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About This Item


Full Description

It is the purpose of the National Board Inspection Code (NBIC) to maintain the integrity of pressure-retaining items by providing rules for post-construction activities including installation, and by providing rules for post-installation activities including inspections, repairs, and alterations, thereby ensuring the safety of the pressure-retaining items’ continued use.

The NBIC is intended to provide rules, information, and guidance to manufacturers, jurisdictions, Inspectors, owner-users, installers, contractors, and other individuals and organizations performing or involved in post-construction activities, thereby encouraging the uniform administration of rules pertaining to pressure retaining items.

The NBIC recognizes four important areas of post-construction activities where information, understanding, and following specific requirements will promote public and personal safety. These areas include:

  • Installation
  • Inspection
  • Repairs and Alterations
  • Testing of Pressure Relief Devices

The NBIC provides rules, information, and guidance for post-construction activities, but does not provide details for all conditions involving pressure-retaining items. Where complete details are not provided in this Code, the Code user is advised to seek guidance from the applicable jurisdiction or other technical sources.


Document History

  1. NBBI NB23-2023


    National Board Inspection Code - NBIC, 2023 Edition (Four Volumes)

    • Most Recent
  2. NBBI NB23-2021

    National Board Inspection Code - NBIC, 2021 Edition (Four Volumes)

    • Historical Version
  3. NBBI NB23-2019

    National Board Inspection Code - NBIC, 2019 Edition (Four Volumes)

    • Historical Version
  4. NBBI NB23-2017

    National Board Inspection Code - NBIC, 2017 Edition (Four Volumes)

    • Historical Version
  5. NBBI NB23-2015

    National Board Inspection Code - NBIC, 2015 Edition (Three Volumes)

    • Historical Version
  6. NBBI NB23-2013 SET

    National Board Inspection Code - NBIC, 2013 Edition (Three Volume Set)

    • Historical Version
  7. NBBI NB23-2011

    National Board Inspection Code - NBIC, 2011 Edition (Three Volumes)

    • Historical Version
  8. NBBI NB23-2007

    National Board Inspection Code - NBIC, 2007 Edition (Three Volumes)

    • Historical Version
  9. NBBI NB23-2004

    National Board Inspection Code - NBIC, 2004 Edition

    • Historical Version