A
We have two gas turbine with MARK-II and MARK-V IDOS control. Both gas turbines are running at the moment.
MARK-V
Recently we changed some fuse panel indications of MARK-V control and observed that purge complete L2BB was 1 in logic and hence indication was flashing.
MARK-II
In contrast MARK-II control 2BBX relay at 1R page was continuously de-energized and hence 2BBX (boiler purged) indication was OFF.
We checked the logic and it seems that logic and input to the logic are same 14hm=1, 33BB/bc=1, 33BV/bo=1.
1)Why there is a difference of 2BBx indications of MARK-II and MARK-V control.
2) Should 2BBx light vanish during the normal running of gas turbine.
Best regards,
Adeel
MARK-V
Recently we changed some fuse panel indications of MARK-V control and observed that purge complete L2BB was 1 in logic and hence indication was flashing.
MARK-II
In contrast MARK-II control 2BBX relay at 1R page was continuously de-energized and hence 2BBX (boiler purged) indication was OFF.
We checked the logic and it seems that logic and input to the logic are same 14hm=1, 33BB/bc=1, 33BV/bo=1.
1)Why there is a difference of 2BBx indications of MARK-II and MARK-V control.
2) Should 2BBx light vanish during the normal running of gas turbine.
Best regards,
Adeel
