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yes sir ! PID are crucial for operation, LOTO, and maintenance

problem has been solved :) field technicians statement was: when switching from lube oil pump A to lube oil pump B, pump B start, then pump A stop, lube oil pressure drop, and then pump A automaticly start (at this point both pump are running) we thought about 3 possibilities: check valve A...

We have waited an long outage, when shaft line was cold enough to stop turning gear and lube oil system. So that there is no risk to conduct test then we tested change over, with pump discharge a close, and with pump discharge b close. with pump discharge a close there was no pressure drop...

Of course, switching pump must be bumpless I'm asking the author, to help diagnose his problem the meaning of this question is to help focusing on part that fails for example few years ago, we have pressure drop when switching from pump a to b , but didn't occur from b to a. It was pump a...

Did this happen also when you switch from 88QB to 88QA?

Hi, I don't know the formula for CO2, official duration is 24 hour for safety reason, the gen frame must not leak at all: Create explosive atmosphere And hydrogen fire is barely not visible by human eyes you can check the frame with gas detector, since it's fill with CO2 and also with soapy...

Hello sir, at my plant we used to run the test for half day, usually during night shift, so that in the morning we have the result and can either work on finding the leakage or start filling the gen with hydrogen. don't forget to isolate scavenging and h2 analysers prior to the test. (Those...

Hello sir, is your turbine already fire when trip occurs? do you think excessive fuel flow is real or safety controller is fool by faulty measurement ?

Hello sir, nice scenario, to think of i think sss clutch will re engaged as the steam turbine reach 3000rpm Therefore, the gt will try to unload. if not, all you can do is push emergency stop button, to stop heating the boiler and try to break the pressure by opening bypass valves to...

I haven't faced a similar problem yet Maybe the seal oil has trouble to ajust during acceleration: If it overflow you will find oil either in the generator casing or on the ground in excitation collector housing The generator seal can be worn or misplaced and speed variation affect them a lot...

Hello, i'm afraid there is no solution, are you sure the max temp is the root cause of the tube leaks? i work in a thermal plant too, and when leakage occurs, for us is mainly weld between tube and main feeder that breaks The cause is the thermal stress when operator swing load too fast or...

My bad. Correct formula is q=m*deltaH In addition, plants are designed to have best efficiency at full load. Even if you burn less fuel by reducing steam temp and pressure, it's like running at partial load, and therefore, the efficiency will decrease.

I can not predict what will be your power output but it will lower by reducing pressure and temperature of steam you reduce it's enthalpy you can find molier diagram or steam table on internet, that will indicate you the amount of enthalpy your steam has. then for turbine the simple formula...

Hello sir, Sorry for my broken english temperature matching while doing shutdown is also call "maintenance shutdown" for GE combined cycle plant. the purpose of temp matching is to lower the exhaust gas temp from the gas turbine in order to lower the steam temp from the heat recovery steam...