API RP 571 discusses Hydrogen-Induced Cracking (HIC) and Blistering:
“Postweld heat treatment (PWHT) does not significantly reduce susceptibility to HIC, as the mechanism is primarily driven by hydrogen charging in wet H₂S environments and steel cleanliness, not residual stresses.”
“PWHT is more effective for SSC, SOHIC, and other stress-driven mechanisms.”
Thus, HIC will not benefit much from PWHT, making option C correct.
Contribute your Thoughts:
Chosen Answer:
This is a voting comment (?). You can switch to a simple comment. It is better to Upvote an existing comment if you don't have anything to add.
Submit