While your customer is being a bit thick, I think you can show the essence of what the Code means by an old interpretation, IX-83-70. As noted by HSB this interpretation is more limiting than the current Code but the essence is that for a given filler metal, i.e. F-number, the welder can be qualified by alternative base metals. In the case of the interpretation the filler metal is SMAW and desired result is to weld nickel based base metals. The Code Case clearly states that welding P1 to P1 with the appropriate filler metal qualifies welding P4X. One could also look at Interpretations IX-86-51 and IX-89-15.
Status Description: QW-423.1 has expanded the range of qualified production base metals beyond those listed in the Question. (2010 Edition)
Interpretation: | IX-83-70 |
Subject: | Section IX, QW-310.5(c) |
Date Issued: | June 27, 1983 |
File Number: | BC83-270 |
Related Documents: |
Question: A manufacturer has qualified WPS for welding P-Nos. 41 through 45 with the SMAW process using the appropriate filler metals. May a welder be qualified using the SMAW process for welding P-Nos. 41 through 45 by welding a test coupon of these P-Numbers or combinations thereof, or P-No. 1 welded to itself or to any of the above P-Numbers using the filler metal of the qualified WPS?
Reply: Yes.
The above interpretation was transcribed by HSB Code Services from the official publications [ASME published volumes, National Board, Eurodyne]. Although every effort was made to accurately reproduce this interpretation, use of this information should be for research only. It is strongly recommended that the official published document be used for Code business.
Beyond that QW-423.1 reads (in part) “. . . When a base metal shown in the left column is used for welder qualification, the welder is qualified to weld all combinations of base metals shown in the right column . . .”. Last I checked, all means ALL. All would include any combination of the listed base metals welded to themselves.
Good luck. Customers with only a little knowledge can be a giant pain in the derrière.
John A. Henning
Welding & Materials
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Zakaria ghrab
Sent: Monday, March 26, 2012 12:04 PM
To: materials-welding@googlegroups.com
Subject: [MW:13997] ASME sect IX - Welders Performance Qualification
Dear Experts,
I need some confirmation / explain from your part.
I have welders qualified for GTAW process in carbon steel coupon test material, according my understanding for ASME sect IX welders performance qualification, welders is qualified to weld Stainless steel under all essential variable requirement are ok. IT's our case (Same FN°6 filler metal, added backing gas....).
But our client, said that, according ASME sect IX QW-423.1, welders can not be qualified to weld Stainless steel (PN°8) , it's mention that "When a base metal shown in the left column is used for welder qualification, the welder is qualified to weld all combinations of base metals shown in the right column" means as their explain, Welder qualified with carbon steel coupon can weld CS to one of (PN°1 to PN°11) but not PN°X to PN°X, X from 1 to 11.
Can you confirm if i'm right and how to get confirmation from ASME sect IX, means what's the means of "combination" in ASME sect IX QW-423.1).
Regards
----
Zakaria
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