I’m not sure about NBIC requirement, but I know that ASME Sec VIII does not address the inspection and repair requirement of PV that has been placed in service. API 510 is the inspection code covers the in-service inspection, repair, alteration, and rerating activities. This inspection code applies to all refining and chemical process vessels that have been placed in service.
API 510 allows a repair organization, anyone below who makes repairs in accordance with the inspection code:
a. The holder of a valid ASME Certificate of Authorization that authorizes the use of an appropriate ASME Code symbol stamp (e.g. U-stamp).
b. The holder of a valid R-stamp issued by the National Board.
c. An owner or user of pressure vessels who repairs his or her own equipment.
d. A contractor whose qualifications are acceptable to the pressure-vessel owner or user.
e. An individual or organization that is authorized by the legal jurisdiction.
The API 510 authorized pressure vessel inspector is responsible to the owner/user to assure that the inspection, NDE, and pressure testing activities meet API 510 requirements. The inspector shall be directly involved in the inspection activities, which in most cases will require field activities to ensure that procedures are followed, but may be assisted in performing inspections by other properly trained and qualified individuals, who are not inspectors e.g. examiners and operating personnel.
~Joey~
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