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ICHAKLKARANJI POWERLOOM MEGA CLUSTER LTD
1
1 x 3MW Captive Power Generation Plant
Layout, design, drawing, supply, erection & commissioning of 1 x 3MW Captive
Power Generation Plant including coal fired AFBC Boiler, Turbine & BOP operated
through DCS system.
The proposed Captive Power Plant will generate a gross output of 3000KW @
433V. The steam generating system for the proposed Project will consist of one new
coal fired AFBC boiler with a Maximum Continuous Rating (MCR) of 30 TPH, with the
outlet steam parameters at 47 kg/cm2 and 430C & one Extraction cum condensing
steam turbine having power generation capacity of 3000KW at Generator terminal. The
Air, Water & noise pollution generated from this plant will met all requirements of MPCB
norms.
The Plant will be designed to produce steam & power for meeting the entire
requirements of the textile process as well as plant itself auxiliaries. The total power
plant equipments should conform to relevant IBR & ISO code.
All the equipment shall be designed to achieve the best possible efficiency under
the specified operating conditions. The proposed plant will operate for design of 350
days per year. All the equipment will be designed for a minimum of 8400 hours of
operation in a year, on a continuous basis.
The instrumentation and control system for the proposed captive power plant
shall be based on Distributed Control System (DCS) philosophy. The total plant
equipments shall be operated through DCS covering the total functional requirements of
measuring, monitoring, alarming and controlling, logging, sequence interlocks and
equipment protection, etc. for the safe & efficient operation.
The Plant layout shall make optimum use of the land and facilities made
available, to minimize the capital & operating costs. The optimum arrangement of the
equipment shall be determined primarily by considering functional requirements. At the
same time, effort will be made in achieving economy of piping and electrical cables,
equipment supports & installations, providing adequate access for easy maintenance,
ensuring adequate ventilation and achieving reduced noise and vibrations.
ICHAKLKARANJI POWERLOOM MEGA CLUSTER LTD
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Plant and Site Details:
Sr. No.
Description
1 Name of the Plant Ichalkaranji Powerloom Mega Cluster Limited
2 Site Address Plot No.1-7 B, Laxmi Co-op. Industrial, Hatkanangale – 416 190. Dist : Kolhapur, Maharashtra.
3 Site Elevation 580 Mtrs. above Mean Sea Level (MSL)
4 Nearest Railway Station (30 kms. from site), Kolhapur
5 Nearest Airport Kolhapur (45 kms from site)
6 Relative Humidity % (a) Performance/Design (b) Maximum (c) Minimum
77 97 57
7 Wind (a) Design Wind Velocity (b) Direction
39 m/s as per IS:875 North east to South west
8 Seismic Co-efficient Zone III as per to be 1893 (low intense)
9 Temperatures (i) Maximum (ii) Minimum (iii) For Performance (iv) Design wet bulb (v) For Electrical Design
40 Deg. C 10 Deg. C 30 Deg. C 27.5 Deg. C 50 Deg. C
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LIST OF MAJOR EQUIPMENTS :
Sr. No.
Main Equipments Auxiliaries Includes
1. Turbine Gearbox, Alternator, Oil system (MOT, OHOT, Lub. & control Oil pumps, Emergency oil pump, coolers & oil filters), Gland sealing system, Barring Gear, Oil centrifuge machine, EOT/HOT crane
2. Air Cooled Condenser Fan, Condensate Extraction Pump.
3. Boiler Accessories & mountings, Fans, De-aerator, Boiler Feed Pump, Soot blowers, ESP, HP & LP dosing system
4. RCC Chimney
5. Ash Handling System Compressors, Ash Silo, RAV, Ash Conditioner
6. Fuel handling System Conveyer Belts, Grizzly Hopper, Vibro Feeder, Crusher, Vibro-Screen, Dust Collection System
7 WTP Plant Clarifier, Clear water storage tank, DM Plant (MGF, ACF, WBA, De-gasser, SAC,MB, UF & RO), Chemical dosing pumps, Air Blowers, DM Storage tank, Return Condensate Storage tank, Transfer Pump
8 Cooling Tower - cooling water for Boiler & Turbine Auxiliaries
Fans, Auxiliary Cooling water pump
9 DCS Controller, PMIO, Engineering & operator work station, UPS & Batteries for emergency supply,
10.
Filed Instruments Control Valves, Motorize Valves, Gauges & Transmitter cum indicators (Level, Pressure, Flow, draft, Temperature), Thermocouples, RTD
11 Electricals AVR, Synchronizing panel, PCC, MCC, VFD, Lighting DB, DCDB panel with Batteries, Transformers, AC Induction Motors, DC motor.With cable,tray & all.
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TECHNICAL SPECIFICATION AND SCOPE OF SUPPLY
A] TURBO ALTERNATOR SET (3MW – 45 Kg/cm2g) :
One turbo alternator set of 3750 KVA (3MW) at 0.8 power factor with synchronizing and control equipment.
Turbine shall be horizontal single cylinder, extraction condensing type. The
casings, stator blade carriers shall be of horizontal split type to permit us examination
of the blades without disturbing the shaft alignment. The turbine shall be solidly forged
and machined rotor with internal disk is preferred. The rotor after machining shall be
dynamically balanced. None of the critical speed of the rotor shall fall within 20%
speed of normal running speed of rotor. The rotor shall be designed to withstand the
maximum shock load during any power system disturbance such shock loading
values should be taken for the design of the gear box & alternator rotor.
The turbine shall be complete with high pressure stop and emergency valve,
steam strainer, steam traps, sentinel valve, main oil pump, auxiliary electric motor driven
oil pump, one DC motor driven stand by oil pump, ;oil cooling system consisting of two
nos oil coolers with necessary pipes and valves so that one of the two coolers can be
cleaned when the turbine is working on load, steam and oil temperature and pressure
gauges, gauge type spot mounted bearing temperature indicators for turbine and
gearbox local / direct mounted speedometers and one remote reading tachometer,
pockets with stem type thermometers in the live steam inlet and exhaust steam outlet
lines, steam flow meter for measuring steam consumption of the turbine. Necessary oil
reservoirs, duplex micronic felt / self cleaning type oil filters, oil strainer, interconnecting
oil, water and steam pipe work with valves and non-return valves, etc., and
arrangements for automatic starting of auxiliary oil pump in case of low oil pressure shall
be provided.
The turbine shall be provided with protection devices for safe operation against
over speed, excessive axial displacement, low lube oil pressure, low condenser
vacuum, high vibration, low inlet steam pressure and low inlet steam temperature.
Sr. No.
Particulars Details
1. No. of generating units 1 No.
2. Type Extraction cum condensing
3. No. of extraction & Type Single extraction controlled type
2.
Turbine Parameters Condition -1 Condition-2
a Power generation at generator terminal.
3000 KW 1000 KW
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Sr. No.
Particulars Details
b Steam pressure at turbine inlet
Max - 47 Ata, Nor- 45Ata, Min-40
Max - 47 Ata, Nor- 45Ata, Min-40
c Steam temperature at turbine inlet
Max-450 ºC, Nor-420 ºC, Min- 400 ºC,
Max-450 ºC, Nor-420 ºC, Min- 400 ºC,
d Extraction Pressure Max - 12 Ata, Nor- 11Ata, Min-6Ata
Max - 12 Ata, Nor- 11Ata, Min-6Ata
f Extraction flow 24 TPH 5 TPH
h Turbine exhaust pressure
Max – 0.16Ata, Nor- 0.1Ata, Min-0.08Ata
Max – 0.16 Ata, Nor- 0.1Ata, Min-0.08Ata
I Condenser cooling load Max -15 TPH, Nor- 3TPH
Min – 2TPH
j Performance Guarantee Power Generation – 3000KW at Generator terminal Condenser pressure at battery limit @ 15TPH
condenser load for 38C ambient. – 0.18Ata Specific Steam consumption at full load – 10.5kg/KWh
2. Gear box Details The reduction gear box between the turbine and the generator is provided having AGMA service factor 1.79 and it shall be of Double helical type. High speed flexible coupling shall be provided between turbine and gearbox. Low speed rigid coupling shall be provided between alternator and gearbox.
3. Alternator details The generator shall be of synchronous type with brushless excitation system, and shall be designed for rated voltage and frequency of 433V and 50 Hz, with corresponding variations of 10% and 5%. The generator shall have closed circuit air-cooled system with external water circuit and the windings shall have class ‘F’ insulation, with temperature rise limited to class ‘B’ insulation limits, under specified cooing water and ambient air temperatures.
1 Normal Output 3750 KVA
2 Generation voltage 0.433 10% KV
3 Power factor (lagging) 0.8
4 Duty requirement Continuous
5 Rated Speed 1500 Rpm
6 System frequency 50 5%
7 Ambient temperature for electrical equipment design, C
50 ºC
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Sr. No.
Particulars Details
8 No. of phases Three
9 Type of connection Star
10 No.of line connections Three
11 No. of Neutral connections
Three
12 Enclosure-Alternator IP 54
13 Enclosure-Exciter IP 23
14 Cooling System CACW
15 Excitation System Brush less
4
Oil system The turbine oil system shall be provided to ensure adequate supply of oil to bearing and to ensure the supply of oil for governing system and the safety devices of the turbine with control & lub oil filters & Oil coolers.
a Oil tank One main oil tank Adequate capacity with bypass centrifuge and vapour extractors shall be provided & one overhead oil tank of adequate capacity shall be provided for lubricating oil requirements in case of A.C and D.C. power failure.
b Oil pump 1 x 100% capacity (screw type) main oil pump + 1 x 100% capacity Standby aux. oil pump
c Emergency oil pump 1No. DC motor driven
d Oil Cooler Shell & Tube type vertical one working & one standby with online changing facility & having removable tube bundle for externally cleaning purpose. Tube diameter shall be not less than 19.05mm & MOC of tube Admiralty Brass (SB 111
C44300) Design temperature - 100ºC. Max. Outlet oil temperature - 48ºC @ Max. inlet cooling water temperature - 40ºC.
f Oil Filter Duplex cartridge type one working & one standby with online changing facility. MOC-SS304. Filter rating 25micron for Lube oil & 10micron for control oil.
d Centrifuge Oil Filter Machine
1 No.
5 Turbine gland sealing system
Adequately sized turbine gland sealing system shall be provided.
6 Barring gear Barring gear arrangement shall be provided for turbine starting and cooling down period. The system shall be capable of manual engagement ad automatic disengagement when the turbine speed goes above the normal bearing gear speed.
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Sr. No.
Particulars Details
7 Air evacuation system 1x100% hogging steam jet air ejector shall be provided to facilitate quick air evacuation and creation of vacuum during start up. 2x100% holding ejector shall be provided for air & non condensable evacuation and maintenance of vacuum in condenser.
8 Turbine condenser 2 modules, 2 streets Air cooled condenser shall be provided for turbine exhaust steam condensing.
1 Type 2 modules, 2 streets Air cooled condenser
2 Design dry bulb temperature
38ºC
3 Turbine exhaust steam flow rate
15TPH
4 Turbine back pressure 0.18Ata
5 Turbine exhaust steam temperature
57.37 ºC
6 Initial temperature difference (ITD)
19.37 ºC
7 Fin Pitch (No. of fins per inch Length of tube)
9
8 LMTD 10.8
9 Design Overall heat transfer coefficient
Finned : 33.02 Kcal/hr m² ºC Bare : 555.3 Kcal/hr m² ºC
10 Steam velocity in duct 59 m/s
11 Air velocity at fan outlet 2.84 m/s
12 Fouling factor Steam side : Nil Air Side : 0.0002 hr m² ºC/Kcal
13 Fan details Flow capacity : 2 x 110% Static pressure ( to be designed for max. aloowed clogged condition) : 10.08 mmWc
14 Condensate extraction pump
Flow capacity : 2 x 100% (1W + 1S)
15 ACC cleaning pump Flow capacity : 1 x 100% Head : 800 mWc
16 Cleaning system Semi Automatic
17 Material of construction Base Tube : ERW CS (SA214) Fins : Aluminum (Extruded Type) Piping, Header, steam duct & collection header : IS -2062 Gr.B Bundle side frame : IS -2062 Condensate & hotwell tank : SA 516 Gr.60 or 70 Fan Blade material : GRP / FRP
9 Condensate water system. The condensate from condensate receiver shall be pumped by 3 x 50% A.C. motor driven, vertical, multistage canister type, centrifugal condensate extraction pumps with suitable
ICHAKLKARANJI POWERLOOM MEGA CLUSTER LTD
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recirculation arrangement for pump protection.
Sr. No.
Particulars Details
14 Flash tank Sufficient capacity of Flash tank shall be provided to collect all drains of turbine & related piping.
12 Piping Design, supply, fabrication & erection Turbine related integral & external steam, water, air piping & isolation valve, fittings, drain, vent, safety valves etc with proper supports & structure as per IBR & ISO all as required. Stress analysis shall be done for all alloy high pressure steam piping & same shall be approved by Turbine OEM & provide proper spring/ hanger / fix support as per force & movement diagram.
TG set inlet steam piping from Main steam distribution header to TG inlet flange
Startup vent with pressure reducing valve with diffuser & silencer
Gland sealing piping
Extraction piping with QC NRV up to Aux. distribution header.
Ejector steam piping from Aux. distribution header.
Exhaust piping
lubrication & control oil piping
GVC & ejector piping
Required de-superheating piping from Feed pump discharge header / CEP outlet header
Instrument air piping form instrument air Receiver
Cooling water piping for oil cooler & generator from ACW pump discharge header.
Condensate piping form CEP to deaerator
All steam line drain piping up to flash tank.
13 List of Motorize valve Following steam line shall be provided with motorize operated valve 1. Main steam inlet line 2. Turbine main steam line Start-up vent 3. Extraction line isolation valve 4. Ejector steam inlet line
22 List of pneumatic operated control valve
Following steam line shall be provided with pneumatic operated control valve
1. Hood spray
2. Hot well level
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Sr. No.
Particulars Details
10 Governing system The turbine shall be provided with electronic Woodward make Governor 505E. It shall be programmable micro-processor based digital control to regulate turbine speed during normal on-load operation and during turbine run-up control. The speed regulation of the turbine (droop characteristics) shall not exceed 6% at 3MW full load of the alternator. The above arrangement facilitates connections to D C S s y s t e m f o r a u t o m a t i c control systems, alarm systems, data processing systems, switches and indicators.
Suitable speed feedback signal system arrangement to facilitate run-up speed control from barring speed as well as speed/load control at rated speed shall be provided.
Safety interlocks & protections
The following safety devices shall be provided for the turbine.
Over speed trip with audiovisual alarm.
Low oil pressure trip with audiovisual alarm.
The turbine should trip when the alternator ACB trips due to differential Protection.
Remote operated manual trip with audiovisual alarm.
Manual trip handle on turbine.
Axial movement trip.
High exhaust pressure trip.
High rotor bearing temperature trip.
High gearbox bearing temperature trip.
Electronic over speed trip with sensing from speedometer.
The system shall observe all critical process parameters of the turbine Continuously with following provisions :
Monitoring of winding & bearing temperature, continuously.
Continuous Vibration monitoring system shall be provided for turbine, Gearbox & alternator bearing vibration alarm & tripping. Tripping signal to governing system as well as facility to communicate with DCS system.
Audio / visual ALARM & TRIP signals.
ICHAKLKARANJI POWERLOOM MEGA CLUSTER LTD
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Sr. No.
Particulars Details
Set points adjustable separately for winding & bearing.
Immune to noise pollution, radiation & electromagnetic interference.
Ultra sensitive & accurate sensors.
Built-in safety fuses & fail safe logic.
Changeover relay contact outputs to activate buzzer or trip the turbine / motor.
4 TG set Instrumentation
All field instruments local gauges, switches as well as electronic smart transmitters shall be provided for pressure, temperature, level, flow required for monitoring, operation & controlling purpose. Instrumentation and Controls provided shall be suitable for hooking to the DCS system. Submission of all the control philosophy & interlock / start / stop procedure in the form of logic / P&I diagram so that the same will be incorporated in the Distributed Control System.
1. Supply of all field instruments (transmitters, local temperature gauges, local pressure gauges, thermocouples, flow nozzles / Orifice plates, etc.) that are required for the monitoring / control of the various parameters for the operating of turbine / auxiliaries.
2. Supply of all the final control elements (ON/OFF valves, control valves, power cylinders, I/P converters, etc.) taking in to account the precision of control.
3. Supply of all the field instruments such as temperature switches, pressure switches, flow switches, level switches, limit switches, etc. for the purpose of safety interlock and start / stop operation.
4. Provision of serial communication facility (RS 485 in MODBUS protocol) in the VMS, HMI etc.
5. Instrumentation cables, cable tray and other accessories required for signal transmission from field instruments, all final control elements, Sellers panel and JB to purchaser’s DCS marshalling rake. Powering of Sellers supplied equipments from PURCHASER’s Power Distribution Panels.
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Sr. No.
Particulars Details
6. Submission of input and output list for the
various analog and digital signals.
7. Instrumentation control cables tray and other accessories required from Motorised valves with integral starters to PURCHASAE’s DCS marshalling rack.
Wherever applicable, instrument junction boxes shall be provided by the Seller. Drawing shall be furnished separately for wiring and tubing for showing all instrument interface details: 20% spare terminals shall be available in the Junction Boxes for future expansion.
15 Insulation
The insulation scope includes the supply, application and finishing of the complete thermal insulation and its protective covering for pipes, valves, fittings including bends, equipment, tanks & vessels, ducts & steam generator casing etc with
working temperature above 60C
All exposed portions of the equipment and
piping which operate at temperatures of 60C and above, shall be thermally insulated so that the temperature on the outer surface of the cladding
shall not exceed by more than 5-10C above ambient temperatures. The specified insulation thickness shall not include the thickness of wire netting, finishing cement or any other finishing or weatherproofing application. Insulation shall not fill the contours of the expansion bellows. In refractory walls suitable expansion gaps shall be provided at regular intervals.
14 Terminal points
1 45Ata pressure Steam Main steam distribution header isolation valve to turbine inlet flange
2 11 Ata Steam Up to Auxiliary steam distribution header.
3 Exhaust Steam 0.1Ata Up to Air cooled condenser
4 Steam for air ejectors From Auxiliary steam distribution header isolation valve.
5 Gland sealing piping Tapping from H.P. line to gland sealing and from gland sealing to gland condenser outlet is included.
6 Steam at any other pressure
Steam of any other pressure for turbo- alternator use if required, completely in Contractor’s scope of supply
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Sr. No.
Particulars Details
6 Electrical power Purchasers PCC
7 Cooling water for condenser, air and oil cooler etc.
From Auxiliary cooling water pump discharge header
8 Condensate from turbine condenser
Inlet to boiler de-aerator after steam ejectors and gland steam condensers
9 De- superheating water Tapping from boiler feed pump discharge header / CEP outlet
10 Turbine & steam piping Drains
Contractor shall collect all drains to flash tank above ground level outside powerhouse building.
Outlet flange on above tank shall be Terminal point for Contractor.
11 Lubricating and control oil piping
All piping from Contractor’s main oil tank to inlet of consumption points.
12 Instrumentation Air for control valve
From instrument air receiver
13 Instrumentation and Controls
DCS marshalling panel installed in purchasers centralized control room. All locally mounted instruments on or near by the TG set entirely in seller’s scope of supply and shall be suitable to hook up with the DCS system supplied by the Employer.
Complete interconnection viz. Cables, wiring, fittings, supports etc is in sellers’s scope of supply .
14 Exclusions
1 Civil All civil works including equipment foundations, buildings are excluded from the scope of Contractor. However, detail loading data, foundation details and drawings are to be provided by the Contractor.
3 Electrical 1. Cabling between Contractor’s MCCs and Employer’s PCCs
2. Illumination System 3. Remaining part L.T. Switch gear after terminal
point 4. Transformers
ICHAKLKARANJI POWERLOOM MEGA CLUSTER LTD
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B] BOILER :
The design of boiler shall be of Atmospheric fluidized bed combustion (AFBC) Bi-drum, natural circulation, radiant furnace with water cooled membrane walls, two stage super-heater with inter-stage de-super heaters and balanced draft. Boiler shall have all its other accessories like economizer and air pre-heater.
The boiler pressure parts comprising of economizer, water walls, modules banks and superheated tubes will be made of seamless steel tubes of required size and material specification depending upon the location. Supplier should specify the make, material of construction, size & numbers.
The boiler shall be designed for outdoor operation. The boiler shall include an electro-static-precipitator along with dense phase ash handling system and a RCC chimney which will satisfy the environmental norms.
Sr. No.
Particulars Details
1. Number of Boiler 1 No.
2. Construction As per IBR its latest amendment
3. Type of Boiler AFBC, Bi-drum membrane wall type water tube natural circulation (Top Supported)
4.
Boiler Working Parameters
1 Boiler steaming capacity at MCR
30 TPH
2 Peak generation 110% of MCR for ½ hr.
3 Working Steam pressure at Super heater outlet
47 Ata
4 Working Steam temperature at Super heater outlet
430 10 ºC at MCR
5 Design Pressure To be specified by supplier
6 FW temperature at Economiser Inlet
125 ºC
7 Flue gas outlet temperature leaving last heat recovery unit (APH)
140 ºC
8 Main steam temperature Control Range at the Main steam stop valve outlet
50 to 100% MCR
9 Excess air % theoretical air
Not to exceed 35%
10 Boiler efficiency Not less than 82% on Fuel GCV of Coal (Performance testing of the boiler - ASME PTC4 -1998 by Indirect heat losses method)
11 Performance guaranty 30TPH MCR @ 47Ata, 430 10 ºC & flue gas
outlet temperature 140C at last heat recovery unit i.e. Air pre-heater. Control range – 50% to 100% MCR, LOI in Ash = <5% weight basis
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Sr. No.
Particulars Details
5 Heating Surfaces
1 Furnace Not less than 460M2
2 Inbed Coils Not less than 60M2
3 Boiler Bank Not less than 150M2
4 Economiser Not less than 465M2
5 Super heater Not less than 375M2
6 Air Heater Not less than 1400M2
5.
Feed & Boiler Water Quality Requirements
Feed Water Quality Boiler Water Quality
1 pH value at 25 deg.C 8.5 – 9.2 10-10.5
2 Oxygen 0.007 PPM NT
3 Hardness Nil Nil
4 Total Iron Nil Nil
5 Total Copper Nil Nil
6 Total Silica 0.02 PPM 2.5 PPM
7 Residual Hydrazine (Max)
0.02 PPM -
8 Residual Phosphate (Max.)
- 15-25 PPM
9 Specific electric conductivity at 25 deg. C
0.5 PPM 150 PPM
10 Total Dissolved Solids (Max.)
0.15 PPM 100 PPM
6. Steam Purity The boiler shall be capable of supplying uninterrupted steam at the MCR rating & also at peak generation with the following steam purity levels.
1 Total Dissolved Solids (Max.)
0.1 PPM
2 Total Silica (Max.) 0.02 PPM
7. Fuel Used
a Main Fuel - Coal Boiler shall be designed for 1) 100% Indonesian Coal 2) 70% Indonesian Coal + 30% Indian Coal 3) 70% petcoke + 30% Indian Coal
Coal Size 100% < 6mm, 30% < 3mm, 10% <1mm
Fuel Ultimate Analysis
Unit Indonesian Coal Indian Coal Petcoke
1 Carbon % Wt 58.96 34.20 86.50
2 Hydrogen % Wt 4.16 2.75 3.18
3 Oxygen % Wt 11.88 7.25 1.93
4 Nitrogen % Wt 1.02 2.50 0.39
5 Sulphur % Wt 0.39 0.30 5.94
6 Ash % Wt 13.99 45.00 0.78
7 Moisture % Wt 26 8.00 1.08
8 GCV Kcal/kg 5400 3500 8010
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b Start-up Fuel Charcoal sprayed with Diesel fuel
c Bed Material Material – Crushed refractory Size – 0.6 to 1.85mm Bulk density – 1000 to 1050 Kg/m³ Fusion Temp. – > 1300ºC Shape – Sub Angular / Spherical
8 Main Equipments of Boiler
1 Atmospheric fluidized bed
Boiler shall be provided with Atmospheric fluidized bed combustion having stainless steel air nozzles for primary air with inclined air holes to prevent bed material re-entry hence eliminating back shifting & designed for higher pressure drop to achieve higher turndown ratios for better operational flexibility. Design shall be of uniform temperature distribution in bed and to have agitating characteristic of fluid bed ensures optimum combustion.
2 Fuel feeding system
Imported coal / Indian Coal feeding system consisting of bunker of 60 M3 coal storage. One no. Emergency bunker evacuation chute, isolation gate (4 nos.) at bunker outlet, 2 mm thick SS lining for conical portion of the bunker, nozzle on the bunker for nitrogen inerting 4 nos. Under bed fuel feeding system using drag chain / rotary feeders with drive suitable for VFD. 3 nos. connecting chutes. The Coal feeding system shall be suitable for smooth flow of high moisture (40%) fuel to furnace & Normal Operating speed of coal feeder shall be 65% during boiler MCR.
3 Drum The boiler will be provided with two drums of fusion-welded construction and sized to keep the drum steam loading rate low and enable boiler operation with rapid load swings/fast response to load changes. The steam drum of the boiler will be provided with suitable internal fittings comprising cyclones and scrubbers to ensure steam purity with silica content not exceeding 0.02 ppm.
4 Furnace The Furnace shall be membrane wall construction. Water wall tubes shall be arranged to cool the front, roof, sides and rear walls of the combustion chamber. The water walls are made up of tubes with membrane wall type construction, communicating with headers at top and bottom. The combustion chamber & Furnace height of the boiler shall be suitably sized to give sufficient residence time for efficient combustion of fuel within the chamber itself with minimum un-burnt carbon loss. Boiler design is fuel specific keeping optimum furnace exit gas temperature with respect to ash fusion temperature of the specified fuels, thereby eliminating fouling and deposition.
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Sr. No.
Particulars Details
8 5 Boiler bank Boiler bank shall be provided without baffles.
6 Superheater The boiler will be provided with primary super heater and secondary super heater. The super heater tubes will be of carbon alloy steel depending upon the location. A spray type attemperator (Fixed or variable orifice type) will be provided in between primary & Secondary superheater to control the final steam
temperature 430C ±5
7 Economiser The boiler is provided with economizer located in the second pass, which absorbs a major portion of sensible heat. The tubes are made of carbon steel. The economizer shall be designed for an inlet feed water temperature of 105 deg. C.
8 Boiler Mounting Following mountings are to be provided on the boiler.
Pressure Gauge, Safety valves ( 2nos. on drum & 1No. on Superhetaer, 1 no. on soot blower piping), Water level indicators, Feed water station control valve, start-up vent, Soot blower steam valve, Steam stop valve & NR valve, Air vent, Blow down valve, All necessary drains and Any other mountings which are necessary. Suppliers shall specify the size and quantity.
9 Soot blowers Adequate quantity of sequential ly operated motorize soot blowers shall be provided in super heater, modular bank and economizer region for efficient on – load cleaning of heating surfaces. Soot blower shall be provided with pressure reducing control station & safety valve.
10 Blow Down Arrangement
Continuous blow down arrangement to Steam drum & Intermediate blow down arrangement to water drum shall be provided as per IBR / ISO complete with all piping and connected to the Continuous blow down tank & Intermediate blow down tank respectively. The flash steam of CBD tank to be supplied to de-aerator tower. (Working pressure – 2.75Ata)
11 Main steam distribution header & Auxiliary steam distribution header
Main steam distribution header & Auxiliary steam distribution header shall be provided as per IBR / ISO complete with inlet / outlet isolation valves.
Main steam distribution header
Auxiliary steam distribution header
Working Pressure 47Ata 11Ata
Working temperature 430 10 ºC 250 10 ºC max.
Material SA 213 Gr.T11 or P11 SA 106 Gr B
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Sr. No.
Particulars Details
12 Air heater (APH) The air heater shall be arranged as the last heat recovery section shall be recuperative type with flue gas flowing inside the tubes and the combustion air flowing over the tubes. The air heater shall be arranged with the tubes in the vertical direction. Air heater is not arranged directly below the economizer. It is off set with a separate hopper which ensures better maintenance of air heater. APH bypass duct shall be provided for FD air with pneumatic damper control for controlling ESP inlet temperature at partial load of boiler.
13 Steam coil Air pre-heater (SCAP)
Steam coil air pre-heater shall be provided to
preheat FD air for maximum T30C at APH inlet to avoid due point corrosion & ash choke-up of starting APH tubes. The maximum air pressure drop at SCAP shall be not more than 25mmWc.
14 Cinder recovery system For improving the combustion efficiency and to prevent unburnt carbon carry over to ESP, Boiler shall be provided with cinder recovery system. The unburnt coal taken from bottom of drum hopper & pneumatically re-injected in to the boiler. The CR system shall take air from the SA from Air heater outlet. The bottom drum shall be provided with 2mm S.S. lining for free flow of ash.
9 Draft fans The capacity and head of FD & PA fan will be selected considering maximum air that would be required for any of the fuel firing modes. In the same way, ID fan will also be selected based on the maximum flue gas generated in any of the fuel firing modes under consideration. All fans shall be provided with Direct coupled VFD as well as pneumatic damper control. For FD & PA fan Blade material shall be Sailma:350 & All ID Impeller material shall be Sailma:350.
1 F.D. Fan 2 x 50% @ 45ºC cold air
2 P.A. Fan 2 x 100% @ 180ºC hot air suction After Air pre heater. Mechanical design temperature - 250ºC
3 I.D. Fan 2 x 60% @ 170 ºC flue gas. Mechanical design temperature - 250ºC
10 Flue gas Cleaning system The flue gases leaving the boiler will be passed through an Electrostatic Precipitator (ESP) to remove the dust particles. The dust content in the flue gas downstream of ESP will be limited to 30mg/Nm³ with all fields in service. The ESP unit will be two field provided with transformers, rectifiers and controls. The fly ash particles collected in the hoppers will be in dry form to facilitate transportation by means of dense phase conveying system to feed
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the Ash Silo (MS) of adequate capacity.
Sr. No.
Particulars Details
1 Gas flow 32 Am3/Sec.
3 Temperature 160 to 180 ºC
4 Maximum inlet Dust load 18 Gm/Nm3
5 Outlet Emission < 30 Mg/Nm3
6 No. of Fields 2 Nos.
7 Velocity through ESP 1.04 M/s
8 Treatment time 8.8 Sec.
9 Migration Velocity 11.19 Cm/s
10 Efficiency 99.23%
11 Number of Hoppers. 2 Nos.
11 Ash Handling System The ash handling system shall comprises of : • Bed Ash – Manual Drain • Dense Phase ash handling system for Fly ash
1 Fly ash collection The fly ash from Air pre-heater, Economiser & ESP hoppers shall be conveyed by dense phase ash handling system equipments to fly ash silo. The flash collected in the Surge hoppers shall be conveyed to the fly ash silo through MS pipes. Conveying air is from the air receiver of dedicated oil injected screw type air cooled compressors (1W+1S).The fluidization of ash hoppers and ash silo shall be done through the same conveying air.
2 Bulk Density of Ash 800 kg/m³ for capacity calculation & 1100 kg//m³ for load calculation
3. Ash % in coal considered for Design
Max. 20% of Fuel
4. Fly ash silo storage capacity 24 Hrs.
12 Bed material Handling System
Handling system suitable for Bed Material - Crushed refractory, Size – 0.6 to 1.85mm & Bulk density – 1000 to 1050 Kg/m³.
13 Chimney The stack shall be of Reinforced Cement Concrete (RCC) construction, with internal firebrick lining up to 20Mtr height of the stack. The air gap between the lining and the RCC shall be properly maintained with adequate air inlet and vent holes in the shell. The stack shall be provided with lightening protection and aviation warning lights, as per acceptable standards. Flue gas sampling hole shall be provided with platform & railing for installation of on line stack monitoring system. Ladder shall be provided through height of chimney for maintenance purpose of aviation lamps.
1 Diameter 2.25Mtr
2 Height 50Mtr or as per MPCB norms.
14 Boiler ducting All cold & hot air ducting shall be provided with proper
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stiffeners, supports & expansion provisions.
1 Cold air ducting Material & thickness
IS 2062 / 5mm
Sr. No.
Particulars Details
2 Cold air ducting expansion bellow
Metalic SS304
3 Hot air ducting Material & thickness
IS 2062 / 6mm
4 Hot air ducting expansion bellow
Single Louvre CRCA Sheet 1.6Thk
15 Boiler structural’s All operating equipments shall be provided with proper operating platforms, approaches & railing. Platform & stairways width shall be as per SIO standard or minimum 1000mm & All stairways
maximum inclination angle shall be 45
16 De-aerator The de-aerator will be of vertical, direct contact, spray cum tray type. The steam for de-aerator will be drawn from the extraction of turbine during normal operation. Condensate from the condenser hot well will be supplied to the de-aerator. The De-aerator will be a constant pressure unit. The make-up requirement of de-aerator will be from de-mineralized water tank.
a Operating pressure 2.75 Ata
b Operating temperature 130 ºC
c Max. de-aeration capacity 40 TPH
d Storage tank Capacity 20 M³
17 Boiler Feed Water Pumps 3 Nos. of 65% capacity, multistage, e l e c t r i c motor driven boiler feed pumps, (2W+1S). The capacity of these pumps will be suitable for 110% peak rating of boiler output including the spray water requirement to the attemperator. This pump will generate necessary head to overcome the system resistance and will be able to s u p p l y f e e d w a t e r e v e n u n d e r a b n o r m a l operating conditions. The feed water temperature at the feed
pump outlet shall be 130C
18 HP & LP Chemical dosing System
Chemicals will be dosed into the boiler feed water circuit at appropriate points for control of boiler water quality. Two types of dosing systems include HP and LP dosing systems will consist of tanks for solution preparation, pumps and agitators with motors. Dosing Chemicals used for Hp dosing System will be Tri Sodium phosphate & for LP dosing will be Hydrazine (Dosing pumps - 1W+1S)
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19 PRDSH station Two nos. of PRDSH system shall be provided one for textile process & another for De-aerator complete with isolation valve, bypass valve, pressure & temperature control valve with safety relief valve.
Sr. No.
Particulars Details
1 PRDSH stations For Textile process For de-aerator
2 Up-stream pressure & Temperature
47 Ata / 430 ºC 11 Ata / 220 ºC
3 Down-stream pressure & Temperature
11 Ata / 220 ºC 2.75 Ata / 130 ºC
4 Steam flow at PRDSH outlet
10 TPH 3 TPH
21 Piping Design, supply, fabrication & erection Boiler related integral & external steam, water, air piping & isolation valve, fittings, drain, vent, safety valves etc with proper supports & structure as per IBR & ISO all as required. All alloy high pressure steam piping shall be stress relieved & provided with proper spring/ hanger / fix support as per force & movement diagram & shall be approved by Boiler OEM.
Main steam piping from boiler main steam stop valve to main steam distribution header
Start-up vent with pressure reducing valve with diffuser & silencer
Safety valve blowdown piping with silencer
Soot blower piping
Feed water piping from deaerator
Steam Piping along with PRDSH form main steam distribution header to Aux. steam distribution header & Further piping up to textile process header.
Steam Piping along with PRDSH from Aux. steam distribution header to de-aerator inlet
Make-up water piping from DM tank / condensate tank outlet connection to de-aerator
Return condensate line from textile process plant to condensate storage tank at power plant.
Required de-superheating piping from Feed pump discharge header.
Flash steam connection from CBD tank outlet to De-aerator inlet
CBD & MBD piping up to CBD & MBD tank.
CBD tank outlet drain to IBD tank.
Boiler water MBD outlet to IBD tank.
All water wall top & bottom header, Economiser header, Superheater header, soot blower drains to IBD tank.
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IBD tank outlet to WTP Neutralizing pit.
Instrument air piping form instrument air Receiver
Required Cooling water piping from ACW pump discharge header.
All steam line drain piping up to flash tank.
Sr. No.
Particulars Details
22 List of Motorize valve Following steam line shall be provided with motorize operated valve 1. Main steam inlet 2. Boiler Start-up vent 3. Feed water control station isolation valve 4. Feed pump discharge valve.
22 List of pneumatic operated control valves
Following steam line shall be provided with pneumatic operated control valve 1. Boiler Start-up vent 2. Feed water control station for main & bypass-
100% 3. Feed water control station 30% 4. Soot blower pressure control 5. Main steam temperature control 6. PRDSH stations - 2 Nos. (for process &
deaerator) - Pressure control & temperature control
7. De-aerator D.M. make
23 Safety interlocks & protections
The following safety interlocks & protections shall be provided for the Boiler.
Boiler steam drum water Level low
Furnace pressure high & low
ID fan trip / respective FD, SA & Fuel feeding trip.
De-aerator level low for BFP trip
BFP suction DP high
24 Boiler Instrumentation
All field instruments local gauges, switches as well as electronic smart transmitters shall be provided for pressure, temperature, level, flow required for monitoring, operation & controlling purpose. Instrumentation and Controls provided shall be suitable for hooking to the DCS system. Submission of all the control philosophy & interlock / start / stop procedure in the form of logic / P&I diagram so that the same will be incorporated in the Distributed Control System.
1. Supply of all field instruments (transmitters, local temperature gauges, local pressure gauges, thermocouples, flow nozzles / Orifice plates, etc.)
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that are required for the monitoring / control of the various parameters for the operating of Boiler / auxiliaries.
2. Provision of serial communication facility (RS 485 in MODBUS protocol) in the TR set, rapper controllers of the ESP.
Sr. No.
Particulars Details
3. Supply of all the field instruments such as temperature switches, pressure switches, flow switches, level switches, limit switches, etc. for the purpose of safety interlock and start / stop operation.
4. Instrumentation cables, cable tray and other
5. accessories required for signal transmission from field instruments, all final control elements, Sellers panel and JB to purchaser’s DCS marshalling rake. Powering of Sellers supplied equipments from PURCHASER’s Power Distribution Panels.
6. Submission of input and output list for the various analog and digital signals.
7. Instrumentation control cables tray and other accessories required from Motorised valves with integral starters to PURCHASAE’s DCS marshalling rack.
8. Wherever applicable, instrument junction boxes shall be provided by the Seller. Drawing shall be furnished separately for wiring and tubing for showing all instrument interface details: 20% spare terminals shall be available in the Junction Boxes for future expansion.
25 Insulation
The insulation scope includes the supply, application and finishing of the complete thermal insulation and its protective covering for pipes, valves, fittings including bends, equipment, tanks & vessels, ducts & steam generator casing etc with
working temperature above 60C. All exposed portions of the equipment and
piping which operate at temperatures of 60C and above, shall be thermally insulated so that the temperature on the outer surface of the cladding
shall not exceed by more than 20C above ambient temperatures. The insulation material shall be of LRB mattresses
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of density 120Kg/M³ & 24SWG aluminum cladding. The specified insulation thickness shall not include the thickness of wire netting, finishing cement or any other finishing or weatherproofing application. Insulation shall not fill the contours of the expansion bellows. In refractory walls suitable expansion gaps shall be provided at regular intervals.
Sr. No.
Particulars Details
14 Terminal points
1 Fuel Bunker inlet flange
2 Boiler Flue gas outlet ducting
Up to Chimney inlet flange
3 Steam 1. Up to main distribution header, Auxiliary steam distribution header.
2. From Auxiliary steam distribution header With PRDSH Piping to Textile process header & De-aerator inlet.
4 Steam at any other pressure
Steam of any other pressure for turbo- alternator use if required, completely in Contractor’s scope of supply
5 Electrical Power Purchaser’s PCC
6 Cooling water for Boiler Feed water pump & coal spreader
From Auxiliary cooling water pump discharge header
7 DM water From DM water tank outlet connection
8 Return condensate Return condensate line from textile process plant to condensate storage tank at power plant.
9 De- superheating water Tapping from boiler feed pump discharge header
10 All steam & water header Drains
Up to IBD tank
12 instrument air for control valves
From instrument air receiver
13 Instrumentation and Controls
DCS marshalling panel installed in purchasers centralized control room. All locally mounted instruments on or near by the Boiler entirely in seller’s scope of supply and shall be suitable to hook up with the DCS system supplied by the Employer.
Complete interconnection viz. Cables, wiring, fittings, supports etc is in sellers’s scope of supply .
14 Exclusions
1 Civil All civil works including equipment foundations, buildings are excluded from the scope of Contractor. However, detail loading data, foundation details and drawings are to be provided by the Contractor.
2 Electrical 1.Cabling between Contractor’s MCCs and Employer’s PCCs
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2.Illumination System 3.Remaining part L.T. Switch gear after terminal point 4.Transformers
3 Steam piping 1. From main steam distribution header to Turbine inlet flange.
2. Turbine ejector steam piping from Aux. steam distribution header.
C] BALANCE OF PLANT :
1] FUEL HANDLING SYSTEM :
The coal handling plant shall be designed for capacity of 20TPH & 8Hrs of operation to
meet 24Hrs boiler consumption. The coal shall be received and stacked in coal storage
shed. Coal shall be reclaimed from the shed and conveyed to the crusher 2 x 100% and
vibrating screen 2 x 100% suit the boiler requirement and then conveyed to boiler
bunker with proper dust collection system. The system shall be suitable for smooth flow
of high moisture (40%) Coal. Shuttle conveyer shall be provided at bunker top for proper
distribution of coal in bunker. Magnetic separator shall be provided before coal feeding to
crusher to spate iron material in coal to avoid system damage. Online coal weighing
machine shall be provided on crushed coal handling belt for coal measurement.
Proposed Scheme shall be : Grizzly Hopper → Vibro Feeder → Vibro-Screen →
Crusher → Dust Collection System → Boiler Coal Bunker
Sr. No.
Particulars Details
1 No. of Streams 1 No.
2 Hard Groove Index for Coal 45- 50 SGI
3 Size of coal for system design
Less than 1mm = <20%, 0 to 50mm = 60%, Above 50mm = 20%
4 Density of Coal 800Kg/M³ for capacity calculation & 1100Kg/M³ for Load calculation
5 Crusher capacity & type 20TPH, Type - Impact / Roller Mill, Inlet Size of Coal- 150mm Max.
6 Vibratory screen capacity 20TPH
7 Size of Prepared coal 0 – 6 mm
8 Plant operating hours 8Hrs.
9 Type of conveying system Belt conveyors / Bucket Elevators based on Optimized Layout.
10 Capacity of Total coal handling system
20 TPH
11 No. of dust collecting points 2 Nos. One at Crusher house & one is at Boiler Coal Bunker.
12 Gear box Type- Planetary, Service Factor – 2
13 Conveyer belt Type - N/N, Rating- 315/3, No of Plies- 3, Cover
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Grade - M24
14 Online Coal weighing machine
Type : Online Measurement, No. of load cell – 4Nos., Range : 0 Kg to 40kg.
15 Instrumentation All field instruments like ZSS, pull cord, belt sway, equipment run feedback monitoring, operation & controlling purpose shall be provided for total fuel handling system & suitable for hooking to the DCS system.
Sr. No.
Particulars Details
15 Terminal Points
1 Fuel From coal storage yard to Bunker inlet flange.
2 Electrical Purchasers PCC
3 Instrumentation & control
DCS marshalling panel installed in purchasers centralized control room. All locally mounted instruments on or near by the coal handling equipments entirely in seller’s scope of supply and shall be suitable to hook up with the DCS system supplied by the Employer.
Complete interconnection viz. Cables, wiring, fittings, supports etc is in sellers’s scope of supply .
2] WATER TREATMENT PLANT :
Single Stream Suitable Water Treatment plant with DM Water Storage tank, necessary piping. The water treatment system proposed plant will include pre-treatment plant i.e. High rate solid contact clarifier for supply of makeup cooling water circuit and other uses, followed by De-mineralized (DM) plant in combination with RO or UF for supply of DM water for boiler make up in the de-aerator.
Adequately sized neutralizing pit shall be provided near the softening / DM water plants for collecting the discharges from the softening / DM water plants and for effectively neutralizing the same, before pumping to effluent treatment system.
Proposed scheme shall be combination of DM + RO or DM +UF suitable to process our site raw water parameters which met required parameters of DM water required for Boiler. Supplier shall be confirmed raw water parameters while designing the water treatment plant.
High rate solid contact clarified → Clear water storage tank → Multi grade filter → DM + RO or UF plant → D.M. water storage tanks.
Quality of the treated water at the outlet of the DM plant shall be follows:
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Sr. No.
Particulars Parameters
1 pH value at 25 deg.C 8.5 – 9.2
2 Oxygen 0.007 PPM
3 Total Hardness Nil
4 Total Iron Nil
5 Total Copper Nil
6 Total Silica 0.02 PPM
7 Specific electric conductivity at 25 deg. C
0.5 PPM
8 Total Dissolved Solids (Max.) 0.15 PPM
9 Oil Nil
WTP Equipment Details:
Sr. No.
Particulars Details
1 High rate solid contact clarified RCC constructed, Capacity – 45M³/Hr
2 Clear water storage tank RCC constructed, Capacity – 45M³/Hr
3 D.M. Plant + RO or UF plant Capacity - 15 M3/Hr, O.B.R. (Output Between Regeneration) 360M3 (24 hrs each).
4 DM Water Tank M.S. fabricated round tank - 1No., Capacity = 100 M³ (with internally Epoxy coating)
5 Ion Exchange Tanks Provided with internally Rubber lining & chemical resistant paint in outside.
6 Interconnecting Piping Stainless Steel & Seamless piping Provided with internally Rubber lining & chemical resistant paint in outside.
7 All dosing tanks Shall be of High Density Poly Ethylene (HDPE) construction and shall have a capacity of 125% of 24 hours requirement. Dosing tanks shall be provided with motorized agitator, wherever vigorous agitation is required and where solids / flakes are dissolved.
8 Chemical Dosing Pump Shall have two dosing pumps (one working and one stand by). The stroke length of all dosing pump shall be adjustable when the pump is in operation.
7 Condensate Storage tank M.S. fabricated round tank - 1No., Capacity = 100 M³ (with internally PolyGlass VEF Coating)
8 D.M. Storage tank M.S. fabricated round tank - 1No., Capacity = 100 M³ (with internally rubber lining)
9 Transfer Pump The DM & condensate water will be supplied from DM / condensate storage tank to de-aerator tank through Transfer pump. 1 x 100% Capacity (1W+1S)
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2] COOLING TOWER FOR BOILER & TURBINE AUXILIARIES:
One RCC construction with closed fore bay cooling tower shall be provided for Turbine &
boiler auxiliaries like oil cooler, generator air cooler, boiler feed pump, coal feeder etc.
Sr. No.
Particulars Details
1. Type Induced draft, Counter flow, RCC
2. Design Wet bulb temperature 27.5 ºC
3. CT Approach 5 ºC
4. CT Range 9 ºC
5. Number of working cells 2 (Both Working) m3/hr
7. Number of ACW pumps 2 x 100% (1 W + 1 S)
8. Relative humidity 70% 9. Total cooling load To be furnished by boiler & TG set Supplier 10. Construction Features Fills : Films flow type
Drift eliminator : Cellular type PVC
Fan : Axial flow propeller type
Fan blade : FRP type with epoxy resins
Fan drive : Energy efficient motors with VFD
Spray nozzle : Low pressure non clog
Gear box : Spherical bevel cum helical
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3] COMPRESSED AIR SYSTEM FOR INSTRUMENTATION:
The compressed air system will provide supply of compressed air having suitable pressure and quality for instrument and Control purpose use (Instrument Air) and for General Station use (Plant Air). The compressed air system starts from inlet of the filter silencer of respective compressor and terminates at the Instrument Air Compressor Main features of Compressed Air System
Sr. No.
Particulars Details
1 Compressor
1 Type of compressor Lubricated air cooled
2 No. of compressors 2(1W + 1S)
3 Capacity To be furnished by boiler & TG set Supplier
4 Delivery pressure in bar 7.7
5 Design Ambient temperature
30 deg C
2 Air Drier: 2 x 100% (1W + 1S)
1 Type of drier Heatless, Alumina desiccant
2 No. of drier 1 (one no)
3 Delivery pressure in bar 7.7
4 Atmospheric dew point temperature
40 deg C
3 Air Receiver: 1 (one no)
1 Type of drier Vertical Cylindrical
2 Capacity of Receiver 2 m³
3 Delivery pressure in bar 10.5
4 Material of construction SA 516 Gr 70
5 Design standard IS 2825
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4] PRESSURISATION & VENTILATION SYSTEM
Sr. No.
AREA SYSTEM OFFERED
1 Turbine hall Wet Pressurized Ventilation system Based on Heat Load
2 Switchgear & MCC room in TG building
Wet Pressurized Ventilation system Based on Heat Load
3 Cable gallery Pressurization: 2mmWC above atmospheric pressure Exhaust fans and louvers
4 Battery room Exhaust fan Based on Heat Load
5 Water treatment plant equipment room
Exhaust fan
6 WTP MCC room and Lab room Exhaust fans
7 Raw water cum fire water pump house
Exhaust fans
8 FHS MCC room Exhaust fans
9 ESP/ AHS MCC room Exhaust fans
10 Compressor / DG set room Exhaust fans
11 VFD Panels Duct with thermal Insulation will be provided from the top flange of the VFD panels. From the duct hot air hall be exhausted by tube axial fans.
12 Total cooling load To be furnished by boiler & TG set Supplier 5] AIR CONDITIONING SYSTEM
Sr. No.
AREA SYSTEM OFFERED
1 TG building control room Air cooled package type
2 Office room Split /Window type
3 Temperature maintained inside the rooms
22 + / - 1 deg C
4 Relative humidity maintained inside the rooms
50+ / - 5% RH
5 Total cooling load To be furnished by boiler & TG set Supplier
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6] FIRE FIGHTING SYSTEM The Fire fighting system for the power plant is to provide for detection, alarm, containment and Suppression of fire. The fire protection system shall be designed the satisfy the following : • To provide facilities for fighting all types of fire that can occur in plant
• To equipment the plant for fighting at least two simultaneous fires
• To meet the basic minimum requirement s of TAC
• To meet the basic requirements for approval by the controller of explosives (CCOE).
It shall comprise of the following :
• Fire hydrant system
• High velocity water spray system
• Automatic Fire detection and alarm system
7] EOT Or HOT crane for Power house The EOT crane shall be installed in the TG hall and shall serve the entire bay length for
maintenance purpose.
Sr. No.
Particulars Details
1 Main hoist capacity Maximum maintenance weight of single component in TG Package (Shall be provided by supplier)
2 Auxiliary hoist capacity 3 MT
3 Main hoist lift Approx. Suitable to TG Building
4 Crane span Suitable to TG Building
5 Length of runway Suitable to TG Building
6 Class of crane Class-II as per IS:807
7 Type of duty Intermittent / Maintenance
IMPORTANT NOTE:-
1. Only Civil work is in IPMC Scope. However excution of civil work will be under supervision of bidder as per their requirement.
2. All IBR and lisioning work in bidder Scope. 3. Earthing and lightning protection each equipments and surrounding in
bidders scope.