ASME - Welding Procedure Specification
ASME - Welding Procedure Specification
(OP)
Hi,
We recently did a Repair on a MC331 propane tank. It was to fix a pinhole in the weld that joins the coupling on to a tank head. With all the paper work involved, I understand that we should also include a Welding Procedure Specification & Welding Procedure Qualification Record.
My company already has a few WPSs & WPQs. But I am not sure which one of them would match the procedure that we have done(The base material and filler material on those WPS do not match the ones that we have used on this repair.) So I am wondering if I have to fill out new WPS & WPQ. And if I do fill out new ones, do we have to get them qualified ?
I would appreciate any help regarding this. I am new to this field and still getting a grip of all the procedures.
Repair Details: Head material - SA612, Coupling Material: SA105, Welding Rod used - E8018 C1. Kindly let me know if anybody needs more info.
Thanks !
We recently did a Repair on a MC331 propane tank. It was to fix a pinhole in the weld that joins the coupling on to a tank head. With all the paper work involved, I understand that we should also include a Welding Procedure Specification & Welding Procedure Qualification Record.
My company already has a few WPSs & WPQs. But I am not sure which one of them would match the procedure that we have done(The base material and filler material on those WPS do not match the ones that we have used on this repair.) So I am wondering if I have to fill out new WPS & WPQ. And if I do fill out new ones, do we have to get them qualified ?
I would appreciate any help regarding this. I am new to this field and still getting a grip of all the procedures.
Repair Details: Head material - SA612, Coupling Material: SA105, Welding Rod used - E8018 C1. Kindly let me know if anybody needs more info.
Thanks !





RE: ASME - Welding Procedure Specification
RE: ASME - Welding Procedure Specification
RE: ASME - Welding Procedure Specification
Thank you for the inputs. I am reading all the welding variables and trying to fill out the WPS & WPQ.
About QW400, why is it that all the variables have a definition starting with 'change in' or 'increase/decrease', 'deletion/addition' ?
Also, can one WPQ qualify more than one WPS ?
RE: ASME - Welding Procedure Specification
Yes, you can qualify multiple weld procedures with a single PQR (procedure qualification record)provided that all variables are properly addressed by the PQR and included in the WPS. Multiple PQR's can also be used to write a single WPS. Just be careful about the variables. A WPQ is for the Welder Performance Qualification. The nomenclature can be confusing.
RE: ASME - Welding Procedure Specification