Drop in Hydraulic Pressure

R

Thread Starter

rvs_gasturbine

we have 3 GE frame 6 machine. in one of the machine there was sudden drop in hydraulic pressure from 88 kg/cm2 to 80 kg/cm2.

1.machine was running on 100 percent ng.
2.no raise /low command was given.
3.no leakage from gcv/srv/igv.
4.no change in hydraulic filter dp.

no findings, could it be relief valve malfunctioning?
 
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