Wednesday, March 23, 2011

BOILER (MASTER FUEL TRIP)

Steam Generator ( boiler ) is very important equipment at thermal power units , Boiler is the steam supply for the unit to rotate the turbine's rotor , hence produce electricity at Generator's stator.

Boiler usually equipped with solar and Main gas firing equipments , and you can imagine that huge boiler disappear in seconds unless operator take his precaution from operation hazards., hence Boiler always equipped with a protection relays to trip the boiler out of service if hazards conditions has happened , these relays are enclosed at huge protection system is called ( Master Fuel Trip ).

From its name ( Master Fuel Trip ) , it produces trip signal for fuel systems from operation , then trip the boiler out of service away from danger. this relay needs many conditions to operate , these conditions will be found at the following figure.



 


MASTER FUEL TRIP , CONDITIONS :-


1-REHEATER PROTECTION
2-DELAYED LIGHTING
3-LOSS OF ALL FUEL INPUT
4-DRUM LEVEL HI HI
5-DRUM LEVEL LOW LOW
6-ALL FD FAN STOP
7-FURNACE PRESSURE HI HI
8-CCS WATCHDOG ABNORMAL
9-COMBUSTION AIR FLOW LOW LOW
10-CONDENSER PROTECTION
11-PARTIAL LOSS OF FLAME
12-BOILER EMERGENCY TRIP
13-LOSS OF ALL FLAME
14-HP/LP BYPASS VALVE ABNORMAL CLOSE
15-ALL FUEL TRIP DELAY TRIP

6 comments:

  1. I really believe that you should consider some english classes so you can learn to create a blog that people can read and understand. Work on it. I feel that you have the knowledge, but you need to be able to convey it to others.

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  2. I think it was useful, though. Thank you very much!

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  3. MR.Khaled Hamza can you explain to me about cause lose all flame boiler?


    thanks

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