Please See UW-38 in Section VIII Divsion 1 for the weld repairs those occure during construction.
For the weld repairs of the vessels placed in service, see NBIC nb23 or API 510.
Both Codes refer to Section IX for WPS, PQR, WQT, WOQT completly or partially\.
Nasir
Welding Engineer
DESCON ENGINEERING LIMITED
PAKISTAN