Hi Neilashkumar,
There's no answer to such questions in these "Open Forum". If such conditions are stipulated in your project specifications, then it's deemed as mandatory. In order to get a deviation or any waiver please discuss the same with clients and then come up with some consent/understanding.
Many clients insists on "Dehydrogenation" to safeguard against hydrogen induced damages (especially wet hydrogen cracking") in refining environments. In view of such imminent damage and other forms of hydrogen damages in refining environments, dehydrogenation treatment is most commonly asked for in present day fabrication standards.
Thanks.
Pradip Goswami, P.Eng,IWE
Independent Welding & Metallurgical Engineering Specialist & Consultant.
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299
From: 'Neilashkumar' via Materials & Welding [mailto:materials-welding@googlegroups.com]
Sent: Thursday, April 07, 2016 1:30 AM
To: materials-welding@googlegroups.com; Jim Price
Subject: [MW:24643] Intermediate stress relief treatment
Dear All,
Good Day ! As per our client aramco , insisting us to do dehydrogenation treatment for P11 material after welding completion for four hours prior to PWHT.
Please clarify whether post heat maintainence for 4hours is mandatory for fillet weld.
As per our WPS I am doing it for groove joints , it is clad vessel for 145 inch diameter ...
Above that insulation and pad welding Accor , is there any clause given in ASME section states that post heat maintainence is not required for P11 material.
As per aramco standard SAESW014 General it is given
P.NEILASHKUMARSent from my iPad
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+ 91 9952110791
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