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Re: [MW:33181] RE: PWHT Segment Wise for 9 Meter Dia Vessel

By Materials & Welding
Dear Vishal 
As I understand  correctly , the vessel circumference is 9 mtr  and  your query is that you want to carry out the PWHT of the Circumferemtial seam in segments.

The answer is No . You have to carry out PWHT  of  ENTIRE Circumferencial joint in ONE cycle.
You can do it by LOCAL PWHT method by wrapping Electric Resitance Coil on job and attaching job thermocouples.

Many HT contracter are doing such type jobs regularly.
Thanks 
Vishwas Keskar 
IWE- International Welding Enginner

On Sat, 25 Jun 2022, 20:21 , <pgoswami@rogers.com> wrote:

Hi,

It's allowed by Sec VIII, DIV1. Please see the highlighted clauses as below.

Thanks.

 

Pradip Goswami.P.Eng, IWE.

Independent Welding & Metallurgical Engineering Specialist

Saudi Aramco Approved Designated Project Welding Engineer (DPWR)

Qatar Petroleum Approved, SME-Materials & Corrosion Engineering.

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgoswami@rogers.com,pradip.goswami@gmail.com

Cell/Whasapp:1-905-9793232

 

UW-40 PROCEDURES FOR POSTWELD HEAT TREATMENT:

From: vishal hirde <vishalhirde1988@gmail.com>
Sent: June 25, 2022 8:24 AM
To: materials-welding@googlegroups.com
Subject: PWHT Segment Wise for 9 Meter Dia Vessel

 

Dear All,

 

We are fabricating a Vessel of Diameter 9 Meter at Site, requires PWHT: Material Grade SA 516 Gr. 70.

 

 For Circumferential Joint PWHT can it be performed Segment Wise as diameter is more??

 

Pl. Confirm as per ASME Sec VIII Div 1 can it be done in Segment Wise. 

 

--

With Best Regards,

Vishal Hirde



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