Rotor Seizure due to DG seals
Rotor Seizure due to DG seals
(OP)
Dear all, we had an incident of rotor seizure of syn gas compressor in ammonia plant. The compressor tripped on high vibration and came to halt very quickly, internal inspection inspection revealed that impellers and labys were all good on but inboard primay gas seal was damaged and found in pieces also badly entangled with its housing. Have you come across such a scenario of rotor caused by malfunction of DG seals? It will be helpful in understanding the root cuase of this unsual failure.





RE: Rotor Seizure due to DG seals
David
RE: Rotor Seizure due to DG seals
If there is any chance that you lost seal gas flow or DP in operation, this could cause a failure of this type. Mishandling during installation could cause cracks that would fail the seal faces in service. High vibration from surging or liquids could damage the faces depending on the configuration of your machine.
Johnny Pellin
RE: Rotor Seizure due to DG seals
RE: Rotor Seizure due to DG seals
If the machine you are asking about has continuous process and vibration monitoring, you should examine the history to look for periods of low flow with high vibration that could indicate surge.
Johnny Pellin