J
February- 2006
One of our Gas turbine (Mark V , 6581B) tripped on loss flame . Following alarms logged in the trip history.
Trip history showing
FSGR suddenly dropped from 18 % to 0.6%,
FPG2 dropped from 16.24 Bar to 10.3, then 6.6
FSG changed from 45 % to 43 % then 53%
Exhaust Temp TTXD 1,4,7,10,13,16 readings were in the trip history was showing minus value.
0433-12:19:05.406- True-Water cooling temp sensor fault
0110-12:19:05.468- True-Compressor Inlet T/C disagree
0419-12:19:05.468- True-Lube Oil tank T/C #1 fault
0257-12:19:05.468- True-Gas fuel temp high spread
0366-12:19:05.468- True- Air Atomizing temp measurement fault
0060-12:19:06.781- True- Loss of flame trip
We have replaced SRV servo valve and <R> core TCQA card.
Last September this unit tripped on loss of flame alarm and that was due to trip coil 20FG failure.
April-2006
Same unit tripped with exactly same alarm and trip history.
Checked 20FG coil, terminations, stroked SRV , everything working fine.
Replaced TCQA <R> core again. Now the Unit is running normal.
What could be the root cause of these trips ?
Is there any ribbon cable problem?
Any body knows the mark V card interconnecting ribbon cables GE part number ?
Earlier this unit was affected lots of signal traffic problems, so we disconnected local HMI from the <C> , so only one multiunit Remote HMI is connected to <C> core now.
After this modification following alarms not appeared so far.
DCC BMS: OUT OF MEMORY
DCC UNABLE TO GET DPM BUFFER FOR XMIT
DCC DPM: NO BMS MEMORY FOR ISR
DCC DPM: INVALID DESTINATION ADDRESS
How to make RC filters in the solenoid circuits?
Kindly analyze these problems
Kindly share your experiences and suggestions.
Thanks in advance
Joy
One of our Gas turbine (Mark V , 6581B) tripped on loss flame . Following alarms logged in the trip history.
Trip history showing
FSGR suddenly dropped from 18 % to 0.6%,
FPG2 dropped from 16.24 Bar to 10.3, then 6.6
FSG changed from 45 % to 43 % then 53%
Exhaust Temp TTXD 1,4,7,10,13,16 readings were in the trip history was showing minus value.
0433-12:19:05.406- True-Water cooling temp sensor fault
0110-12:19:05.468- True-Compressor Inlet T/C disagree
0419-12:19:05.468- True-Lube Oil tank T/C #1 fault
0257-12:19:05.468- True-Gas fuel temp high spread
0366-12:19:05.468- True- Air Atomizing temp measurement fault
0060-12:19:06.781- True- Loss of flame trip
We have replaced SRV servo valve and <R> core TCQA card.
Last September this unit tripped on loss of flame alarm and that was due to trip coil 20FG failure.
April-2006
Same unit tripped with exactly same alarm and trip history.
Checked 20FG coil, terminations, stroked SRV , everything working fine.
Replaced TCQA <R> core again. Now the Unit is running normal.
What could be the root cause of these trips ?
Is there any ribbon cable problem?
Any body knows the mark V card interconnecting ribbon cables GE part number ?
Earlier this unit was affected lots of signal traffic problems, so we disconnected local HMI from the <C> , so only one multiunit Remote HMI is connected to <C> core now.
After this modification following alarms not appeared so far.
DCC BMS: OUT OF MEMORY
DCC UNABLE TO GET DPM BUFFER FOR XMIT
DCC DPM: NO BMS MEMORY FOR ISR
DCC DPM: INVALID DESTINATION ADDRESS
How to make RC filters in the solenoid circuits?
Kindly analyze these problems
Kindly share your experiences and suggestions.
Thanks in advance
Joy