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The U stamp certifies that a manufacturer meets the quality control system requirements laid out in the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC). Manufacturers with this stamp are permitted to design, fabricate, inspect, and test unfired pressure vessels.

The U stamp certifies that a manufacturer meets the quality control system requirements laid out in the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC). Manufacturers with this stamp are permitted to design, fabricate, inspect, and test unfired pressure vessels.

(Alternative Form for Single-Chamber, Completely Shop- or Field-Fabricated Vessels Only) As Required by the Provisions of the ASME Boiler and Pressure Vessel Code Rules, Section VIII, Division 1.

(Alternative Form for Single-Chamber, Completely Shop- or Field-Fabricated Vessels Only) As Required by the Provisions of the ASME Boiler and Pressure Vessel Code Rules, Section VIII, Division 1.

The firm that completes any repair to a pressure vessel must hold a valid certificate of authorization to use the copyright-protected repair symbol of the National Board, commonly referred to as a “R”-stamp. The R-stamp may authorize repairs to be made at the repair firm or a field location, or both.

The firm that completes any repair to a pressure vessel must hold a valid certificate of authorization to use the copyright-protected repair symbol of the National Board, commonly referred to as a “R”-stamp. The R-stamp may authorize repairs to be made at the repair firm or a field location, or both.

U Stamp. The U stamp certifies that a manufacturer meets the quality control system requirements laid out in the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC). Manufacturers with this stamp are permitted to design, fabricate, inspect, and test unfired pressure vessels.

U Stamp. The U stamp certifies that a manufacturer meets the quality control system requirements laid out in the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (BPVC). Manufacturers with this stamp are permitted to design, fabricate, inspect, and test unfired pressure vessels.

Often referred to as the “birth certificate” of a pressure vessel or heat exchanger, the data report (U-1 or U-1A, U-3 form) is a document supplied by the manufacturer which describes the specifications, materials used, types of welding employed, etc., for the construction of an ASME certified vessel or heat exchanger.

Class I railroads are required to file an Annual Report of Finances and Operations, known as the R-1, that contains information about their finances and operating statistics.

Often referred to as the “birth certificate” of a pressure vessel or heat exchanger, the data report (U-1 or U-1A, U-3 form) is a document supplied by the manufacturer which describes the specifications, materials used, types of welding employed, etc., for the construction of an ASME certified vessel or heat exchanger.

The ASME U Stamp is an indication that the pressure vessels adhere to ASME's guidelines including design, fabrication, inspection, and testing. It is used for the certification and acceptance of pressure vessels. Seeing the “U” symbol on a product ensures that it meets the latest edition of the Code.

Class I railroads are required to file an Annual Report of Finances and Operations, known as the R-1, that contains information about their finances and operating statistics.

in ance with provisions of the National Board Inspection Code.

The ASME U Stamp is an indication that the pressure vessels adhere to ASME's guidelines including design, fabrication, inspection, and testing. It is used for the certification and acceptance of pressure vessels. Seeing the “U” symbol on a product ensures that it meets the latest edition of the Code.

The “U” stamp is for the “Fabrication of New Pressure Vessels”. The “R” stamp is for the “Repairs & Alterations of Pressure Vessels”. These stamps signify IAM's processes for the fabrication and repairs of ASME pressure vessels.

in ance with provisions of the National Board Inspection Code.

The Department of Transportation requires any repairs on an ASME component — the shell or tank of a pressure vessel — to be performed by a welder in a qualified shop that has the R Stamp certification, which means the welder is certified by the National Board of Boiler and Pressure Vessel.

The “U” stamp is for the “Fabrication of New Pressure Vessels”. The “R” stamp is for the “Repairs & Alterations of Pressure Vessels”. These stamps signify IAM's processes for the fabrication and repairs of ASME pressure vessels.

Any repairs to the pressures zones on tanks require an R-Stamp. A code repair is when a vessel's “pressure boundary” needs repair. This could either be a cooling/heating jacket or the tank itself. A 'non-code' repair is when the non-pressure area of a tank needs repairing.

The Department of Transportation requires any repairs on an ASME component — the shell or tank of a pressure vessel — to be performed by a welder in a qualified shop that has the R Stamp certification, which means the welder is certified by the National Board of Boiler and Pressure Vessel.

For information on placing large orders or if you have questions: Please call the National Board Order Department at 614.888. 2463 or email orders@nbbi.org.

Any repairs to the pressures zones on tanks require an R-Stamp. A code repair is when a vessel's “pressure boundary” needs repair. This could either be a cooling/heating jacket or the tank itself. A 'non-code' repair is when the non-pressure area of a tank needs repairing.

For information on placing large orders or if you have questions: Please call the National Board Order Department at 614.888. 2463 or email orders@nbbi.org.