national board pressure vessel certification

National Board of Boiler and Pressure Vessel Inspectors. This publication lists the combination capacity factors to be used with a specific rupture device and relief valve by manufacturer rupture device/valve models. Ĭombination capacity factors that have been determined by test and are acceptable to use are compiled by The National Board of Boiler and Pressure Vessel Inspectors in the Pressure Relief Device Certifications publication, NB-18 or the so-called Red Book. National Board of Boiler and Pressure Vessel Inspectors, USA, 1998. Any repair, however, is acceptable if it is made in accordance with the rules of the Pressure Vessel Code. The National Board Inspection Code, published by the National Board of Boiler and Pressure Vessel Inspectors, Columbus, Ohio, is helpful. The stamps, however, may be apphed to a vessel only with the approval of the inspector. The ASME Code Committee authorizes fabricators to use the various ASME stamps. An inspector employed by a vessel user may authorize the use of only the ASME stamp. Inspeciors so qualified and employed by an insurance company state, municipality, or Canadian province may inspect a pressure vessel and permit it to be stamped ASME-NB ( National Board).

One of the board s imporiant activities is providing examinations for, and commissioning of, inspectors.

This board promotes uniform enforcement of boiler and pressure-vessel rules. National Board of Boiler and Pressure Vessel Inspection Authority The National Board of Boiler and Pressure Vessel Inspectors is composed of the chief inspectors of states and municipalities in the United States and Canadian provinces which have made any pari of the Boiler and Pressure Vessel Code a legal requirement.

National board pressure vessel certification