Stress Corrosion Cracking (SCC)
Equipment: CS Off Gas KO Drum
Age: 34 years old
The equipment has suffered from SCC of weld heat affected zone.
About 20 cracks have appeared and many have gone through the wall causing small leaks.
I think there is no risk of vessel failure as the cracks...
Problems with product blockages when steam tracing leaks occur.
The units are Maleic Acid and Phthalic Acid.
I suppose steam tracing leaks are very critical in case Have you got any case of solidification/product blockages because of steam tracing leak.
I would appreciate any experience...
Have you got any experience on pump operational best practice (spare pump policy).
I suppose the response might differ depending on the service and configuration of the pumps. Are you aware of any standard procedure on this issue?
I appreciate any experience you might have.
Regards
Ale18