_--- -
e.'em____._--_n_----_o_--_o_-----------15 Prepare and install LP front and LP rear lower half shaft seals housing and align
Bharat Heavy Electricals Limited Rev 00, 7-98
-- -.- ... no_-
-
-- I-n-
I-
14 Align LP inner outer casing lower half and level it. Install LP casing parting plane
it proiirlally:.___-- -----------_._--____00- ----16 Prepare and install LP rotor along with their bellows in position.
---
+--- --
-
.- ---- -- I---- -
--- 1---1----_no.-
-- ---
.- -
_n_--- -
-m 1---- --
--
10 Prepare, install and assemble LP front and rear end walls with the LP girders.
-- f--
41 42 43
including
---------------
-
27 38 30 ..
.-
Prepare, install, align/level both the LP girder along with their carrier plates.
--_---__0- --
..
-
-- 1----r-- _n_n ---- .-- ------- --. --
---- -- 1---.-
--
30 31 32 33 34 ..
I
-
1----f--- r-----
--- --- I--- 1------
-
.
- 0
-
-
-- -- -----
-
- -0.._-. - ----- -- -- -0__-----
-
--
Ti-08-0303G Page NO.5 of 7
----
STEAM TURBINE (500 MW) ERECTION ACTIVITY
WEEK.
ERECTION SEQUENCE
- ->
0
"I 281:101"'I
.,-~-'~ 'I 'J. '~.'~-81---'-+-~~I-~'j '~j."jn~'I-"I.'8-L::1 '8j ~~ -~L'j.:~L"L2
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