Download Turbine RAS - Back Pressure Turbine 4...
WMQ2001399
Sept 20, 2010
R A SHAIKH PAPER MILLS PVT LTD. PLOT NO. 185, II PHASE, GIDC, VAPI 396195 GUJARAT Tel 2401586 Kind Attn:
Mr. Iqbal Shaikh- Director
Subject :
Techno-commercial Offer for the supply 3.7 MW/ 4 MW Back pressure TG Set.
Reference:
Your enquiry for back pressure Turbine dated 23Jan 2020
Dear Sir, We thank you for your enquiry. Further to the same, we are pleased to submit herewith our techno-commercial offer for the supply of 3.7 MW/ 4 Mw TG set for your kind perusal. We hope you will find the same in line with your requirements. However, should there be any clarifications, please feel free to get in touch with us. Thanking you and assuring you of our best attention at all times. Yours truly, for TRIVENI TURBINE LTD.
Ajay Narayan Gore Asst General Manager – Sales -West Zone Mobile No. – 9867385977 Email –
[email protected]
Naveen R. Senior Engineer– Mktg & Proposals
TRIVENI TURBINE LIMITED 12-A, Peenya Industrial Area, Bangalore 560 058, India. Tel: +91-80-2216 4000 Fax: +91-80-2216 4100 Website: www.triveniturbines.com Regd. Off: A-44, Hosiery Complex, Phase-II Extn., NOIDA - 201 305, Uttar Pradesh CIN: L29110UP1995PLC041834
Dear Customer, Triveni Turbines is an AS 9100D (Based on and including ISO 9001:2008) and ISO 14001:2004 certified company. As a commitment to environment we have laid out our environment policy which will be practiced during our operations, manufacturing and other areas of operation. All our products will confine to broad guidelines laid out by our EOHS policy.
For TRIVENI TURBINE LTD.,
Authorized Signatory
ENVIRONMENT AND OCCUPATION HEALTH & SAFETY (EOHS) POLICY
We at Triveni Turbine Limited manufacturing Steam Turbines and related products including the accessories are committed to: •
Produce the product and provide services to enhance the Customer satisfaction by ensuring prevention of pollution, reduction of waste, conservation of resources and creating safe working environment by ensuring prevention of injury and ill health
•
Comply will all applicable legal and other requirements with relation to EOHS.
•
Establish appropriate objectives in respect of EOHS to facilate the continual improvement.
•
Communicate the policy effectively to all persons working under the control of the organization including relevant interested parties such as Sub contractors, Suppliers, Transporters and Customers.
•
Persons working on behalf of the organization shall be provided with necessary competency in respect of EOHS with the intent that they are made aware of their individual obligations.
EXECUTIVE DIRECTOR
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 2 of 45
Why Triveni Most preferred supplier, with a market share of over 60% in India in the range up to 30MW Over 2500 installations across the globe in over 30 countries in all industry segments Over 500 turbines in process co-generation plants and nearly 100 turbines in biomass based IPPs Industry Bench Mark Delivery time. Helps our customers commission their power plants faster Best in class manufacturing plant in Bangalore with fleet of 4 Axis / 5 Axis machine. Manufacturing capacity of 150 turbines per year Every turbine is put through a Mechanical Steam Run Test (at factory, before dispatch) at Full speed to test vibration, safety trip etc. SCHENK High Speed Vacuum Tunnel balancing for precise dynamic balancing of large rotors. Ensures operation reliability 24 x 7 Service centers closer to our customers - 13 service offices across India with over 150 service personnel. We respond within 8 hours of an emergency call Life time support for spares and services to maximize the return on investment. Refurbishing solutions offered up to 150 MW for any make of turbine to enhance efficiency, availability and reliability. A decade old Research and Development department for continuous
improvement of existing models and development of new models. Associated with renowned design houses from USA – Impact Technologies LLC and Concepts NREC.
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 3 of 45
INDEX SECTION – I
TECHNICAL
Chapter – 1
:
Scope of Supply
Chapter – 2
:
Technical Specifications
Chapter – 3
:
Performance Parameter
Chapter – 4
:
Utilities to be provided by Purchaser
Chapter – 5
:
Limits of Tender and Exclusions
Chapter – 6
:
List of Tools & Tackles
Chapter – 7
:
List of sub-suppliers
Chapter – 8
:
Drawing & Documentation Schedule
Chapter – 9
:
QAP
Chapter – 10
:
Recommended Steam Purity chart
SECTION – II
COMMERCIAL
Chapter – 1
:
Price, delivery and special terms
Chapter – 2
:
General terms and conditions of sale
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 4 of 45
SECTION – I CHAPTER – 1 SCOPE OF SUPPLY I. MECHANICAL Steam Turbine Multistage, Nozzle governed, Horizontal spindle, two bearings, Impulse type cum back pressure steam Turbine with: - Hydraulically operated Stop & Emergency Valve with integral steam strainer for inlet - Hydraulically operated Throttle/Governing valves for inlet steam flow control. Gearbox - Double helical, single reduction Gearbox with hardened & ground gears. The design will be with a service factor of 1.5 as per AGMA 6011-I03. Couplings - Non-lubricated, steel laminated, flexible type, high-speed coupling and low speed couplings with coupling guards. Governing System - Electronic governor complete with electro-hydraulic actuator and magnetic speed pick ups. - Hydraulic accumulator - Control oil filter - Interconnecting control oil piping Lubrication system Forced feed lubrication system, common for Turbine, Gearbox & Alternator comprising of: - Lube oil tank (combined with turbine base plate) provided with cleaning doors and air breather - Main Oil Pump (MOP) driven by gearbox low speed shaft - A.C. Motor driven auxiliary oil pump for flooding the bearings during start-up and wired through a pressure switch for automatic cut-in and cut-out in the event of main oil pump not supplying required quantity of oil. - D. C. Motor driven Emergency lube Oil Pump (EOP) with auto cut-in & cut-out facility - A. C. Motor driven Auxiliary Control Oil Pump (ACOP) (1 working + 1 standby) - Suction strainers for MOP, AOP, EOP. - Pressure relief valves for discharge of MOP, AOP, MCOP, ACOP and lube oil line - Oil coolers (1 working + 1 standby) with on-line changeover arrangement - Oil filters (1 working + 1 standby) with on-line change-over arrangement - AC motor driven oil vapour extractor mounted on oil tank - Pressure regulating valve to achieve desired lube oil pressure - Set of complete lube oil piping within the limits of the turbine base frame and sufficient to meet the requirement of the ordered equipment. (The lube oil pipe will be SS downstream the filter and CS upstream of filter) Accessories - Motorized barring gear arrangement. - Base plate for turbine and gearbox - Vibration monitoring system- High speed train – Shinkawa make - Insulation for Turbine hot parts (lagging & cladding) Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 5 of 45
GVC with complete piping for gland seal and leakage returns to GVC and GVC drains to nearest drain point along with required steam traps and valves etc Set of foundation bolts. Set of special tools & tackles for maintenance
-
II. ELECTRICAL AC Generator AC Generator shall be complete with following: - Brush-less exciter - Air coolers - Twin bearings - Anti-condensation heaters - Water leakage detector– 1 per cooler - Lube oil flow regulator – 1 per bearing Auxiliaries for Generator protection and control - AVR cum Excitation panel - Generator protection (Relay) panel - Generator control (Metering & synchronizing) panel - Lightning arrestor, Surge capacitor and Potential transformer (LA, SC & PT) panel - Neutral grounding resistor (NGR) panel - Battery with maintenance tools - Battery charger - DC distribution panel III. CONTROL & INSTRUMENTATION The following instruments will be provided on the equipments supplied by Triveni. Tag nos.
Description
Location
Qty.
DPIS
Across lube oil filter.
Turbine Skid
1
LSH
Oil tank level high alarm
Turbine Skid
1
LSL
Oil tank level low alarm
Turbine Skid
1
LG
Oil tank level gauge
Turbine Skid
1
RTD
Turbine HP end bearing
Turbine Skid
1
RTD
Turbine LP end bearing,
Turbine Skid
1
RTD
Rotor Thrust brg,
Turbine Skid
2
SV
Solenoid valve
Turbine Skid
1
PG
EOP discharge pr
Local mounted
1
PG
Trip oil to LP trip
Local mounted
1
PG
Lube oil pr before cooler
Local mounted
1
PG
AOP discharge pr.
Local mounted
1
PG
MOP discharge pr.
Local mounted
1
PG
Inlet steam line
Local mounted
1
PG
Extraction steam line
Local mounted
1
PG
Exhaust steam line
Local mounted
1
PG
Inlet to GVC (Leakage steam)
Local mounted
1
PG
Control oil header
Local mounted
1
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 6 of 45
PG
ACOP discharge pr.
Local mounted
1
PG
Control oil pr after LP trip.
Local mounted
1
RTD
Bearing temp.-Rotor fore
Local mounted
1
RTD
Bearing temp.-Rotor after
Local mounted
1
RTD
Bearing Temp.-Gear pinion fore
Local mounted
1
RTD
Bearing Temp.-Gear pinion
Local mounted
1
RTD
Bearing temp.- Gearbox fore
Local mounted
1
RTD
Bearing temp.-Gearbox after
Local mounted
1
RTD
Lube oil temperature before Oil cooler
Local mounted
1
RTD
Lube oil temperature after Oil cooler
Local mounted
1
RTD
Thrust wear brg-1
Local mounted
1
RTD
Thrust wear brg-1
Local mounted
1
RTD
Alternator Bearing tempearature
Local mounted
2
RTD
Alternator Winding temperature
Local mounted
6
RTD
Alternator Hot air
Local mounted
2
RTD
Alternator cold air
Local mounted
2
TE
Thermocouple, turbine steam exhaust
Local mounted
1
TE
Thermocouple, steam extraction
Local mounted
1
TE
Thermocouple, turbine steam inlet
Local mounted
1
TG
Lube oil temperature before Oil cooler
Local mounted
1
TG
Lube oil temperature after Oil cooler
Local mounted
1
TG
Bearing temp.-Rotor fore
Local mounted
1
TG
Bearing temp.-Rotor after
Local mounted
1
TG
Bearing Temp.-Gear pinion fore
Local mounted
1
TG
Bearing Temp.-Gear pinion
Local mounted
1
TG
Bearing temp.- Gearbox fore
Local mounted
1
TG
Bearing temp.-Gearbox after
Local mounted
1
TG
Thrust wear brg-1
Local mounted
1
TG
Thrust wear brg-1
Local mounted
1
LPBS
LPBS
local control station
6
JB
Junction box,
Field
3
PS
High back pressure trip & alarm
Gauge panel
2
PS
Inlet steam pressre trip
Gauge panel
1
PS
Control oil pressure trip
Gauge panel
3
PS
EOP motor auto interlock
Gauge panel
1
PS
AOP motor auto interlock
Gauge panel
1
PS
Auto start/stop of ACOP
Gauge panel
1
PS
AOP & ACOP motor interlock
Gauge panel
1
PS
Barring Gear interlock
Gauge panel
1
PS
Lube oil pressure low trip and alarm.
Gauge panel
2
ZI
Turbine rotor axial movement,
X-axis-
Radial
TCP
Y-axis-
Radial
TCP
Vib Indicator ZI
Turbine rotor axial movement,
Vib Indicator XI
Turbine rotor fore bearing vibration, X-axis-
Radial
TCP
Radial
TCP
Vib Indicator XI
Turbine rotor fore bearing vibration, Y-axis-
Vib Indicator XI
Turbine rotor after bearing vibration, X-axis-
Vib Indicator Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Radial
TCP
1 1 1 1 1 Page 7 of 45
XI
Radial
TCP
Turbine pinion fore bearing vibration, X-axis-Radial
TCP
Turbine rotor after bearing vibration, Y-axis-
Vib Indicator XI
Vib Indicator Turbine pinion fore bearing vibration, Y-axis-
XI
Radial Vib Indicator Turbine pinion after bearing vibration, X-axis-
XI
Radial Vib Indicator Turbine pinion after bearing vibration, Y-axis-
XI
Radial Vib Indicator
1 1
TCP
1
TCP
1
TCP
1
Turbine Control Panel TC Panel shall house electronic governor, alarm annunciator for turbine faults, temperature scanner for turbine & gearbox bearing oil temperature monitoring, remote controls for all auxiliary motors of turbine, turbine safety interlocks & trip logic and turbine speed controls. Turbine Gauge Panel TG Panel shall house the pressure and temperature gauges for various operating parameters. Impulse piping with fittings shall be supplied loose for interconnection between field tap-off points and gauge panel. Turbine Aux. MCC MCC Panel shall house: - DOL starters for: • AOP motor •
ACOP 1 & 2 motors
•
Barring gear motor (Through soft starter)
•
Air blower motor
•
Vapour extractor motor
DC motor (EOP) starter panel DC motor starter panel shall house feeder & control circuit for EOP motor. Local push button station Local control stations with on/off push buttons for: • AOP motor •
ACOP 1 & 2 motors
•
EOP motor
•
Barring Gear motor
•
Air blower motor
•
Vapour extractor motor
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 8 of 45
Safety devices: - Over speed trip: Type -
-
-
-
-
:
Eccentric spring loaded oil dump valve
:
Spring loaded spool valve combined with LP trip
Low control oil pressure trip: Type :
Spring loaded spool valve combined with LP trip
High thrust wear trip: Type
:
Through vibration monitoring system
Hand trip: Type Operation
: :
Block & dump valve in trip oil line Local hand lever
Solenoid trip: Type Operation
: :
Solenoid operated block & dump valve De-energise to open & trip
Low lube oil pressure trip: Type
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 9 of 45
SECTION - I
CHAPTER – 2 TECHNICAL SPECIFICATIONS I. MECHANICAL STEAM TURBINE Design : Type
:
Casing split Rotor type
: :
Shaft seal No. of governing valves Bearing support Rated power
: : : :
Multistage, impulse, nozzle governed back pressure type Horizontal Solidly forged & machined rotor with integral disks. Labyrinth Three (Inlet) Double pedestal 3700 KWe/ 4000Kw
: : :
14 Kg/cm2g 1.5 Kg/Cm2g Servo prime ISO VG-46
: : : :
7750 Liters 3600 Liters (Integral) 5 minutes Carbon steel
:
Carbon steel
:
SS 304
:
Carbon steel
Main oil pump: Type Operating speed Driver
: : :
Gear (positive displacement) 1500 rpm Gearbox low speed shaft
Auxiliary oil pump: Type Operating speed Driver
: : :
Gear (positive displacement) 1500 rpm AC motor
Oil system: -
Oil: Governing oil pressure Lube oil pressure Oil type Oil quantity for initial fill and flushing Oil reservoir capacity Retention time Material of oil reservoir Material of oil piping from Pumps to filters Material of oil piping from Filters to bearings Material of oil piping from Bearings to reservoir
-
-
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 10 of 45
-
-
Auxiliary control oil pump: Type : Operating speed : Driver : Emergency oil pump: Type Operating speed Driver
-
Gear (positive displacement) 1500 rpm DC motor (2.2 kW , 110 V DC)
: : : : :
Plate Heat Exchanger 60 0C 46 0C SA 240 Gr. 316 Saddle support
: : :
Micro-felt 10 – 15 microns Foot
: : : :
Centrifugal 400 m3/Hr AC Motor Flange
: :
Tilting pad White metal - Babbitt
: :
Tilting pad White metal - Babbitt
: : : : : : :
Electronic (Woodward 505D) 2 speeds from MPU-1 & 2 80 to 110% of rated speed As per NEMA class D 3 to 6% (programmable) 110 V DC 2 Magnetic speed pick-ups (MPU)
Lube oil filter : Element type Oil filtration Capacity Mounting
-
: : :
Oil cooler: Type Oil inlet temperature Oil outlet temperature Plate material Mounting
-
Gear (positive displacement) 1440 rpm AC motor
Oil Vapour Extractor : Type Capacity Driver Mounting
Bearings: - Journal Bearings Type Material - Thrust Bearings Type Material Governing System: - Governor: Type Inputs (critical) Control range Control accuracy Speed droop Power supply Accessories
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 11 of 45
1 electro-hydraulic actuator -
-
Hydraulic Accumulator: Type Working fluid Capacity
: : :
Bladder Pre-charged Nitrogen 28 Liters
Governing oil filter: Element type Oil flow Capacity Oil filtration Capacity
: : :
Micro-felt 15 IGPM 10 – 15 microns
: : :
Double helical, Single reduction 1.3 Air breather
:
Flexible element
:
Flexible element with shear pins
: :
auto engage & disengage AC motor
: : : : : :
Shell and tube SA 249 TP 304 Carbon Steel IS-2062 Motor driven centrifugal air blower AC motor
:
90 dB(A) at 1 meter distance
GEARBOX Design: Type S.F. Accessory COUPLINGS -
High Speed Coupling Type Low Speed Coupling Type
ACCESSORIES -
-
Barring gear: Type Driver Gland vent condenser Type Tube material Shell & end cover material Tube sheet material Accessory Driver for air blower
GENERAL Noise level
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 12 of 45
II. ELECTRICAL AC GENERATOR Design : Rated output Rated voltage Rated frequency Combined variation of voltage & frequency Rated p.f. No. of phases No. of terminals Connection Rated speed / No. of pole Short circuit ratio Ambient temperature Excitation Rotor Cooling method Mounting Insulation Temperature rise Enclosure Duty Noise level Rotation Terminal box Reference standard
: : :
4000 KW 11 kV +/- 10% 50 Hz + / - 5%
: : : : : : : : : : : : : : : : : : : :
+ / - 10% 0.80 (lag) 3 phase, 3 for phase & 3 for neutral Star 1500 rpm / 4 pole More than 0.5 45 Deg.C Brush less Cylindrical CACW Horizontal Class F (both rotor and stator) Class B limits (both rotor and stator) IP-54 (Stator) & IP-54 (Exciter) Continuous and suitable for parallel operation 90 dB(A) at 1 meter distance To suit driver output To suit HT cable connection IS-4722
Bearings : Type Accessory
: :
Sleeve Temperature gauge
Lube oil system : Type Source
: :
Forced feed Turbine lube oil system
Air coolers : Cooling method Capacity Cooler tube material Mounting
: : : :
CACW 2 x 60% SS-304 Top
Anti condensation heaters: Type Power supply
: :
Resistance heating 230 V, Single phase
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 13 of 45
Water leakage detector: Location Quantity AVR CUM EXCITATION PANEL Design: Control type Control modes Voltage adj. Range Regulation Dead time
: :
Bottom of cooler 1 No. per cooler
: : : : :
Digital 1 auto + 1 manual +/- 10% +/- 0.5% Less than 30 mS
Features : - Compounding - Auto PF controller - Remote voltage control - Auto-Manual follow-up - Under frequency protection - Field flashing provision AVR cum excitation panel shall be complete with generator voltmeter, field voltmeter, field ammeter, PF meter, Auto/Manual selector switch, AC supply & DC supply on /off control switches, indicating lamps and space heater with thermostat. General: Type Dimensions in mm Weight
: : :
Simplex, dead front & free standing 800 (L) x 1000 (D) x 2310 (H) Approx 450 KG Approx.
GENERATOR RELAY PANEL Generator relay panel shall house the following: - Numeric Relay for generator protection: DESCRIPTION Under voltage protection relay Reverse active power protection relay Loss of excitation (Field failure) protection relay Auxiliary relays & timers for loss of excitation protection relay
Negative phase sequence protection relay Voltage controlled over current protection relay Over voltage protection relay Timer for over voltage protection relay PT fuse failure sensing relays Stator earth fault protection relay Under & over frequency protection relay Differential protection relay Df/dt, Vector surge Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
TAG NO. 27 32P 40G 40X 27/40G T1/40G T2/40G 46 51V 59 2-59 60A 64 81 87 Page 14 of 45
- Discrete Relays:
-
DESCRIPTION TAG NO. Voltage balancing Relay-Metering PT 60B Voltage balancing Relay-Metering PT 60C DC Supply Supervision Relay 80DC High Speed Trip Relay for Generator 86G High Speed Trip Relay for Grid 86L High Speed Trip Relay for Turbine 86T High Speed Trip Relay Supervision Relay for Generator 95G High Speed Trip Relay Supervision Relay for Grid 95L High Speed Trip Relay Supervision Relay for Turbine 95T The panel shall be complete with AC supply & DC supply on /off control switches, indicating lamps and panel space heater with thermostat. Temperature scanner for monitoring generator winding and bearing temperature Alarm annunciator for generator fault monitoring General: Type Dimensions in mm Weight
: : :
Simplex, dead front & free standing 1000 (L) x 1000 (D) x 2200 (H) 800 KG
GENERATOR CONTROL (METERING CUM SYNCHRONISING) PANEL Generator control panel shall house the following: - Meters Type : Digital System : 3 phase, 4 wire, unbalanced load Reference standard : IS-1248 Ammeters Voltmeter KW meter KVA meter KVAR meter PF meter Frequency meter Trivector Meter
-
Synchronising equipment Double voltmeter Double frequency meter Synchroscope Check synchronizing Relay Aux. relays for Synchronising scheme
: : : : : : : :
1 No. with selector switch 1 No. with selector switch 1 No. 1 No. 1 No. 1 No. 1 No. 1 N0.
: : :
1 No. 1 No. 1 No.
:
1 No.
:
1 Set
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 15 of 45
The panel shall be complete with synchronising selector switches, breaker control (T/N/C) switches, push buttons, AC supply & DC supply on /off control switches, indicating lamps and panel space heater with thermostat. General: Type Dimensions in mm Weight
: : :
Desk & free standing 1200 (L) x 1100 (D) x 2200 (H) 750 KG
LA, SC & PT PANEL LA, SC & PT panel shall house the following : -
-
-
Lightning arrestor Discharge current Quantity
: :
10 kA 3 Nos. (1 per phase)
Surge capacitor Capacitance per phase Quantity
: :
0.25 µF 3 Nos. (1 per phase)
Potential transformers For Quantity Protection 3 Nos. Metering 3 Nos. Excitation 1 No.
Secondary output 110 V 110 V 220 V
Class 3P 0.5 +/-5% regulation
The panel shall be complete with AC supply on /off control switch, illuminating lamp with limit switch for each PT compartment, indicating lamps and space heater with thermostat. General : Type Terminal box Material of busbars Dimensions in mm Weight
: : : : :
Simplex, modular & free standing To suit HT Cables Aluminium 1800 (L) x 1650 (D) x 2200 (H) 1,000 KG
NEUTRAL GROUNDING RESISTOR PANEL NGR panel shall house the following: - Resistor Type : Naturally air cooled Duty rating : 10 seconds Resistor grid type : Punched steel Temperature rise : 3750 C over ambient (max.) Mounting & fixing of Resistor units : Mounted on grid rods; fixed and assembled in tiers separated by porcelain insulators - Neutral isolator Operation
:
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Manual. Page 16 of 45
-
-
No. of poles Limit switches
: :
One 2 Nos. (for on / off positions)
Earth connection Type Quantity
: :
Porcelain insulated 12 mm terminal studs Two Nos.
Current transformers For Quantity Differential 6 Nos. protection Earth fault 1 No. protection Metering 3 Nos. Compounding 1 No.
Secondary output 1A
Class PS
1A
5 P 10
1A 1A
0.5 1
The panel shall be complete with AC supply & DC supply on /off control switch, illuminating lamp with limit switch for each PT compartment, indicating lamps and space heater with thermostat. General: Type Terminal box Material of busbars Dimensions in mm Weight BATTERY Type Capacity Rating Volt per cell No. of cells
: : : : :
: : : : :
Simplex, dead front & free standing To suit HT Cables Aluminium 1500 (L) x 1000 (D) x 1400 (H) 1,000 KG
Maintenance Free 200 AH 110 V, DC 2 V, DC 55
BATTERY CHARGER CUM DC DISTRIBUTION PANEL Battery charger cum DC distribution panel shall house the following: -
Battery charger Quantity Input Output
: : :
Voltage regulation Operation mode
: :
One float & one float cum boost charger 240 V, 1 phase, 50 Hz, AC supply 15 A, 110 V DC (Float charger) 20 A, 110 V DC (Float cum boost charger) +/- 1% from no-load to full load Auto / Manual
Charger panel shall be provided with alarm for following faults: • Float charger failed • Float cum boost charger failed • DC voltage high • DC voltage low Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 17 of 45
• •
AC supply failed Batter earth fault
Charger panel shall house following meters : • AC Voltmeter • DC Voltmeter with selector for load/charger/battery • DC Ammeter for load • DC Ammeter for charger • DC Ammeter for battery -
DC distribution system Panel shall be provided with feeders for: DC motor starter panel : 1 No. Relay panel : 1 No. Generator control panel : 1 No. AVR cum excitation panel : 1 No. Turbine control panel : 1 No. Spare : 2Nos. General : Type Dimensions in mm Weight
: : :
Simplex, dead front & free standing 1200 (L) x 1000 (D) x 1800 (H) 300 KG
AC MOTORS Type Winding connection Duty Enclosure Cooling Insulation Power supply Speed / No. of poles
: : : : : : : :
Induction Delta Continuous IP-55 TEFC Class “F” 415 V, 3 Phase, 50 Hz To suit driven equipment
DC MOTOR Type Duty Enclosure Cooling Insulation Power supply Speed
: : : : : : :
Shunt field Continuous IP-55 TEFC Class “F” 110 V 1440 RPM
TURBINE CONTROL PANEL Turbine control panel shall house the following : - Electronic governor with keyed-in operating program - Vibration monitoring system - Relay based hard wired turbine safety interlocks and trip logic - Remote controls comprising of selector switches, ammeters, push buttons & indicating lamps for: Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 18 of 45
-
• AOP motor • ACOP motor • EOP motor • Barring gear motor • Vapour extractor motor • Air blower motor Push buttons for turbine speed raise and lower Turbine remote trip/reset push buttons Temperature scanner for Monitoring turbine and gearbox bearing temperature Alarm annunciator for Turbine fault monitoring
The panel shall be complete with AC supply & Dc supply on /off control switches, indicating lamps and space heater. TURBINE GAUGE PANEL Turbine gauge panel shall house the following gauges: -
Pressure gauges for: Inlet steam HP Wheel case
Exhaust steam Lube oil Control oil -
-
Temperature gauges for: Inlet steam Exhaust steam
Turbine speed indicator and speed raise / lower push buttons
DC MOTOR (EOP) STARTER PANEL DC motor starter panel shall house the following: -
Incoming feeder complete with switch-fuse unit, voltmeter, ammeter and indicating lamps 2 step resistance starter for EOP motor complete with switch-fuse unit, contactor, overload relay, ammeter, indicating lamps & pushbuttons.
TURBINE AUXILIARY MCC MCC panel shall house the following: - Incoming feeder complete with switch-fuse unit, voltmeter, CT operated ammeter, indicating lamps & bus bars - DOL starter complete with switch-fuse unit, contactor, overload relay, CT operated ammeter, indicating lamps & pushbuttons for : • AOP motor • ACOP 1 & 2 motor • Barring gear motor (with soft starter) • Air blower motor • Vapour extractor motor Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 19 of 45
GENERAL SPECIFICATIONS OF INSTRUMENTS -
Pressure and Temperature Gauges Dial : 150 mm circular Scale : 270 Deg. arc with black pointer Type : Bourdon (pressure gauge) Mercury in steel (temperature gauge) Accuracy : +/- 1 % Over range protection : 125 % Accessories : Shatter proof safety glass
-
Pressure Switch Sensor type Material of case Material of bellows
-
Pressure Transmitter Type Input Output Material for process connection internals
: : :
Bellows Die cast aluminium SS-304
: : :
2 wire, capacitance & electronic Direct 4 – 20 mA
:
SS-304
-
Resistance Temperature Detectors: Element type : PT-100, 3 wire
-
Solenoid Valve Power supply Operation Type
: : :
110 V DC De-energise to open 2 way, universal ports
Level Switch Type Material of body & float Material of case
: : :
Magnetic float AISI-304 Die cast Aluminium
Temperature Scanner Power supply Input Display
: : :
Display mode Scan rate Accuracy
: : :
230 V, AC, Single phase PT-100, 3 wire RTD Channel No. & bearing / winding temperature Auto / Manual Programmable +/- 1 Deg.C
Alarm Annunciator Type Input protection Colour of window
: : :
-
-
-
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Modular, plug-in cards, interchangeable Optical isolation provided through opto couplers Milky white (pre-trip alarm) Red (Trip alarm) Page 20 of 45
-
Power supply Fault initiation Accessories
: : :
110 V DC Make to alarm Electronic hooter and Push buttons for Test, Acknowledge & Reset
Air Filter Regulator Filter element Element material Body material
: : :
5 microns Sintered bronze Cast aluminium ***
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 21 of 45
SECTION - I CHAPTER – 3 PERFORMANCE DATA As applicable PERFORMANCE Inlet Steam Pr. (kg/cm2g)
67
Inlet Steam Temp. (0 C) Inlet Steam Flow (TPH)
490 30
Exhaust Pressure (Kg/cm2g) Exhaust Flow (TPH) @ Electrical Output (MWe)
4.5 30(approx) 3.7
Note: 1.
The above consumption data apply at steady state conditions, with the control valve fully open, deposit free blading and clean surface of cooling equipment in accordance with the Triveni performance Test Procedure which is based on the IEC PART-II code.
2.
This consumption does not include the power and steam requirements of the condensing plant and auxiliary equipments. Instrumentation tolerance of +or- 3% is allowed as per the international testing practices.
3.
The data furnished are based on nominal steam parameters at turbine inlet, extraction and exhaust flange.
4.
Steam quantity should be maintained at inlet and extraction points for guarantee point as mentioned elsewhere in the bid.
5.
The following are not included in the auxiliary power consumption furnished in Auxiliary power guarantee. a) All standby equipments. b) All electrical actuators and motorized valves c) Other intermittent equipments
6.
Auxiliary power consumption indicated is at motor input terminals.
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 22 of 45
SECTION – I CHAPTER – 4 UTILITIES TO BE PROVIDED BY THE PURCHASER A.
COOLING WATER (FRESH) Inlet pressure Inlet temperature Temperature rise (∆T)
: : :
CONSUMER / PURPOSE
CONTINUOUS DEMAND
Turbine oil cooler Generator air cooler Gland vent condenser B.
For control purpose
:
5 SCFM at 7.0 Kg/cm2
AC POWER Power supply CONSUMER AOP Motor ACOP Motor Air Blower Motor Vapour Extr. Motor Barring Gear Motor
Note :
80 M3/Hr 80 M3/Hr 40 M3/Hr
INSTRUMENTATION AIR 1.
C.
2.5 kg/cm2g 32 Deg. C 4-5 Deg. C for Turbine oil & Generator Coolers. 8 Deg. C for GVC.
:
415 V, 3 phase, 50 Hz, TP & N
INTERMITTENT DEMAND 11 kW (During start-up & shut-down) N/A N/A N/A 7.5 kW (During shut-down)
CONTINUOUS DEMAND N/A 3.7 KW 2.2 kW 0.75 kW N/A
All utility figures mentioned above are indicative only. The actual requirement shall be furnished during detailed engineering.
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 23 of 45
SECTION - I CHAPTER – 5 LIMITS OF TENDER & EXCLUSIONS LIMITS OF TENDER: The offer is complete within the following limits beyond which Purchaser shall arrange any and all equipments: 1. 2. 3. 4. 5. 6. 7. 8.
Inlet flange of Stop and emergency valve of the turbine. Exhaust Flange of the turbine. Inlet and outlet flanges of the cooling water connections of oil cooler ,generator air cooler & GVC. Turbine drains with drain cocks terminated at nearest drain point. Instruments, air connections within the battery limit of not more than 5 meters from the turbine. Utility / Auxiliary power at the control panel terminals. At the incoming/ outgoing terminal of Alternator. At the incoming terminals to each motors.
EXCLUSIONS: The following items are not included in sellers scope of supply and shall be arranged by purchaser: 1. 2. 3. 4.
5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23.
Steam and cooling water piping. Any piping and valves outside the above limits. Steam flow meters. Platforms, ladders of floor/platforms, foundation or civil work, supply of embedment’s, inserts (other than foundation bolts for STG) of any nature including their design. Routing design for piping and supports. All HT, LT power, control and instruments cables along with cable termination kits, glands, lugs etc and cable trays for same. Utility/Auxiliary & emergency power and air supply. Earthing & Earth Pits outside our battery limits. Inlet isolation valve. Electrical distribution system, outdoor switch yard & associated equipments. Deaerator, Cooling Tower, related instruments and piping. VCB panel Blanking Device for steam blowing Turbine exhaust expansion bellow Turbine exhaust FFRV, NRV,ISV. PLC panels and ups for panels Any Valves, instruments other than the list mentioned in scope of supply PRDS/DS and accessories Oil Centrifuge Auto synchroniser Fire detection, alarm and protection system. Crane gantry. Complete Earthing and earth pits.
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 24 of 45
24. 25. 26. 27. 28.
First fill of oil and Flushing oil Unloading of turbine, gear box, alternator and other auxiliaries at site. Erection of turbine is by Customer. (only Supervision of Erection and commissioning by Engineers of Triveni turbine Ltd. ) All/any statutory approvals Any item not specifically mentioned in our offer.
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 25 of 45
SECTION - I CHAPTER – 6 LIST OF TOOLS AND TACKLES
` Sl.No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Description ALLEN KEY-SIZE 1/16TO3/4(SET=14NOS) CIRCLIP-PLIER-EXTERNAL-6/7" CIRCLIP-PLIER-INTERNAL-6/7" DOUBLE-END-SPANNER-SET- 1/4 TO 3/4" DOUBLE-END-SPANNER-7/8" X 1" DOUBLE-END-SPANNER-1-1/8" X 1-1/4" RING-SPANNER-1/4" TO 3/4" SET ADJUSTABLE SPANNER-6" PIPE WRINCH-12" SCREW DRIVER 6" NO:925 SCREW DRIVER 12" NO: 929 DOUBLE-END-SPANNER-24 X 27 DOUBLE-END-SPANNER-30 X 32 RING SPANNER-24 X 27 RING-SPANNER-30 X 32
Qty. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
OVER SPEED TRIP CAP REMOVAL
16 BOLT
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
1
Page 26 of 45
SECTION - I CHAPTER – 7 LIST OF SUB-VENDORS SL ITEM NO
MAKE / VENDOR Southern Lubrication/ Fil Sep /Cenlube/SKF /Lincoln Helios
1
Separate System
2
Level gauge & Level Chemtrol/V Automat/ Waree switches
3
Level Indicator controller
4
Temperature /Pressure Yokogawa Indicator
5
Flow Recorder
Yokogawa
6
Pressure switches
Switzer (Wika)
7
Pressure,Temperature, Yokogawa(Pressure&DP/level Transmitter)/Emerson Level, and DP/Flow (Temperature Transmitter only)/ ABB Transmitters
8
Temperature Scanner/DAC
Massibus/ YOKOGAWA(DAC)
9
AC Motors
KEC / Crompton /Siemens/ABB
10
Strainers- Y type
Spirax Marshall/Hydrotherm / Precision/JPRENVIROTECH
11
Steam traps
Spirax Marshall / Pennant/Forbes Marshall/ASIAN SYSTEMS
12
Full Flow Relief Valves
Fainger/TYCO
13
High pressure valves
GM Engg / Xomox sanmar(Pacific Valves)/ Micon Valves/Fluidline Valves/KSB/Expert / Cesare Bonetti / Valtech
14
Level control valves / Pneucon/ MIL / Forbes Marshall / Inditech/Emerson Pressure Control Valves
15
Low pressure valves
16
Pumps-->Sulzer / KSB /Flow Serve/Ruhrpumpen / C E Pumps with Motors KBL Motors--> KEC/CROMPTON/ABB/SIEMENS
17
Condenser
Lube
Oil
cum
Yokogawa
GM Engg / Xomox sanmar(Pacific Valves)/ Micon Valves/Fluidline Valves/KSB/Expert / Cesare Bonetti / Valtech
Godavari Engineering / Chem Process Systems / Mazda
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 27 of 45
/ Universal Heat Exchanger-cbr/TEMA/KELVION/ C Doctor 18
Ejector
Mazda
19
Expansion bellow
Lonestar / Metallic bellows/ FLEXICAN/India flex/ Precise/Athulya Bellow & Engg / MB Metallic Bellow
20
First Fill Oil
ELF Brand Lube oil ( Total Lubricants) / Savitha oil (SAVSOL)/IOCL/BPCL/SHELL/BALMER
21
PIPES & FITTINGS
Southern Engg., Chennai / ARK-Engg / SARA INDUSTRIES
22
-TURBINE -PIPING INSULATION
TTL Ceramic Insulation Lloyds Insulation / Rock wool industries
23
GVC
Eskay /MAZDA / Chem Process/
24
Oil Centrifuge
Alfa Laval / GEA Westfalia
25
PRDS & Control valves
Forbes Marshall / Chemtrols Industries/ Bomafa/ Inditech
26
Rupture disc
BS&B
27
HP / LP Heaters
Godavari Engineering / Chem Process Systems / Mazda / C Doctor
28
Butterfly Valves
Intervalve / Hawa Valves / Fouress Group/ Micon Engineers/Delval flow controls / Cesare Bonetti / Advance Valves
29
Rubber Bellow
Cori Engineers / Precise
30
AC Generator -HT
TDPS/WEG(India)/ANDRITZ( VATECH) /BHEL/CGL
31
AC Generator -LT
TDPS /BHEL / Cummins Generator Technologies (Cummins/Stamford/AVK)/ EMERSON -Formerly LEROY SOMER / MARELLI/ CGL/ WEG
32
ACB Panel
Vee Vee Controls/Nikitech/ABM Energo/Armax Automation/Balaji Controls/ Lotus powergear / Equivalent
33
ACDB Panel
Vee Vee Controls/Nikitech/ABM Energo/Armax Automation/Balaji Controls/ Lotus powergear , Equivalent
34
Soft Starter Panel
Vee Vee Controls/Nikitech/ABM Energo/Armax Automation/Balaji Controls/ Lotus powergear / Equivalent
35
Soft Starter
L&T/ABB
36
AVR- Analog
NAREN-Bangalore / SANELEC –Bangalore
37
AVR-Digital
SANELEC -Bangalore(REIVAX -Make) for 1A+1M & 2A+2M/ABB – Bangalore/ Basler (Only for CE jobs)/TDPS
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 28 of 45
38
Battery
EXIDE/ Amararaja /Chloride Power Systems/Equivalent
39
Battery Charger
NAREN/ Universal /Amararaja/ Choride Power/Green Secure /Equivalent
40
BBT-HT
BUSBAR SYSTEMS / LOTUS Power Gear/ Vee Vee Controls /Equivalent
41
BBT-LT
BUSBAR SYSTEMS / LOTUS Power Gear /Vee Vee Controls /Equivalent
42
Cables- HT
Thermo Cables/KEI/Universal/GLOSTER/Poly Cab
43
Cables-LT (POWER & Thermo cables/ Sbee Cables/ Equivalent CONTROL CABLES)
44
Cables-LT CABLES)
45
Switch Gear C&S/ L&T/ABB/Siemens/Schneider/ Equivalent Components-Make
46
DC Motor Starter Panel
Vee Vee Controls/Nikitech/ABM Energo/Armax Automation/Balaji Controls/ Lotus Powergear , Equivalent
47
Flow Nozzle & Orifice
Symphony, pune/GIC-mincoasis)
48
LA, SC & PT panel
Vee Vee Controls/Balaji Eletrocontrols/ABM Energo/AMP Controls / Lotus powergear , Equivalent
49
Lightning Make
OBLUM/IGE / EPROM
50
MCC Panel
51
Vee Vee Controls/Nikitech/ABM Energo/Armax Metering and Automation/Balaji Controls/ Lotus Powergear , Synchronising panel Equivalent
52
Meters-Digital Make
El measure/ Schneider (formerly-Enercon/consezerv) / Rishab Make in for Battery Chargers/ Meco for AVR only
53
TVM
L&T / SECURE
54
TRANSDUCER
RISHAB
55
NGR panel
Vee Vee Controls/Balaji Eletrocontrols/ABM Energo/AMP Controls / Lotus powergear / Equivalent
56
PLC SYSTEM-Make
57
PT's and CT's-HT Make
Instrans ( PREFERED)/KALPA/ECS- CT& PT only/Pragati
58
PT's and CT's-LT Make
New Tech/Kalpa/ Indcoil/Instrans/Pragati
(SIGNAL
Arrestors-
Thermo cables/ Sbee Cables/ Equivalent
Vee Vee Controls/Nikitech/ABM Energo/Armax Automation/Balaji Controls/ Lotus Powergear , Equivalent
GE(Rx3i)/ SIEMENS(S7-300)/Schneider /Softcon (Allen Bradley)/ Honeywell
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 29 of 45
59
Relay Panel
ABB / GE T&D (Alstom T&D )/ Schneider/ LOTUS(Generator Protection relay –Siemens/ ABB /Alstom make)/ Vee Vee Controls (Generator Protection relay – Siemens/ABB /Alstom make) /Equivalent
60
Relays- Make
GE T&D (Alstom T&D )/Schneider/ABB/ GE Multilink/ Siemens/CSPC/ WOODWARD
61
Surge capacitor-Make
Madhav
62
Turbine Control Panel &Turbine Gauge cum Syspro Automation/Chemin Controls / Equivalent Pressure Switch cum Transmitter Panel
63
Breaker-HT
Seimens /ABB /Lotus ( Siemens /ABB) / Schneider(formerly Areva T&D)/Vee Vee Controls ( Siemens /ABB) /NIE (ABB)
64
Cable trays
Patny Systems, Hyderabad/ ELCON-Pune/ MNR Electricals-Hyderabad
65
LPBS/JUNTION BOX/ Vega Switch gear / Vee Vee control/ HENSEL VMS JB
66
AGC-4 controller/Load DEIF control panel
67
Governor
Woodward / Trisen / Dawson-Australia
68
QCNRV
Bonnetti/ Armatury-Czech
69
Vibration Monitor
IRD/MEGGIT/Bently Nevada / Shinkawa/Alstom
Note : The aforesaid list is for indicative purpose only. TTL's scope of supply is as per the 'Chapter –I – Scope Of Supply of this offer document'.
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 30 of 45
SECTION - I CHAPTER – 8 DRAWING AND DOCUMENTATION SCHEDULE
DRAWING / DOCUMENTATION DESCRIPTION
INFORMATION (I) / APPROVAL (A)
FINAL
P&I diagrams: Steam system Governing & lube oil system Cooling water system, Turbo visory scheme. Foundation Block Plan Power House Lay-out Electrical Single line diagram GA Drawing of Turbine GA Drawing of Alternator GA & Schematics of AVR Panel GA & Schematics of LAPT & NGR Panels GA & Schematics of Relay Panel GA & Schematics of MCS Panel GA & Schematics of TCP & TGP GA & Schematics of TG Aux. MCC GA & Schematics of DC Motor starter GA & Schematics of Battery charger Performance curve Electronic governor program chart Relay setting chart Cable Schedule Maintenance manuals
1 set (A)
1 set
1 set (A) 1 set (A) 1 set (A) 1 set (I) 1 set (I) 1 set (I) 1 set (I) 1 set (I) 1 set (I) 1 set (I) 1 set (I) 1 set (I) 1 set (I) ------
1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set 1 set & 1 soft copy
NOTE : 1. Drawings shall be submitted for information / approval within 8 to 12 weeks from date of receipt of technically & commercially clear purchase order/LOI along with advance. You shall approve all drawings submitted for approval within a period of 15 days of submission failing which our delivery will get affected.
2. Final drawings and documents shall be submitted along with supply of equipment.
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 31 of 45
SECTION - I CHAPTER – 9 Q A PLAN
EQUIPMENT DESCRIPTION
Complete assembled turbine
TESTS
1. 2. 3. 4. 5.
Complete assembled generator
LAPT panel / NGR panel /AVR panel / Relay panel / Met. cum synch. panel / TCP / Battery charger panel / Aux. MCC Turbine Gauge Panel Instruments
NOTE :
1. 2. 3. 4. 5. 6. 7. 8. 1. 2. 3. 4. 1. 2. 1. 2. 3.
Visual & dimensional checks No-load run test & functional check on safety devices Vibration check Noise level check Open inspection & dynamic rotor balancing (after no-load run test) Visual & dimensional checks OCC & SCC test Over speed test Vibration check Noise level check HV test Measurement of winding resistance and insulation resistance Measurement of shaft voltage Visual & dimensional checks Operational & functional tests HV test Measurement of insulation resistances Visual & dimensional checks Range calibration Visual & dimensional checks Operational & functional tests Range calibration
1. Material test certificates from manufacturers shall be submitted for major components of turbine and other bought-out items along with supply. 2.
We have not envisaged any “customer hold point” in QAP and delivery & price quoted are on the same basis.
Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 32 of 45
SECTION-I CHAPTER 10 RECOMMENDED STEAM PURITY Technically pure steam is of such quality, that it does not cause deposits in the steam preheaters, in the fittings, heaters as well as in the turbine, which might require the intentional shut-down of the boiler or some part of the equipment, for their cleaning, outside of the normal equipment maintenance program. The recommended or limit values of the purity of steam are stated in the following table. The values are given in the maximal allowable day average concentrations. The concentration of the chlorine ions may be max. 3 µg.l-1. IDENTIFIER Unit Recommended values 0.3 Specific electrical conductivity γ at 25oC 1) µS.cm-1 -1 Silicon dioxide (SiO2) 20 µg.l Sodium and potassium (Na+ + K+) 10 µg.l-1 -1 Total Fe contents (Fe) 20 µg.l Ammonia (NH3) mg.l-1 1 Copper-total Cu 3 µg/kg 1) Measured after the flow through strong acidic H-katex. NOTE:
Limit values 1 35
The measurement of the electrical conductivity γ at 250 C (µS/cm-1) must be done without the presence of operational chemical agents, e.g. ammonia or hydrazine, which tends to increase the conductivity. This is why the measurement of specific electrical conductivity has to be done after the flow of the sample through the strong acidic H-katex, which is the filter that keeps all cations of the chemical compounds. By the filtration chemically pure water can be obtained.
RECOMMENDED STEAM PURITY – LIMITS Continuous
Start UP
Conductivity Micro-Ohms/cm at 25 0c Drum Once through SiO. ppb, max. Fe. ppb, max. Cu. ppb, max.
0.3 0.2 20 20 3
1.0 0.5 50 50 10
Na + K, ppb, max. Upto 800 PSIG 801 to 1450 PSIG 1451 to 2400 PSIG Over 2400 PSIG
20 10 5 3
20 10 5 3
NOTE : THE ABOVE DATA IS ADAPTED FROM NEMA STANDARD PUBLICATION NO. SM-23, 1991 ( R1997) SECTION 9.7 AND TABLE 9.2 Enquiry Reference: WMQ2001399 Project: M/s RA Shaikh Paper Mills Pvt Ltd. Power rating: 3.7 Mw
Page 33 of 45
