NBBI-The National Board of Boiler and Pressure Vessel Inspectors
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The National Board of Boiler and Pressure Vessel Inspectors (NBBI)

IHS Markit is your source for NBBI standards and publications.

The National Board of Boiler and Pressure Vessel Inspectors was created in 1919 to promote greater safety to life and property through uniformity in the construction, installation, repair, maintenance, and inspection of pressure equipment.

The National Board membership oversees adherence to laws, rules, and regulations relating to boilers and pressure vessels. The National Board Members are the chief boiler inspectors representing most states and all provinces of North America, as well as many major cities in the United States.

National Board Inspection Code
This American National Standard has been adopted by most states and cities, all Canadian provinces, and federal regulatory agencies including the US Department of Transportation. It is the only standard recognized worldwide for inservice inspection repairs and alterations of boilers and pressure vessels.