Weldinspect
Mechanical
Hello, acording to ASME VIII section 1 and 2, after performing the Stress relief procedure, does it comand to do more X ray?
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X ray after stress relief in sphere 5
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Not specifically pertinent to this discussion but ASME B31.3 specifies that for P3, P4 and P5 materials, all examinations (e.g., RT) shall be completed after PWHT. See para 341.3.1(a).
For other P group materials, ASME B31.3 does not specify whether before or after PWHT so either would be permissible.
In sour service (both vessels and piping) I have seen many end user specifications that require that examinations be performed both before and after PWHT or that the be performed after PWHT. Some require that these examinations shall be no sooner than 24 hrs after PWHT and some specify 48 hrs.
For other P group materials, ASME B31.3 does not specify whether before or after PWHT so either would be permissible.
In sour service (both vessels and piping) I have seen many end user specifications that require that examinations be performed both before and after PWHT or that the be performed after PWHT. Some require that these examinations shall be no sooner than 24 hrs after PWHT and some specify 48 hrs.
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