1 PQR Can raise 2 WPS? According To AWS? 3

[Aliq298]

Dear All expert,

Any1 who have an experience in AWS Standard. is it true we can built 2 WPS using 1 PQR? same like asme code? which clause should i refer to? because i can't found in section 4.

Thank you.

Regards,

 

[Duwe6]

You are looking for something that isn't there [thus you can't find it]. There is no AWS limitation on the number of WPS's that can be generated from one PQR. The only limitation you will find is the requirement to stay within the AWS limits on the Essential Variables, which are different than the ASME limits.

 

[Kiwi2671]

Duwe6,
The interpretation below seems to state you can't create multiple WPS's from 1 PQR (or am I reading it completely wrong).
Your thoughts ?,
Regards,
Kiwi

Subject:
Code Edition: Dl.1-90
Code Provision: Subsection 5.5
Qualification of Multiple Welding Processes
AWS Log: 1-9/9 1-1 0-03
Inquiry: (I) Can one or more welding processes be deleted from a qualified welding procedure in accordance with AWS D1.l, subsection 5.5, if each of the essential variables for each of the remaining processes is maintained?

(2) Based on a qualified welding procedure involving a GMAW root pass, SMAW backweld, and SAW fill and cap passes; [can this WPS] be separated into its component parts to qualify other WPSs, as shown in the Inquiry letter?
Response: (1) No.
(2) No, the acceptance or rejection of specific WPSs is beyond the authority of the D1 Committee.

 

[SectionIX]

I would imagine that you could build multiple WPS' from a single PQR as long as essential variables are not changed. Seems more of an acedemic exercise; as an example, if you had a SMAW PQR qualified for 3/8" to unlimited at 6G, you could make a WPS limited from 3/8" to 3/4" for fla and horizontal; another WPS 3/8" to unlimited, all positions, etc.

Not that you would want to....but could be applied to certain applications/personnel...

 

[Mr168]

Per that interp, which is applicable to the 1990 Edition of the Code, there's nothing prohibiting you from writing multiple WPS's. What it prohibits you from doing is qualifying a PQR coupon with multiple processes, and then segregating those processes from one another. e.g., I can't run a GTAW/SMAW combo plate and write separate GTAW and SMAW WPS's like you can in ASME.

It's probably worth submitting an official interp on it. There has been discussion among committee members regarding the possibility of validating/upholding interp responses over new Code year editions, and this one may be a good example.