PWHT Requirement
PWHT Requirement
(OP)
We are currently doin a project in which 24" x 18 " pig traps are used. the thickness of major barrel is 12.7 mm and of that of the minor barrrel is 10.9 mm.
and it is designed as per ASME B31.4. DOes the requirement of PWHT applicable.
AS per ASME B31.4, PWHT is applicable only when the wall thickness is more than 32 mm.
Request to Please clarify.
and it is designed as per ASME B31.4. DOes the requirement of PWHT applicable.
AS per ASME B31.4, PWHT is applicable only when the wall thickness is more than 32 mm.
Request to Please clarify.





RE: PWHT Requirement
RE: PWHT Requirement
Thanks for the clarification.
The end closure is designed as per ASME Sec VIII Div 1, in that case , will PWHT required?
RE: PWHT Requirement
Service conditions (lethal or SCC) will dictate otherwise.