Transport Service

“R” Stamp Shop

What’s an “R” Stamp?

An “R” Stamp is a triennial endorsement on loan from The National Board of Boiler and Pressure Vessel Inspectors which allows us to perform repairs and alterations to a variety of non-fired pressure tanks and vessels.

The “R” Stamp is required for all welding repairs performed on pressure vessels and, in addition, federal DOT law requires a holder of an “R” Stamp perform all welding repairs involving the shell of a DOT/MC specification tank. A “pressure vessel” is defined as any tank or vessel designed for operation above 15 p.s.i.g.

Qualifying for, and retaining an “R” Stamp is an involved process. The applicant must outline all repair procedures and demonstrate competence performing actual repairs. Each repair or alteration must be documented thoroughly and related documents are kept on file.

The federal governement recognizes the potential for catastrophic failure of high pressure systems which merits stringent controls over those performing repairs and alterations. We are very proud to be an “R” Stamp certified shop.

Start typing and press Enter to search