Weld Prep for WFMT in Wet H2s Service.
Weld Prep for WFMT in Wet H2s Service.
(OP)
Is it necssary to prep all welds (butt and fillets)inside of pressure vessels after PWHT to perform WFMT?
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Weld Prep for WFMT in Wet H2s Service.
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RE: Weld Prep for WFMT in Wet H2s Service.
RE: Weld Prep for WFMT in Wet H2s Service.
RE: Weld Prep for WFMT in Wet H2s Service.
RE: Weld Prep for WFMT in Wet H2s Service.
What you are describing is more of a contractual issue versus a technical issue. The Authorized Inspector (AI) has the right to require any blend grinding in evaluating visual imperfections or if there is an NDT interpretation issue related to surface condition.
Regarding blend grinding, in general, if you had specified it in your fabrication requirements for increased fatigue resistance it shall be done. If you did not specifically address blend grinding, the fabricator has the call in terms of final weld quality meeting Code requirements with input from the AI.
RE: Weld Prep for WFMT in Wet H2s Service.
RE: Weld Prep for WFMT in Wet H2s Service.
There's not a one fit for every situation.
RE: Weld Prep for WFMT in Wet H2s Service.