Welding Specifications 1

[primetech]

I have a vendor who was asked to weld an small electrical cabinet from 304L stainless steel in acordance with D1.3.

He has submitted an internal welding procedure which refers to MIL-STD 1595A Welding Operators Qualification Tests and MIL-STD-2219 Fusion Welding for Aerospace Applications.

The individual welder has been qualified by an outside, independent, testing lab in accordance with MIL-STD-1595A.

His opinion is that the documentation he has supplied is sufficient to satisfy the contract requirements.

Are the vendor's submittals as good as or better than D1.3? Would the paperwork he has submitted qualify him for D1.3 (being as good or beter than)? If not, what else would be needed.

Anyone's help on this would be greatly appreciated, as there is a good deal of time and effort expended on this project which could potentially have been in vain.

Thanks in advance.

 

[CWIC]

primetech:
1.) Please refer to D1.3-98, 4.2 as to whether the WPS submitted complies with your requirements. If your vendor insists on compliance to the D1.3 by their MIL 1595/MIL 2219 (which are both superceeded by AWS D17.1), then they should have a PQR to demonstrate the test results.

2.) The D1.3 is applicable to cold-formed steel, not corrosion resisting steels. However, AWS D1.3, 1.2.2 permits other materials may be joined, but only by procedure qualification, this is where the PQR comes in.

3.) I don't agree one code or standard is "...as good or better...", each are intended for specific applications and materials. Each of these codes has specific thickness limitations for personnel (performance) qualification.

Without knowing the specifics of the vendors previous performance qualfications, I would not venture to post any help.

IMHO
I would require the welders and procedures to comply with the specified code of your contract documents and not substitute a code/standard your vendor is telling you "...being as good or better..."