Searchable NB-18 is an always up to date web application for use in finding manufacturers, assemblers and device information and includes a listing of the following: Assembler and Manufacturer Certifications; Certified Device Types by Manufacturer; A listing of VR and T/O Certificate Holders can be found in the Manufacturer & Repair Directory

Download Full NB-18 PDF ***Note: With the publication of ASME Section XIII, the National Board revised NB-18 on January 2022 to refer to Designators instead of Code Sections. All Certifications that reference Code Sections remain valid for the equivalent Designators.

National Board of Boiler and Pressure Vessel Inspectors

2025年3月10日 · NB-18 provides for the certification of pressure relief device designs and the accreditation of organizations that manufacture or assemble these devices. Accredited organizations are issued a certificate of authorization to apply the National Board NB symbol to devices of certified designs.

2020年3月2日 · The National Board announces changes and updates to its free, online resource NB-18, Pressure Relief Device Certifications. Here’s what has changed: The format is no longer a single downloadable pdf document; it is now a live, searchable database with the ability to generate custom search queries based on your unique criteria.

2025年3月7日 · Searchable NB-18 is an always up to date web application for use in finding manufacturers, assemblers and device information and includes a listing of the following: Assembler and Manufacturer Certifications; Certified Device Types by Manufacturer; A listing of VR and T/O Certificate Holders can be found in the Manufacturer & Repair Directory

NB-18; Manufacturer and Repair Directory. General Information This directory contains a listing of: Manufacturers of boilers, pressure vessels, or other pressure-retaining items holding an active Certificate of Authorization to Register with the National Board; Active Manufacturers or Assemblers of pressure relief devices who have these items ...

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NB-18, Pressure Relief Device Certification Test Lab Data JRS Manufacturer & Repair Directory. BULLETIN. General Meeting. Resources. News and Events. View Archives. Spring 2025 BULLETIN. Our cover story delves into NBBI’s role as the only ASME Designated Organization, primarily focusing on the responsibilities of the Pressure Relief ...

NB-18 - Free ebook download as PDF File (.pdf), Text File (.txt) or read book online for free. This document provides information on various safety relief valve designs certified by the National Board.