Your reasoning is flawed and your answer incorrect.
Welding position is specified as per the position of work piece before and during welding. Position of welding is specified in ASME section IX and EN ISO 6947. Welding position is essential variable for welders so understanding of same is so much important for a welding instructor. Section IX of the BPVC contains rules relating to the qualification of welding, brazing, and fusing procedures as required by other BPVC sections for component manufacture. Sep 24, 2020 It means that a particular welding procedure specification (WPS) gets qualified for a particular thickness range and if we have to weld beyond that thickness range then we need a new WPS and procedure qualification. The thickness range for which a Welding procedure specification (WPS) gets qualified is given in ASME BPVC section IX Table QW 451.1.
Another example of reading the QW-4xx variables out of context.
QW-405.2 typically applies to general process qualification (groove welds, etc.).
QW-405.4 apples to special process qualifications (Hard facing or corrosion resistant overlay).
Asme Section Ix Welder Qualification
These two variables are never called out together.
Regarding the application of supplementary essential variable QW-405.2, I suggest you read Interpretation IX-81-24 reply to question 1 states :
Reply (1): When applying QW-405.2, any position not involving the vertical uphill progression will qualify for all positions, except those involving the vertical uphill progression. Any position involving the vertical uphill progression win qualify for all positions, including those involving the vertical uphill progression. For example, qualification on a test coupon in the 2G position will qualify 4G and 5G downhill, but not 3G uphill. Qualification on a test coupon in 3G uphill progression will qualify 4G, 6G uphill progression, and all other positions.
Asme Section 9 Welding Certification
John A. Henning
Welding & Materials
Asme Ix Welding Positions Near Me
Asme Section Ix Free Download
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