ASME Sec. VIII 2013 Div. 1 Repairs question
ASME Sec. VIII 2013 Div. 1 Repairs question
(OP)
I am trying to figure out if there is a limit on repairs of a weld joint before the HAZ needs to be cut out. Currently we repair a part for a customer about once a year and we continually have done this on that part about 8 times. Neither UG-78 or UW-38 cover anything on this so im stuck and would like input from the experts. Thanks in advance.





RE: ASME Sec. VIII 2013 Div. 1 Repairs question
RE: ASME Sec. VIII 2013 Div. 1 Repairs question
RE: ASME Sec. VIII 2013 Div. 1 Repairs question
Making a decision would require getting some materials engineers involved to evaluate how the welding which has been historically performed may have impacted the steel's properties. You might start with some hardness testing to get some feel for how this material is currently behaving.
RE: ASME Sec. VIII 2013 Div. 1 Repairs question
As mentioned above, repairs during post construction (in service) would fall either under the NBIC or API 510 for guidance. Regarding this specific question, repairs on certain materials, like carbon steel, can be repaired an unlimited number of times IF the material is not impact qualified with PWHT. If the material is impact qualified along with the WPS (weld and HAZ), the number of times for repair is dictated by the aggregate time qualified for production PWHT.