ASME Codes and Standards

ASME is one of the oldest standards-developing organizations in America. It produces approximately 600 codes and standards covering many technical areas, such as fasteners, plumbing fixtures, elevators, pipelines, and power plant systems and components. ASME’s standards are developed by committees of subject matter experts using an open, consensus-based process. Many ASME standards are cited by government agencies as tools to meet their regulatory objectives. ASME’s standards are used in more than 100 countries and have been translated into numerous languages.

Certificate of Authorization

The named company is authorized by the American Society of Mechanical Engineers (ASME) for the scope of activity shown below in accordance with the applicable rules of the ASME Boiler and Pressure Vessel Code. The use of the certification mark and the authority granted by this Certificate of Authorization are subject to the provisions of the agreement set forth in the application. Any construction stamped with this certification mark shall have been built strictly in accordance with the provisions of the ASME Boiler and Pressure Vessel Code.

National Board Accreditation

Repairs and alterations are essential in maintaining pressure equipment integrity. These can vary from simple welded repairs to the repair of safety relief valves. The National Board administers three accreditation programs for organizations performing repairs and alterations. Accreditation involves a thorough evaluation of the organization’s quality system manual including a demonstration of its ability to implement the system. Authorized repair organizations are issued symbol stamps for application to equipment nameplates signifying the integrity of work performed.

The R Certificate of Authorization is issued to an accredited organization performing repairs and alterations to pressure-retaining items. The VR Certificate of Authorization is provided for repairs and modification to pressure relief device (R and VR stamps are required in a number of U.S. jurisdictions.)  The NR Certificate of Authorization is issued for repairs and replacement of nuclear components.  All National Board code symbol stamps are registered trademarks of The National Board of Boiler and Pressure Vessel Inspectors.