Subraman
Mechanical
- Feb 12, 2009
- 3
Hello,
I need expert opinion on API RP 591 certification process, which involves a) Visual, b) Dimensional, c)Performance and d) Material qualification (Physical/chemical/NDT). When valve is designed to say API600, 602 etc, and the design takes care of suitability of all materials, means design remains same for WCB, WC6, CF8M etc., then why do the qualification of all material category, as called for by RP 591.
Wall thikness, dimensions, bolting, stem dia, handwheel, valve operation etc etc is common, and once that is established with say WCB material, the same is applicable for all other other material as well.
If there is laid down vendor management system, right from ordering to receipt of material, which ensures compliance of material specification, calling for performing Verification to Table D1, D2 seems repetition, and to gather sample lot etc has practical issues.
Is there any forum in API to get his verified? Has anyone already sought and got clarification?
Regards Subraman
I need expert opinion on API RP 591 certification process, which involves a) Visual, b) Dimensional, c)Performance and d) Material qualification (Physical/chemical/NDT). When valve is designed to say API600, 602 etc, and the design takes care of suitability of all materials, means design remains same for WCB, WC6, CF8M etc., then why do the qualification of all material category, as called for by RP 591.
Wall thikness, dimensions, bolting, stem dia, handwheel, valve operation etc etc is common, and once that is established with say WCB material, the same is applicable for all other other material as well.
If there is laid down vendor management system, right from ordering to receipt of material, which ensures compliance of material specification, calling for performing Verification to Table D1, D2 seems repetition, and to gather sample lot etc has practical issues.
Is there any forum in API to get his verified? Has anyone already sought and got clarification?
Regards Subraman