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Re: Re: [MW:14559] Welder Performance as per API 650, renewal of certificates.

By Materials & Welding

sir,


i think if no client codes are available then i think first u need to go for visual examination clearly . then u u can move on with the ndt procedures avilable then the acceptance norms as per code will be available regarding particular ndt process then u can go ahead



Regards,
srikkanth
qa/qc
india
forusree99@rediffmail.com
On Tue, 03 Apr 2012 12:00:54 +0530 wrote
> (a) When he has not welded with a process during a
period of 6 months or more, his qualifications for that
process shall expire; unless, within the 6 month period,
prior to his expiration of qualification
See this caluse on 322 if the welder is not welded for last 6 months then only a requalification calls for.otherwise his RT records will be enough for renewal.UnnikrishnanQatar

From: Biplab Pal
To: materials-welding@googlegroups.com
Sent: Sunday, April 1, 2012 5:47 AM
Subject: [MW:14035] Welder Performance as per API 650, renewal of certificates.


Dear All,

I have qualified welders as per Sec IX, 2010. Construction code is API 650.
As Per API 650 clause 8.1.2.2 one spot radiograph shall be taken in
the first 3 m (10 ft) of completed vertical joint of each type and
thickness welded by each welder or welding operator.
As per Sec-IX, QW-322.2 Renewal of Qualification
(a) Renewal of qualification expired under
QW-322.1(a) may be made for any process by welding a
single test coupon of either plate or pipe, of any material,
thickness or diameter, in any position, and by testing of
that coupon as required by QW-301 and QW-302. A successful
test renews the welder or welding operator's previous
qualifications for that process for those materials,
thicknesses, diameters, positions, and other variables for
which he was previously qualified.
Providing the requirements of QW-304 and QW-305 are
satisfied, renewal of qualification under QW-322.1(a) may
be
done on production work.
(b) Welders and welding operators whose qualifications
have been revoked under QW-322.1(b) above shall requalify.
Qualification shall utilize a test coupon appropriate to
the planned production work. The coupon shall be welded
and tested as required by QW-301 and QW-302. Successful
test restores the qualification.

I have a question that , What is the extent of examination and lowest
permissable repair for satisfactory performance of an welder.
Client code does not tell anything about that.
Please give me the answer.

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Biplab Pal
E-mail:biplab.mech@gmail.com

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