You are on the right path. a PQR always remain valid, if they meet all the requirement of the ASME Boiler and Pressure Vessel Code Section IX -1962 edition or latest edition. See QW -100.3
Question #2. QW-424 specifies that test coupon made from unassigned material to unassigned material is qualified for unassigned material to itself. Since there is no code describes its material grouping (like P range in ASME IX), to know exactly how you can weld S 355 JR to S 355JR and S 275 JR to S 275, it can only be evaluated by qualifying a PQR.
Rgds
2011/3/27 manoj john <manojacgnr@gmail.com>
Dear members,
I have one query regarding WPS.
1) One of my client made a comment on a WPS which i had submitted to
them for approvel that Procedures are from 2001. My question is Is
there any time limit for WPS? In my knowledge answer is No, a
qulified procedure can be used any time without changing the essential
variable.
2) I have one qualified wps with base metal S 355 JR to S 275 JR.
Can I use this WPS to weld S 355 JR to S 355 JR and S 275 JR to S 275
JR?
Please clear my doubts, if possible with code reference.
Thanks & Regards.
Manoj
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