Quick and effective repair methods for damaged dry gas seal housing without removing the casing.

[rQuestionEngineering]

What is the quick and effective repair methods for damaged dry gas seal housing without removing the casing and send it back to the factory /workshop ?

 

[JJPellin]

I am not aware of any repair method for this damage. Review the seal drawing and determine the effect of the damage. I assume an o-ring crosses this damaged area. What will leak across that o-ring? There is a chance that slight leakage will not be a problem. Often o-rings are redundant.

Johnny Pellin

 

[rQuestionEngineering]

The gas migrates into the lube oil system and accumulates in the tank, causing explosion risk.

 

[JJPellin]

A single o-ring leak would allow process gas to go directly to the lube oil tank? That seems like some poor design decisions were made. We would normally have a separation seal with air or nitrogen directing any leakage to a vent at an elevated location. I could make more useful comments if you posted the seal cross-sectional drawing with a note where the housing damage is located.

Johnny Pellin

 

[MintJulep]

Potentially you could apply selective plating process there.

One of several vendors for the process.

https://www.sifcoasc.com/what-is-selective-plating/