Impact Testing requirement for welding procedure qualification

[Perumal Govindan]

Dear Experts,

We have the piping material spec. of API 5L Gr. B/ X52/X56 PSL piping materials, MDMT is -3 (North Kuwait) Degree centigrade and thickness ranging from 5 mm to 31 mm.

Please advice whether the impact testing is required to carried during PQT.

With Kind Regards

P Govindan

[anand gupta]

Yes required .

PQR need impct tested

a p gupta

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On Sat, 6 Aug, 2016 at 21:12, Perumal Govindan

<perumal...@gmail.com> wrote:

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[dili...@gmail.com]

If the thickness us not higher than approx. 22 mm this material is impact test exempted. See ASME B31.3, table 323.2.2A curve B

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From: Perumal Govindan Sent: Κυριακή, 7 Αυγούστου 2016 - 05:40 To: material...@googlegroups.com Reply To: material...@googlegroups.com Subject: [MW:25208] Impact Testing requirement for welding procedure qualification

[Alan Denney]

The answer is the normal one – check what is required by applicable client specification, (or datasheets, notes on drawings or client clarifications) and code of practice. What is your application? Is it a pipeline (API rules probably apply) or piping (ASME IX rules probably apply). Minimum design temperatures may be dictated by blow down conditions rather than ambient conditions.

 

Alan Denney

AKD Materials Consulting Ltd

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[Perumal Govindan]

Dear Sir,

Impact testing requirement is not specified in the Client / Project Specification / data sheets / drawings for the welding procedure qualification except MDMT (-3 Degree Centigrade).

Code for fabrication is ASME B31.3 and I believe that the Client Specification or welding specification (of Client) and ASME B31.3 Code is sufficient to decide the impact testing rather than other requirements.  

Further, above 20 mm wall thickness we have already qualified welding procedure specification with impact testing.

With Kind Regards

P Govindan

On Sun, Aug 7, 2016 at 1:41 PM, Alan Denney <al...@denney1.freeserve.co.uk> wrote:

The answer is the normal one – check what is required by applicable client specification, (or datasheets, notes on drawings or client clarifications) and code of practice. What is your application? Is it a pipeline (API rules probably apply) or piping (ASME IX rules probably apply). Minimum design temperatures may be dictated by blow down conditions rather than ambient conditions.

 

Alan Denney

AKD Materials Consulting Ltd

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of dili...@gmail.com
Sent: 07 August 2016 08:56
To: Perumal Govindan <materials-welding@googlegroups.com>
Subject: Re: [MW:25218] Impact Testing requirement for welding procedure qualification

 

If the thickness us not higher than approx. 22 mm this material is impact test exempted. See ASME B31.3, table 323.2.2A curve B

 

Sent from my BlackBerry 10 smartphone.

From: Perumal Govindan Sent: Κυριακή, 7 Αυγούστου 2016 - 05:40

To: materials-welding@googlegroups.com Reply To: materials-welding@googlegroups.com

Subject: [MW:25208] Impact Testing requirement for welding procedure qualification

Dear Experts,

 

We have the piping material spec. of API 5L Gr. B/ X52/X56 PSL piping materials, MDMT is -3 (North Kuwait) Degree centigrade and thickness ranging from 5 mm to 31 mm.

 

Please advice whether the impact testing is required to carried during PQT.

 

 

 

With Kind Regards

 

P Govindan

 

 

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[Mukul Samad]

I just want to know that , when impact test is required ?

[james gerald]

There are 2 things which need to be considered.

1. Base Material Impact requirement.

As specified in API 5L which need to be part of MTC and decided based on OD.

2. Welding Procedure Impact test.

It depends on the Design Code and the corresponding fabrication code.

Thanks & Regards

J.Gerald Jayakumar

0091-9344954677

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