Use of PQR (Multiple process) in making WPS(single process)

[Biplab Pal]

Dear Experts,

I have a PQR of combine of process of GTAW (3mm)+ SMAW(12mm)+ SAW.(25mm).

Can i qualify an WPS only with GTAW with max 6 mm with other condition of the GTAW process remain same.

Can i qualify another WPS only with SMAW max 24 mm with other conditions of the SMAW process remain same.

No Impact is required.

Please give me the ASME Sec-IX references.

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Thanks & Regards
Biplab Pal
Welding Inspector

E-mail:   bipla...@gmail.com
 
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[kannayeram gnanapandithan]

Yes, QW200.4

Pandithan

Welding Consultant

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[veera raghava kommisetti]

Yes in both the cases.

 

Code Interpretations

Interpretation: IX-86-23

Subject: Section IX, QW-200.4, QW-306, and QW-407.4

Date Issued: March 21, 1986

File: BC85-553

Question (1): A Procedure Qualification Record (PQR) for a single welded joint was qualified using 1/2 in. thick base metal. GTAW was used for the first 1/8 in., and SMAW for the remaining 3/8 in. Will this PQR support a Welding Procedure Specification (WPS) for deposited weld metal thicknesses of 1/4 in. and less using GTAW?

Reply (1): Yes.

Question (2): Will the PQR in Question (1) support a WPS for deposited weld metal thicknesses of 3/8 in. and less using SMAW?

Reply (2): Yes.

Question (3): Will the PQR in Question (1) qualify a WPS for first using SMAW on 3/8 in. and less deposited weld metal thickness followed by GTAW on 1/4 in. and less deposited weld metal thickness?

Reply (3): Yes.

Question (4): The welder who successfully welded the test coupon for the PQR in Question (1) is to be used to production weld. Is it necessary to qualify this welder so that he may use the WPS in Question (1) within the variables of QW-350?

Reply (4): No.

Question (5): Is it necessary to qualify this welder so that he may use the WPS in Question (2), where the WPS uses backing, within the variables of QW-350?

Reply (5): No.

Question (6): Is it necessary to qualify this welder so that he may use the WPS in Question (2) where the WPS does not have backing in a single welded groove?

Reply (6): Yes.

Question (7): Is it necessary to qualify this welder so that he may use the WPS in Question (3) in a single-welded joint?

Reply (7): Yes.

Question (8): Is the GTAW weld deposit of the PQR considered the backing for the SMAW?

Reply (8): Yes.

Question (9): QW-407.5 uses the term "critical temperature range." Does critical temperature range mean above the upper transformation range?

Rep

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