Wednesday, March 19, 2014

Re: [MW:20379] Tack welding

Is that a tack weld which is going to remain on place?
If not, you need neither a qualified WPS nor a qualified welder
Best regards
Dr Georgios Dilintas
Authorized Nuclear Inspector
Authorized Inspector Supervisor
HBS Regional Technical Manager


  From: mahammed javeed [javeedcwi@gmail.com]
  Sent: 03/19/2014 08:03 AM ZE3
  To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
  Subject: [MW:20376] Tack welding


Gentle men,

My question regards to the tack welding. I have to make a  bridge tack weld on a 2" SS pipe. As per my company procedure tack welding shall be done by a qualified welder with a qualified procedure. 

As per my knowledge bridge tack is a fillet weld and if a welder is qualified on 6G position on a pipe he is qualified to do so. 

The problem with my client is he said the procedure is not qualified as the base metal thickness qualified for the WPS is 1.5mm to 8.4 mm and the actual base metal thickness is 8.7mm. 

As it is a fillet weld I think the WPS is qualified for tack welding also

Hope to get your clarification on this subject.

Best Regards
M. Javeed

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