Gas Turbine Stopping Sequence

Gas Turbine Stopping Sequence Points : Gas Turbine Stopping Sequence Power Plant a. Turn off master control switch
b. Stop all the signals. Empty DSP Counter (to reach FSNL)
c. Reduce fuel to minimum VCE speed 75% speed 141IS drop out.
d. Drop out the VCE 0 volts.
e. Turn off the flame detector indicating lamp.
f. Shut off the fuel supply.
g. start the lube oil pump. 30% speed 14HA drop out.
h. Less than 2% speed I4HM drop out.
i. Turn the ratchet start (to cool down) then (urn the ratchet stop.
j. Stop the tub oil pump.
k. Turn the master control switch to stop position the generator will automatically unload, the generator breaker will open and the turbine will shut down and began in the cool don sequence.
l. When the load reaches zero then generator breaker should he tripped with the breaker control switch. The turbine should then be given a stop signal with Master control switch
m. After shut down, the turbine will automatically begins it cool down sequence. This involves turning the turbine shaft by means of the hydraulic ratchet.