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Normally what is the best way to do this? Increase the range of the root open on the WPS and makes it much larger range than PQR or make a new WPS with some weld parameter development for that? Thanks Andyweld

Thanks for the reply. I read some documents about the challenge of UT on cast stainless steel due to course grain and anisotropic structure. Since UT is normally used on ISI, just wonder, for the PWR which used cast stainless steel for primary piping, what NDT is used? UT or RT? Thanks Andyweld

Does anyone know the NDT used for ISI of cast stainless steel coolant piping and welds in the PWR power plant? Is UT used on it? Thanks Andyweld

Thanks for the reply. Requalification is not required, but do I need to prepare anothor WPS which covers the changed root open? or use the same WPS? Thanks Andyweld

For TIG welding, according to Section IX, joint preparation is not an essential variable. But if the weld root open is much larger than in WPS or the bevel angle changed, do you need to prepare another WPS and using the same PQR? Thanks Andyweld

Brandonb73: Thank you so much for the information. It really helps.

Already reviewed QW-202.4, still confusion. If I use 0.1" as base material thickness, the qualified range is 0.0625-0.2", this range does not include 0.68" If I use 0.68" as base mateiral thickness, the qualified thickness is 0.1875" to 1.36", this range does not include 0.1" How should I...

For the attached weld coupon, what is the base material thickness I should put in the PQR? what is the range of the qualified base material thickness(QW-451.1)I should put in the WPS? Thank you so much for your help.

Thanks for the reply. One more question, normally what filler material is used for TIG welding this material?

Thanks for the link. Checked, doesn't seem it is on it.

Does anybody know the P NUMBER (or S number) FOR TOOL STEEL W1 for procedure qualification? Thanks

What are the relationship between these two codes regarding piping design (such as primary loop piping) and joint design and welding fabrication? Thanks in advance.

Thank you so much for your reply.

I have a question about the WPS and PQR coupon welding, does the coupon have to be welded by welding operator who is qualified in accordance with ASME section IX?

Thanks for all your information, metengr.

metengr: Thanks again for your time and reply. I do not have positioner to rotate the pipe for 1G welding on pipe. And the equipment I have for doing the test is the one will be used on production. We have some standard format for WPS and PQR, but for this job, we also need to provide welding...

Thanks for your time and comments, Metengr. I am new for using the code and I really appreciate your help. The process is automatic TIG welding. Material for the canister is 304 stainless steel and impact test is not required. The production parts for the canister lid has 45° and 30° compound...

I am working on WPS and PQR for canister lid welding and have some questions about the test coupon preparation. The wall thickness of the canister structure lid is 3" wall thickness (which will weld to the outer shell of the canister) and have a 30° bevel angle with 1.25" deep. But the weld...