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WORKS TO BE COMPLETED BY M/S BGR FOR LIGHT UP OF

BOILER

1. RAW WATER SYSTEM

2. PRETREATMENT PLANT

3. AUXILIARY COOLING WATER SYSTEM

4. DM WATER SYSTEM

5. LDO AND HFO SYSTEM

6. SERVICE AND INSTRUMENT AIR SYSTEM

7. AIR CONDITIONING

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8. ASH HANDLING PLANT

9. FIRE PROTECTION SYSTEM.

10. ELECTRICAL WORKS OF BOP EQUIPMENT

RAW WATER SYSTEM:

Erection of Raw water pumps (foundations are to be casted)

Erection of Rubber expansion joints, NRVs and Butter fly Valves at discharge side of pump

(Materials are to be received).

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Erection of 650NB pipe from pump discharge to stilling chamber at clarifiers.

Erection of Control Valve, Air release valves and P & I Instruments of pipe line.

Power and control cables to the motors of Raw water pumps and Butter fly valves from MCC.

PRETREATMENT PLANT:

Civil works on clarifiers, stilling chamber, sludge thickener, Sludge pit, Chemical House, Filter Water Pump

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House, Pretreatment MCC Building are to be completed before taking up of the mechanical works.

Erection of Clarifier Bridge and floculaters paddles.

Erection of Travel drives floculaters drives.

Erection of Sludge Thickener Bridge.

Erection of Sludge Pumps.

Erection of Centrifuge.

Erection of alum, line and Poly electrolyte tanks and its agitators.

Erection of Raw Water Chlorination System.

Erection of flash mixture.

Erection of Clarifier in let sluice Valves.

Erection of CT makeup pumps, Filter Back wash pumps and Service water pumps in Filter water pump

house.

Erection of expansion joints, NRVs Butter fly valves of above pumps and piping from pump discharge to

terminal points. Erections of spent filter back wash pump and its valves and piping.

Erections of filter back wash air blowers and its valves and piping.

Erection of pipe lines and valves in Rapid Gravity filters.

Erection of under slung crane in filter water pump house, electric hoist in chemical house and service

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water pump bay.

Power and Control cabling to above pumps from pretreatment MCC.

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AUXILIARY COOLING WATER SYSTEM:

Civil works on CWPH and Chlorination Building are to be completed.

Erection of EOT crane (35/5 Ton capacity) in CWPH.

Erection of ACW pumps and its motors.

Erection of expansion joints and discharge valves for ACW system.

Erection of ACW Header from CWPH to PHE and back to CW return water Header.

Erection of Hot water duct from condenser to cooling tower.

Erection of cooling tower in let Isolation valves.

Erection of initial filling ACW header to CW header with Isolation valves.

Erection of Air release valves and drain valves in CW duct.

Erection of Stop log gates for CW and ACW pumps.

Erection of coarse screens for CW and ACW pumps.

Erection of chlorinators, evaporators, Chlorine toners, chlorine absorption system, chlorine diffusers and its

pipe line.

Erection of anti corrosive inhibiter, Biocide and anti scalene tanks and its dosing pumps and its pipe lines

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with valves.

Erection of sulphuric acid storage tank and day tank, acid unloading pumps, dosing pumps and its pipe lines

with valves.

Power and control cabling to the above pumps and instrumentation.

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DM WATER SYSTEM:

Civil works for DM Water pump house, pipe rack from Budameru Bridge to DM Water Pump House are

to be completed.

Erection of DM transfer pump with its suction and discharge valves and NRVs at the exiting Stage-III

DM water pump House.

Erections of DM water pipe line (150NB SS pipe line) from Stage-III DM water pump House to Stage-IV

DM water tank.

Erection of DM water tank in complete shape and its testing.

Erection of Condensate storage tank and its testing.

Erection of DM Make up pumps, its suction, discharge valves, NRVs and its piping.

Erection of Boiler fill pumps, its suction, discharge valves, NRVs and its piping up to Boiler drain valve.

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Power and control cabling to above pumps from BOP MCC.

Erection of local control panels to the above pumps.

LDO & HFO SYSTEM:

Civil works for LDO & HFO tanks are to be completed.

Erection of LDO & HFO tanks.

Erection of LDO & HFO pipe lines from existing to fuel oil pump house to LDO & HFO tanks including

insulation of HFO line with Isolation valves at tapping point.

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SERVICE AND INSTRUMENT AIR SYSTEM:

Civil works for Compressor house and foundations for air receives out side the building are to be

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completed.

Erection of under slung crane in compressor house.

Erection of service and Instrument Air Compressor modules (6Nos.).

Erection of Air driers (2 Nos.).

Erection of Air receivers (5Nos.).

Erection of pipe line from compressor to Air receiver and Air receiver to Air drier and then to receiver.

Erection of valves and P & I instruments.

Power and control cables to above compressor and air driers.

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AIR CONDITIONING SYSTEM:

Erection of water cooled air conditioning system in TG Building including supply of ducting supply air

diffuser, return air diffuser, volume control dampers, air handling units of various capacities, cooling

towers etc.,.

Erection of water cooled air conditioning system in ESP control room including supply of ducting

supply air diffuser, return air diffuser, volume control dampers, air handling units of various capacities,

cooling towers etc.,.

Erection of Air cooled system in Switch yard control room including supply of ducting supply air

diffuser, return air diffuser, volume control dampers, air handling units of various capacities, etc.

Power and control cabling to chiller units, air handling units, fans etc.

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ASH HANDLING PLANT:

Erection of Bottom Ash hopper including its structure.

Refractory lining to skin plates of Ash Hopper.

Erection of feed gates.

Refracting cooling water system i.e. erection of pumps and its piping.

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Ash extraction valves for completed ESP hoppers, Economiser and Air heater hopper are to be

erected.

CT blow down piping to Ash water sump.

FIRE PROTECTION SYSTEM:

Erection of 450NB pipe from raw water pipe line including butterfly valve to the fire water tanks.

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Erection of fire hydrant pumps including its suction and discharge valves and piping.

Erection of spray pumps including its suction and discharge valves and piping.

Erection of diesel driven hydrant pump including its suction and discharge valves and piping.

Erection of jockey pumps including its suction and discharge valves and piping.

Erection of booster pumps including its suction and discharge valves and piping.

Erection of hydrant line header from fire water pump house to Boiler area.

Erection of risers to Boiler.

Erection of Spray header line from fire water pump house to station transformer 6.

Erections of deluge valves and spray system including nozzles and quarzoid bulbs for station

transformer 6.

Erections of Hydrant system around Fuel Oil pump house and HFO & LFO tanks.

Erection of smoke detection system in Control Room LT & HT switch gear rooms and cable vaults.

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ELECTRIAL WORKS IN BOP EQUIPMENT:

Erection of 2000KVA transformers at pretreatment MCC building.

Erection of LT MCC in pretreatment MCC building.

Erection of bus duct from transformer to LT MCC.

Laying of 11Kv cables from 11Kv switch board at TG building to transformers including its terminations at

both ends.

Laying of power cable for DC supply from Battery charger room at TG Building to DC DB in pretreatment

MCC building.

Laying of LT cables from MCC to various drive motors including its terminations at both ends.

Laying of control cables from local control stations and field switches to PLC I/O rack.

Erection of Lighting Transformers and LDBs including cabling in pretreatment MCC building.

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Erection of Light fittings and conducting wiring from lighting panels to fittings in the building and at

equipments.

Erection of 1600KVA transformer (BOP service transformer) at Ash pump house.

Erection of 200KVA to (AHP service transformer) at APH.

Erection Ash handling MCC, power cables to RCW pump supply, LT Bus ducts etc.,

Erection of LT MCC in Ash pump House MCC building

Laying of 11Kv cables from 11Kv switch board at TG building to transformers including its terminations at

both ends.

Laying of power cable for DC supply from Battery charger room at TG Building to DC DB in pretreatment

MCC building.

Laying of LT cables from MCC to various drive motors including its terminations at both ends.

Erection of Lighting Transformers and LDBs including cabling in AHP MCC building.

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Erection of Light fittings and conducting wiring from lighting panels to fittings in AHP MCC building and at

equipments.

Erection of LT MCC in SILO MCC building for power supply to Raw water pumps and its cables

terminations.

Erection of AC MCC for main control room in TG Building.

Erections of AC MCC for ESP control Room.

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Dr. NARLA TATA RAO THERMIAL POWER STATION

Stage-IV, 1X500 MW unit,

Boiler Light up works pertaining to BOP Division

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