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Dear All;
we had a trip for one of our frame-5 gas turbine MARK VI and after investigation we found that the cause of the trip was "L12 HFD_P HP OVERSPEED FAULT PROTECTION SPEED INPUT TRBL." this means the difference between TNH_OS and TNH is more than 5%.
In trip log live, I found before one hour of tripping, the difference between both speed is less than 05% (very closer). if you have any previous experience with same issue, please advise me, I have to know why this signal L12 HFD_P triggered to 01 and cause turbine tripped.
The problem was cleared after resetting by operation team, and the turbine started normally without any issue.
Regards
we had a trip for one of our frame-5 gas turbine MARK VI and after investigation we found that the cause of the trip was "L12 HFD_P HP OVERSPEED FAULT PROTECTION SPEED INPUT TRBL." this means the difference between TNH_OS and TNH is more than 5%.
In trip log live, I found before one hour of tripping, the difference between both speed is less than 05% (very closer). if you have any previous experience with same issue, please advise me, I have to know why this signal L12 HFD_P triggered to 01 and cause turbine tripped.
The problem was cleared after resetting by operation team, and the turbine started normally without any issue.
Regards