Welder Qualification for PJP

By yojimbo (***)

Date 05-10-2019 02:05

I have only ever qualified for CJP and fillet welds to various codes. What testing/examination is required for a prequalified WPS PJP Welder Qualification Record? Assume a D1.1 code requirement. Are coupons bent? Would not a PJP crack/fail automatically?

By 803056

Date 05-10-2019 12:48

There is no "standard" welder qualification test for PJP. AWS has "specially devised" qualification tests that are "required". Each is depicted by the appropriate figure in Clause 4.

Once a required test is completed utilizing a CJP, why would the contractor want to administer a second qualification test consisting of a PJP coupon?

The wiggle room is to qualify a WPS for PJP that includes visual, volumetric NDE, tensile, and bend tests. Silly route to take, but it can be done.

Al

By yojimbo (***)

Date 05-10-2019 21:55

The logic is clear, however, suppose a manufacturer only needed a PJP weld[s] for a product and either could not locate or did not want to pay sufficiently skilled help that would be able to perform reliable CPJ welds. I get that the CJP covers the PJP, and the corollary is not true. That is the intent of my question.

By 803056

Date 05-11-2019 01:27

Then they don't have the minimum skills to meet AWS D1.1.

Al