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ASME BPVC.VIII.1-2019 UHA-51(g) and (f)

Thread starter pete73
Start date Jan 20, 2021

Status: Not open for further replies.

Jan 20, 2021

pete73

Mechanical

We are going fabricate a SS316L/SS310 vessel with MDMT= -300F using GTAW and SAW. The vessel meets the requirements of UHA-51(g), stress ratio less than 0.35.

First clarification: Per UHA-51(g) the base metal, WPS and production welds do not need to be qualified by impact testing but do the welding consumables still required to be pre-use impact tested per UHA-51(f)?

Second: Does UHA-51(f)(2) require the use of impact qualified WPS in production? Figure JJ-1.2-3 seems to imply that this is a requirement.

Any insight would be appreciated.

Thank you