In our compression station we have frame 5 machines. After visual inspection of the gas valves actuator assembly (bolted to stationary base plate) of one machine, I noticed a SMALL oil leakage (see the picture in the link below) from the GCV actuator plug while the machine was running. (notice that the plug is situated on the top half of the actuator assembly and it is removable).
the machine was working normally and the valves were stable.
After discussing this subject with a GE engineer, he told me that it should not be there, and this oil leakage will cause the valve to be unstable. According to him there is a sealing problem in the actuator piston, and GE has made a TIL about this problem.
In the other hand, an other engineer told me, it is normal as long as it is not big, and we need that leakage during the actuation of the valve to evacuate the oil from the other side of the piston else the valve will not be able to reach higher stroke positions (50% or more).
Is anyone has the correct information about this subject or a copy of the TIL mentioned above, and what is the main purpose of this plug?
https://drive.google.com/open?id=1YMl1Tgttj0G78SmTyue66sU_xdbyzPFh
the machine was working normally and the valves were stable.
After discussing this subject with a GE engineer, he told me that it should not be there, and this oil leakage will cause the valve to be unstable. According to him there is a sealing problem in the actuator piston, and GE has made a TIL about this problem.
In the other hand, an other engineer told me, it is normal as long as it is not big, and we need that leakage during the actuation of the valve to evacuate the oil from the other side of the piston else the valve will not be able to reach higher stroke positions (50% or more).
Is anyone has the correct information about this subject or a copy of the TIL mentioned above, and what is the main purpose of this plug?
https://drive.google.com/open?id=1YMl1Tgttj0G78SmTyue66sU_xdbyzPFh