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R Stamp Requirements

  1. R Stamp Certification Requirements
  2. R Stamp Application
  3. Stamp Requirements For Mail

'R' Stamp required or not?

ASME National Board R and vessel certification data stamp plate supply with no minimum order requirements or set up fees. Gold Medal Productions supplies ASME Certified data plate for ASME U Stamp, and National Board R Stamp and NB Mark plates.Permanent laser marked stainless steel metal plates ready for your ASME stamp on repaired, re-rated, and altered vessels. – Alterations must be performed by an organization holding an “R” stamp. – Repairs to pressure relief or pressure safety valves with the ASME code “V”, or “UV” stamps must be performed by an organization holding a “VR” stamp. – All other repairs must be performed by a.

'R' Stamp required or not?

We recently recieved a pressure vessel and installed it in our system. Before actually putting it into service we discovered a pinhole leak on one of the weld seams on the shell during a Nitrogen purge/leak test of other devices. We sent the vessel back for repair, and it arrived back without an 'R' Stamp or other documentation. Is this legal given that the vessel never was commished into service in our system, or does it require an 'R' stamp because it was initially inspected, hydrotested, and 'U' stamped regardless of the fact it never officially went into service?
R Stamp Requirements

R Stamp Certification Requirements

The ‘R’ stamp is issued by The National Board of Boiler and Pressure Vessel Inspectors for the alterations or repairs of steam boilers. Kcncrew pack 05 15 19 20. This certification helps ensure that such alterations or repairs are only done by capable fabricators who can meet the requirements of the code. In the USA, anyone providing the aforementioned services is required by law to be authorized by the National Board. Additionally, the R-stamp certification is required for companies performing any repair activity on an ASME-certified steam boiler, pressure vessel, and related piping.

R Stamp Application

Procedure to Get the ‘R-Stamp’ From the National Board

The following steps can be employed when looking to get accreditation by the National Board:

  • Ensure that you and your employees are prepared to be audited. All systems and processes should be in place when applying for accreditation.
  • Contact the National Board for an application form or visit
  • Fill up the form and submit it along with the requisite fees. Process completion from the National Board’s end should take anywhere between 8 to 12 weeks. After which an official survey will be conducted.
  • In the meantime, you can familiarize yourself and your employees on the applicable code sections of ASME and National Board. You can read about the guidelines in a copy of the National Board Inspection Code (NBIC). Make sure to thoroughly read related ASME handbook and codes as well.
  • Visit and look at the list of authorized inspection agencies. Get into a contract with one of these agencies before the survey takes place.
  • Prepare a Quality Control (QC) program in accordance with the codes mentioned in Point 4. In this program, you need to outline standardized processes, as well as identifying employees and subcontractors who can help in accomplishing tasks.
  • Your QC program needs to be verified and approved by an authorized inspection agency.
  • This QC plan will then be verified by Representative of the National Board of Boiler and Pressure Vessel Inspectors. At this time, your authorized inspector and a supervisor from the Authorized Inspection Agency with which you have worked earlier on will need to be present.
  • Upon inspection, this team will either pass or fail your QC program.

Stamp Requirements For Mail

You can apply for forms or get more information from the official National Board website:
Alternatively, you can contact them at:
The National Board of Boiler and Pressure Vessel Inspectors,
1055 Crupper Avenue,
Columbus, Ohio
Phone: 614-888-8320