hi, Muhammad.
First of all the important criteria for you to qualify a welder is a valid WPS. Read 4.22.
My logic is if a WPS is acceptable, why shouldn't a welder qualification be acceptable using the same WPS. However as AWS D1.1 does not speak of Weld Metal Thickness and Base Material Thickness, instead it only speaks of the size of the coupon to qualify a range, I am of the opinion that you can qualify 1 welder for 2 processes using one coupon, provided you have a WPS.
However the Hot Pass will be qualified WITH BACKING ONLY.
Using the same as mentioned above, I am qualifying now a single welder for 2 processes using 1 coupon and a combined process WPS. I may still be wrong, Would appreciate if anybody can tell me if I am wrong and why.
Regards
Rudolf
On Monday, 20 January 2014, 20:27, Asim Munir <asimmunir.002@gmail.com> wrote:
Dear All
Can Anybody answer Mr. Biju's Question, I have same question with API 1104
Thanks in advance
Thanks & Regards
MUHAMMAD ASIM MUNIR
Surveyor Industry Department
Surveyor Industry Department
Bureau Veritas - Dubai
Mobile. +971555184232
"QUALITY IS MORE IMPORTANT THAN QUANTITY"
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On Fri, Jan 10, 2014 at 9:04 AM, Pottayil, Biju <Biju.Pottayil@leicon.com.au> wrote:
--Hi Gents,I would like to request your expert advice regarding the WQT (Welder Qualification Test) using AWS D1.1.AWS does not have a provisions for qualifying a welder on a single test coupon using multiple welding processes. AWS WQT is based on the range of the welder's qualifications is based on the thickness of the test plate, not the thickness of the weld deposit like ASME IX. Also AWS specified that the welders are qualified during the Procedure qualification. As per the Code There is no-where written that WQT can be performed with multiple process, except for procedure qualifications.?Question 1: Could you please confirm that the above mentioned statement is correct "Welders shall be qualified with single process on single test coupon"? ASME Section IX where the welder is qualified for a range of deposit thicknesses. Thus, multiple welding processes can be used on the same test coupon and the welder can be qualified for multiple welding processes simultaneously.Question 2: Client had accepted few Welder qualification in-past (Before I join the project) where it was qualified dual process in single test coupon using an approved WPS (R&H – SMAW, F&C – FCAW). Please clarify whether Engineer/Client has the right to accept a non-confirming quals accordance to AWS D1.1 Clause 1.3.1, just to make sure it won't bite back me later stage.Regards,Biju Kurian Pottayil
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