Re: [MW:7873] WQT- Number of Welders Issue

Dear Raghuram,

 

My understanding as per QW 306 is, You can qualify 2 or more welders in single test coupon, but not allowed to weld each haf as stated by Limesh.

 

Regards

 

K.Babu

Singapore

 

----- Original Message -----

From: Bathula Raghuram (Mumbai - PIPING)

To: 'materials-welding@googlegroups.com'

Sent: Wednesday, October 27, 2010 6:59 PM

Subject: RE: [MW:7871] WQT- Number of Welders Issue

QW306: "Two or more welders or welding operators, each using the same or a different welding process, may be qualified in combination in a single test coupon". However all essential variable for performance qualification will apply individually . No change in 2010 edition in this regard.

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kathalingam Babu
Sent: Wednesday, October 27, 2010 3:58 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:7869] WQT- Number of Welders Issue

 

Limesh

 

I understand that, it has not been allowed to weld by 2 welders on single pipe as pr ASME latest revision.

 

I don't have latest edition, but you can find recent article in Welding Journal (Aug 2010) discuss about this issue.

 

Regards

 

K.Babu

Singapore

 

----- Original Message -----

From: limesh M

To: Materials & Welding

Sent: Wednesday, October 27, 2010 6:12 PM

Subject: [MW:7868] WQT- Number of Welders Issue

 

Dear All,

Design Code – ASME B31.3

Welding Code – ASME BPV SEC IX

Can I use multiple welders in a single test coupon for WQT.ie, two welders one half with two process (6 o'clock to 12 o'clock) and other half (6 o'clock to 12 o'clock) another two welder with two process(Suppose all welders are crossing the minimum 6"(150 mm) length)?

Is there any clause insisting that one welder has to weld the entire pipe circumference irrespective of diameter?

 Regards,

 Limesh

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