We have to manufacture air cooled heat exchanger in accorance with Appendix 13 of ASME Section VIII Division 1. Mterial is duplex UNS 31803. Impact test is required per UHA-51. Do we need production test plate per UG-84(i)?
It is my understanding that UG-84(i)(3) requires one production test plate (PTP) per category A and B joint per WPS. Since in air cooled heat exchnager (rectangular headers), there is no category A or B joints, so we dont need PTP. Any advise please?
Nasir
Welding Engineer
DESCON ENGINEERING LIMITED
PAKISTAN
It is my understanding that UG-84(i)(3) requires one production test plate (PTP) per category A and B joint per WPS. Since in air cooled heat exchnager (rectangular headers), there is no category A or B joints, so we dont need PTP. Any advise please?
Nasir
Welding Engineer
DESCON ENGINEERING LIMITED
PAKISTAN