Re: [MW:14402] RE: 14374] Range of approval for WELDER qualified to weld grove welds according to API 1104
Hi there
If the WPS says its partial penetration and then you not looking at root run qualifications then Fillet weld tests are in order.
Partial Penetration Joint = Here think it as a partial V joint i.e. Consider a 10 mm plate, where the V groove is only 5 mm from the top.... and you weld it. This is partial welding. In this case, 5 mm happens to be 50% of the total thickness of the plate..hence it is called 50% partial penetration.
If you can make the inspection authority understand that your fillet weld is good enough as a test because the partial penetration is like a fillet weld just circumferential then you have nothing to worry about because im sure that is the customer is under the impression of it too.you not doing full penetration u just running stringers and its a water pipe and not a high pressure pipe so you are to be good to go
....i think the inspection body is thinking root with pen
Salman
Gem consulting
Cape town
South Africa
Salman96996@gmail.comOn Wed, May 30, 2012 at 3:53 AM, John Henning <jhenning@deltak.com> wrote:
--You don't specify the Code or standard you are working to. The case for specific fillet weld qualification is becoming more contentious, particularly with the change in the latest edition (-11) of BS EN 287 which now requires separate fillet weld performance qualification. Note that ASME Section IX does not.
To be honest, it is not unusual for a customer to impose their own set of personal peculiarities on top of the applicable Code or make recommended practices (applicable or not) mandatory. This application of singular proclivities has become common practice and unfortunately it is often more productive to simply try and comply than to apply reason. One tack you might try is that if this is the inspection agency acting alone, you can inform your customer that you will be happy to comply with the inspection agencies request but that it will add X hours to the scope and result in an additional charge of Y dollars/euros/pounds/pesos/ dracmas . . . as it is not a part of the contract.
Good luck – you have my sympathy.
John A. Henning
Welding & Materials
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Sam Malemela
Sent: Monday, May 28, 2012 1:20 AM
To: materials-welding@googlegroups.com
Subject: [MW:14374] Range of approval for WELDER qualified to weld grove welds according to API 1104
Hi Colleagues,
I am working on a pipeline construction project in Mpumalanga –South Africa. The client is a reputable water utility company in South Africa who has appointed a contractor to construct 37 km of 610mm Diameter pipeline. The joint design is Partial Joint Penetration ( by means of fillet weld). The pipe fit up is spigot and socket joint.
The appointed inspection authority is refusing to accept welder qualification for 'v' grove joint design allegedly because the client specification has asked for fillet weld and NOT butt weld.
Requalification of welders is not an issue apart from the time it will take to set up and get the qualification test done. I also know from training that range of approval for grove includes fillet welds as well.
Should I simply re-qualify the welders although their qualification covers fillet welds if range of approval is considered or should I insist on the inspection authority consulting for proper information on this matter?
The integrity of the profession is under threat if people without proper knowledge are allowed to rewrite the specifications for the industry and go unchallenged.
Your urgent response will be greatly appreciated.
MALEMELA N. S.
SITE MANAGER
SOUTHERN PIPELINE CONTRACTORS
6 Main Reef Road
DUNSWART
1508
FAX:0119144524
CELL:0823892592
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