SCC in Stainless Steel Water Jacket

SCC in stainless steel water jacket

 

Building: Food Factory

Manifestation: Leaks in stainless steel hot water jacket surrounding pipe delivering chocolate. Due to stress corrosion cracks initiating from pits in stainless steel.

Cause: Incorrect grade of austenitic stainless steel installed (304 instead of 316) to resist pitting in high chloride water

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