Stress relieve cover by PWHT

[Kurniatullah]

Dear Professional,

Now, i preparing procedure for heat treatment,
i have equipment as below condition

- Material SA516-70N
- Extreme Fiber elongation over than 5%
- PWHT should be performed due to special service,

my question: whether we can performed PWHT only, due to stress relieve will cover by PWHT.

please inform applicable code to be used.

please advice,

Regards
KRN

 

[TGS4]

What's the Code of Construction?

 

[Kurniatullah]

all requirement shall comply to ASME

 

[TGS4]

ASME Section I?
ASME Section III? Which of the various and multitudinous Divisions and/or Subsections?
ASME Section IV?
ASME Section V?
ASME Section VI?
ASME Section VIII, Division 1?
ASME Section VIII, Division 2?
ASME Section VIII, Division 3?
ASME Section XII?

Seriously - in the Boiler and Pressure Vessel Codes developed by ASME, there are numerous different Sections and Divisions. If you want an intelligent response to your question, you are going to need to provide some appropriate information.

Also, since this PWHT is for "special service", perhaps you ought to provide what that "special service" is - that will probably have an impact on the answer.

What does your purchase specification say?

 

[Kurniatullah]

ASME Sect. VIII, the service of equipment is Wet H2S.

the materil SA516-70N (HIC)

 

[metengr]

People sometimes use stress relief and post weld heat treatment interchangeably or as separate terms. The Code, Section VIII, Div 1, views stress relief and post weld heat treatment one in the same.