PLEASE GO THROUGH QW 306 when any welder qualifies less than 13mm thk his maximum range is 2 T ONLY NO COMBINATION COMBINATION MEANING IS DEIFFERENT JUST GO THROUGH qw 306.
QW-306 Combination of Welding Processes
Each welder or welding operator shall be qualified within
the limits given in QW-301 for the specific welding process(
es) he will be required to use in production welding.
A welder or welding operator may be qualified by making
tests with each individual welding process in separate test
coupons, or with a combination of welding processes in a
single test coupon. 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.
For combination qualifications in a single test coupon, the
limits for thicknesses of deposited weld metal, and bend
and fillet testing are given in QW-452 and shall be considered
individually for each welder or welding operator for
each welding process or whenever there is a change in an
essential variable. A welder or welding operator qualified
in combination on a single test coupon is qualified to weld
in production using any of his processes individually or in
different combinations, provided he welds within his limits
of qualification with each specific process.
Failure of any portion of a combination test in a single
test coupon constitutes failure of the entire combination.
On Tue, 09 Nov 2010 16:41:58 +0530 wrote
>
But, maximum they can deposit 12mm on the particular
joint.
With kind regards,
Malai.
From:
materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of george.dilintas@gr.bureauveritas.com
Sent: Monday, November 08, 2010
10:38 AM
To:
materials-welding@googlegroups.com
Subject: Re: [MW:8135] weld
thicness
Yes if the other essential
performance qualification parameters (process, F no, P No etc) are not altered
Dr.
G. Dilintas - Authorized Inspector Supervisor
I&F Regional Technical Manager
Bureau Veritas Piraeus - Greece
Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
Cell: +30 69 44 64 62 04
Ahmed Husain
Ahmed Husain
Sent
by: materials-welding@googlegroups.com
07/11/2010 12:38
Please
respond to
materials-welding@googlegroups.com
To
materials-welding@googlegroups.com
cc
Subject
[MW:8122] weld thicness
Ref
Dear All,
I need your valuable information/comment on
following case.
There is a situation where 2 welders are
qualified to weld 12mm thick. Ifthe job thickness is 20 mm and dia, say is 36",
contractor divide the joint in half. First simultaneously, each will weld
approx 10mm thick including root half the circum, as they are qualified in 12
mm only. Then the interchange their location and they will complete the
remaining welding. Basically these 2 welders who are qualified upto 12 mm are
welding 20mm thickness joint, but at any given location they are welding 10mm
thickness.
Is this practice is acceptable.
Regards,
Ahmed
H.
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Dear Sir,
Thanking You,
Honesty is the best Policy
With Warm Regards,
Muthu Barathi P
Mobile No:00962788269821 (Jordan)
00962775401951
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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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