Emergency in Power Plant
Emergency in Power Plant
Emergency in Power Plant
Boiler Emergencies
Turbine Emergencies
Other Emergencies
BOILER EMERGENCIES
Drum level low
Drum level high
Any FD fan trip
Any ID fan trip
DCF trip
Bed temperature too high
Final Steam temperature too high
Final Steam temperature too low
PSH O/L steam temperature high
Economizer O/L FW temperature high
High positive draught
High negative draught
O/L steam pressure too low
Drum Level Low
Check BFP discharge header pr. and start another BFP if required
Check FW control valves position in DCS and in field
Check position of all MOVs and operate them accordingly.
Check for any abnormal sound from furnace.
UAT trip
Observe the hotwell level and condenser vacuum and if the power is not
resumed within short time, trip the turbine and isolate all steam inputs to
condenser.
Reduce load on running turbine if required.
Observe ACW and turbine oil temperatures.
Check for reason of UAT tripping and charge all remaining feeders/MCC
keeping the faulty feeder/MCC isolated.
CEP trip
Ensure that standby pump has taken over.
Check for reason of tripping.
Check hotwell level and if it is low, take make – up water into hotwell.
Open hotwell re-circulation valve fully.
Check for passing of condensate valve B or C and isolate them accordingly.
If the tripping is because of overload, check for mechanical jamming of pump.
Vacuum drop
Check gland steam pressure.
Check CW temperatures.
Check hotwell level.
Check the running ejector.
Check for air ingress from all vacuum related lines and valves.
Cut down dumping steam.
Charge standby ejector if the rate of drop is more.
If the rate of drop is more, reduce load on turbine.
Fire/smoke at turbine area
Ensure that vapour extraction fan is running if the fire is because of oil leakage
from any bearing.
Use CO2 fire extinguisher in case of minor oil and electrical fires. Don’t use
water or other type of fire extinguishers.
In case of major fire, first isolate the source (trip the turbine and isolate
generator from electrical circuit) and then quench it.