Re: [MW:13060] PWHT requirement

Hai karthik and Ilankumaran,

The thickness of the shell plate should be 25 mm and the nozzle size should be NPS 12 and above.Soaking Temperature should be 600-650 deg C. For this 10mm pl don,t do any PWHT. U will get severe distortion on shell plates.

On 25 November 2011 07:45, Sojin K soman <soji.engineering@yahoo.com> wrote:

For this u no need to go for to code also. As this is carbon steel having only 10mm thickness . there is no chance of stress developing.Go through metallurgy of steel (CS,SS, AS) in AWS hand book volume 4. And u should refer standards for confirmation of thickness limitation.

From: Karthik <karthik6684@yahoo.com>
To: materials-welding@googlegroups.com
Sent: Tuesday, June 14, 2011 2:30 PM
Subject: Re: [MW:11323] PWHT requirement

Hi,
No need to do PWHT as per API650-5.7.4 for material group I,II,III or IIA the thickness is less than 25mm,unless otherwise specified in Project Spec.

Thanks & Regards,

(Karthik)

Karthikeyan.S

QA/QC Manager

Getabec Energy Co.,Ltd.

379,Moo6,Soi8,Nikhomphatana,

Rayong-21180,

Thailand.

Phone: 0066 38 897035-8 (Off)

Fax: 0066 38 897034

Hand Phone: 0066 892512282

--- On Mon, 6/13/11, k.ilangkumaran ilangkumaran <k.ilangkumaran@yahoo.com> wrote:

From: k.ilangkumaran ilangkumaran <k.ilangkumaran@yahoo.com>
Subject: [MW:11317] PWHT requirement
To: materials-welding@googlegroups.com
Cc: pgoswami@quickclic.net
Date: Monday, June 13, 2011, 9:02 PM

Dear experts,

Do we need to have PWHT for the plates of SA516 Gr 60 and thickness is just 10mm wall thickness and construction code is API 650 while preparing for PQR. I am not able to understand the requirements as per the code.

Can somebody guide me please?

Regards

Iangkumaran

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LOVE EVER HURT NEVER
Muthusamy@balu
QA/QC Mechanical Engineer

DOOSAN Heavy Industries and Construction

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