Interpretation Detail  
Standard Designation: BPV Section IX
Edition/Addenda: 2010
Para./Fig./Table No: QW-403.5
Subject Description: SC IX; QW-403.5 - Procedure Qualification with Dissimilar Base Materials
Date Issued: 12/01/2014
Record Number: 14-1656
Interpretation Number : IX-15-15
Question(s) and Reply(ies):

Background: A test coupon has been welded using SA-333 Gr. 6 (P-No.1 Group 1) to SA-350 Gr. LF2 (P-No.1 Group 2) resulting in an impact tested (weld and both heat-affected zones) Procedure Qualification Record.

Question: May a WPS be written, supported by this PQR using the variables qualified, for welding all P-No.1 Group 2 materials to themselves, e.g. API 5L X65?

Reply: Yes

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