Adalius
Mechanical
- Feb 13, 2009
- 57
I've gone over D1.1 a few times, talked with a CWI friend, and talked with one of the members of the AWS D1 committee who used to be my instructor, in regards to this question and I've gotten different responses from both parties and nothing that I can find is concrete in the standard to support either stance so hopefully someone here can shed some light on this.
After reading Section 3 and the other small clauses as they pertain to WPSs, I can find nothing stating any minimum credentials for writing a WPS that is prequalified. That is to say, as I'm reading it right now, Joe Schmoe can write a WPS for a prequalified joint so long as the WPS variables are within those outlined in the tables. Once you go outside of that, a PRQ and testing are required at which point a CWI (or higher) would have to get involved.
The CWI tells me that he believes a CWI has to write the WPS even for prequal'd. The D1 committee member who helped write the standard says I'd be fine to write it "as long as you don't cross over to needing a PRQ, then you'd need a CWI." which jives with my interpretation.
The closest thing I can find, which is what the CWI is citing to support his argument, is in B5.1 (Specification for Qualification of Welding Inspectors) under Table 1 - Procedure Qualification it says '(7) Develop Welding Procedures' and only has a Senior Welding Inspector marked which he interprets to mean only a SWI can write WPSs which I said can't possibly be the case given that almost every CWI writes WPSs.
So, is there any specific language in regards to D1.1 (or D1.5, as I deal with that standard as well) that says WPSs must be written from the ground up by CWIs or their equivalents?
After reading Section 3 and the other small clauses as they pertain to WPSs, I can find nothing stating any minimum credentials for writing a WPS that is prequalified. That is to say, as I'm reading it right now, Joe Schmoe can write a WPS for a prequalified joint so long as the WPS variables are within those outlined in the tables. Once you go outside of that, a PRQ and testing are required at which point a CWI (or higher) would have to get involved.
The CWI tells me that he believes a CWI has to write the WPS even for prequal'd. The D1 committee member who helped write the standard says I'd be fine to write it "as long as you don't cross over to needing a PRQ, then you'd need a CWI." which jives with my interpretation.
The closest thing I can find, which is what the CWI is citing to support his argument, is in B5.1 (Specification for Qualification of Welding Inspectors) under Table 1 - Procedure Qualification it says '(7) Develop Welding Procedures' and only has a Senior Welding Inspector marked which he interprets to mean only a SWI can write WPSs which I said can't possibly be the case given that almost every CWI writes WPSs.
So, is there any specific language in regards to D1.1 (or D1.5, as I deal with that standard as well) that says WPSs must be written from the ground up by CWIs or their equivalents?