[MW:24710] Re: Intermediate stress relief treatment

dear sir,

ASME SEC IX OR SEC I , does not give any guidelines for DHT ie post heating.The end user or fabrication company shall decide @DHT based on material , welding joint thickness ,consumable being used (H2 content)

SABIC impose rules when COC are lenient .

On Thursday, April 7, 2016 at 1:39:18 PM UTC+5:30, neilash kumar wrote:

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.NEILASHKUMAR 

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