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BOILER START UP

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BOILER EXPANSION

DOWNWARD DIRECTION - 234 MM.

LEFT AND RIGHT SIDE - 39 MM.

FRONT AND REAR SIDE - 25 MM.

REAR PASS RING HDR 127 MM

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Conti

Purge permissives

All feeders off, All hot air gates closed,

all scanners show no flame. Put LDO System in operation.

Maintain Furnace / Wind box DP

Light up Boiler with AB elevation(Rotate firing).

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COLD START UP

Charging of 6.6 KV Electrical Supply System

& Charging of 6.6 KV Switch Board..

Starting of CW & ACW Water Pump.

Start DMCW system

Starting of Air Compressor system Charging of DM Make up System, Fill FST &

Condensate Storage tank.

Open of Boiler Side Vents & Drains.

Filling of Boiler Drum through Boiler Fill pump(250 m3).

Start of Air Pre heater A & B (Ensure APH iscoming on Air Motor).

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Conti Charge PRDS

Take Turbine on barring gear

Taking Generator Seal Oil system in Serviceand fill H2 gas.

Provide Turbine Gland sealing

Start Vacuum pumps & pull vacuum

Put HPBP in operation

Charge HFO heating line

Start HFO Pump Put De aerator & Hot well Level Control on

auto.

Put De aerator to initial heating.

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Conti. Increase firing by taking HFO guns after

attaining HFO temperature.

Increase the pressure to 20 ksc and MSTemp 340 350 deg C and RH Temp 350deg C

Roll Turbine to 690 rpm and soak the turbinefor 35 40 mins

Maintain MS Pr and Temp

Roll Turbine to 3000 rpm& soak for 20 mins

Synchronize the machine

Close HP & LP BP

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Conti

Take pulveriser A in service and rise the

load to 50 MW.( 28 Kg/cm2, 170 Deg C)

Charge LP Heaters from steam side. Take Pulveriser B in service and rise

the load to 75 MW.( 50 kg/cm2, 250

Deg c) Take 100 % feed water line.

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Take Mill C in service and rise the load to 100MW.( 70 Kg/cm2, 350 Deg C)

Charge the HP Heaters from water side first

and then steam side. Take second BFP in service.

Establish second air & flue gas gas cycle. ( iestarting second ID & FD fan).

Take Mill D in service and rise the load to 170MW.(110 Kg/cm2, 540 Deg C)

Take CMC in service.

Rise the load to 250 MW.

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Conti

It takes 6.33 Hrs to reach full load.