This stamp governs repairs and alterations.īoth pressure vessels and fire vessels (like boilers) fall under the purview of the R-Stamp. The NBBI Certificate of Authorization (R-Stamp) comes from the National Board of Boiler and Pressure Vessel Inspectors. There are three different U-Stamps, each one related to Divisions 1-3 of the Code.
U-stamp ASME standards govern everything related to construction, design, and engineering of unfired pressure vessels including: The ASME Certification for Unfired Pressure Vessels (U-Stamp) comes from Section VIII Divisions 1-3 of the ASME Boiler and Pressure Vessel Code - a set of regulations and safety requirements accepted by over 100 countries. There are many but two common pressure vessel code stamps in the USA are an ASME code “U-Stamp” and the NBIC certification “R-Stamp.” The U-Stamp (ASME Pressure Vessel Code) What Are the Different Pressure Vessel Stamps? These pressure vessel codes ensure that vessels and boilers are safely built and that future engineers have a solid record of a vessel’s entire history, including fabrication and all the repairs and alterations made to the vessel. There are a variety of pressure vessel certification requirements that must be met when fabricating new vessels or when making repairs or alterations to existing vessels. strict standards are in place to ensure they are fabricated correctly. These can be found in most industrial and commercial environments.īecause these vessels operate at such extreme pressures, a poorly built pressure vessel is a massive workplace hazard. The most common types of pressure vessels are process vessels, heat exchangers, and storage vessels.
While vessels can be built to hold higher pressures, the certification requirements for these are increasingly stringent. Pressure vessels are robust storage containers that hold products under pressures ranging from 15 PSI all the way up to a whopping 3,000 PSI.
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