Staying Current: Understanding "Patched" ASME Standards and Repairs
An carries an official repair nameplate and an R-Stamp (for pressure vessels) or NR-Stamp (for nuclear). The repair organization must be an ASME-certified repair shop. Without this stamp, the patch is considered a "non-code repair," which voids the original ASME nameplate and may violate jurisdictional law (e.g., in most U.S. states, Canada, and EU countries). asme standard patched
. This code provides technical details for both permanent and temporary repairs to restore piping and vessels to a safe, code-compliant condition. Flush Patches (Insert Plates) states, Canada, and EU countries)
The standard categorizes patches based on how they are attached and whether they are meant to be temporary or permanent: PCC-2 - Repair of Pressure Equipment and Piping - ASME consult ASME PCC-2 – 2023 Edition
(for National Board inspection) or similar ASME-recognized tracking form. Common Use Cases Corrosion Mitigation:
For further reading, consult ASME PCC-2 – 2023 Edition, Article 2.2, and ASME BPVC Section VIII, Division 1, Appendix 24 (for external pressure patches).