Impact Testing
Impact Testing
(OP)
I have a weld procedure that was qualified and approved a few years ago WITHOUT impact testing. Since then we have welded a second test coupon (using the same procedure) and have had it tested again (tensile, bend tests) but this time WITH impact tests. Now my question is: What are the codes/rules regarding impact testing that was done after-the-fact? Can the results simply be "updated" or added to the existing WPS/PQR without having it recertified with TSSA? Or do i need to create an entirely new PQR using the results from the new coupon and have it sent out to be certified?





RE: Impact Testing
For example, Sample#1 was welded using WPS-X and was sent out for for tensile and bend tests, and Sample#2, also welded using WPS-X, but welded on a seperate date as a seperate piece, was sent out for impact testing.
All else being equal (same WPS, same thicknesses), can the results from the two seperate samples be combined onto one single PQR and sent out to be certified?
Does the PQR absolutely need to every single test result come from coupons from one single sample that was welded as one continuous weld?
RE: Impact Testing
Hg
Eng-Tips policies: FAQ731-376: Eng-Tips.com Forum Policies
RE: Impact Testing
RE: Impact Testing
As you evidently intend to do, a WPS may be supported by multiple PQR's. It sounds as though you performed tensiles and bends on the second coupon, and, if so, that isn't necessary to add impact qualification to an existing PQR.
Review QW 200 and the supplementary requirements for the process you are qualifying.
RE: Impact Testing
I should have added that using material for your supplementary test plate of identical thickness to the original test plate is not necessary and may not be desirable, depending on the range of thicknesses you want to qualify for.
RE: Impact Testing
QW-200.2(c) deals with changes made to a PQR. It states that "All changes to a PQR require recertification". But I haven't really made any changes per se. The second sample, the one that was impact tested, was welded using all the same variables as the original sample that was used for the PQR. I simply want to add supplementary test results.
RE: Impact Testing
Hg
Eng-Tips policies: FAQ731-376: Eng-Tips.com Forum Policies
RE: Impact Testing