V
Dear Sir,
BHEL Gas Turbine Frame-V machine have problem of MOP discharge pressure and Trip Oil pressure gradually drop.
MOP discharge pressure dropped up to 3.9 Kg/cm2 (Normal Pressure 4.5 Kg/cm2), and Trip Oil pressure dropped up to 3.3 Kg/cm2 (Normal pressure 4.3 Kg/cm2). Lube oil header pressure is maintained 1.9 Kg/cm2.
Following activity are carried out to increase the trip oil & MOP discharge pressure.
1. VR1 Tightened fully but no improvement.
2. MOP discharge pressure gauge isolation valve OL-5 isolated to suspecting any drain passing. But no improvement.
We doubted on VPR-1 so started AOP in manual mode and observed trip oil pressure became 4.3 Kg/cm2. So VPR-1 Ruled out.
We could not identify the problem why trip oil & MOP discharge pressure is coming down. Either MOP itself problem or any other checks we have to do.
BHEL Gas Turbine Frame-V machine have problem of MOP discharge pressure and Trip Oil pressure gradually drop.
MOP discharge pressure dropped up to 3.9 Kg/cm2 (Normal Pressure 4.5 Kg/cm2), and Trip Oil pressure dropped up to 3.3 Kg/cm2 (Normal pressure 4.3 Kg/cm2). Lube oil header pressure is maintained 1.9 Kg/cm2.
Following activity are carried out to increase the trip oil & MOP discharge pressure.
1. VR1 Tightened fully but no improvement.
2. MOP discharge pressure gauge isolation valve OL-5 isolated to suspecting any drain passing. But no improvement.
We doubted on VPR-1 so started AOP in manual mode and observed trip oil pressure became 4.3 Kg/cm2. So VPR-1 Ruled out.
We could not identify the problem why trip oil & MOP discharge pressure is coming down. Either MOP itself problem or any other checks we have to do.