The National Board Inspection Code 2021 Edition, Part 1: Installation is a technical reference for the installation, inspection, testing, and acceptance of boilers, pressure vessels, piping, pressure relief devices, and associated equipment. It includes requirements for power boilers, heating boilers, hot-water supply boilers, potable water heaters, pressure vessels, piping systems, and specialized installations such as thermal fluid heaters, biomass-fired boilers, liquid carbon dioxide storage vessels, and Yankee dryers.
This PDF edition is intended for inspectors, engineers, contractors, manufacturers, facility operators, jurisdictional authorities, and other professionals responsible for compliant pressure equipment installations.
Application Scope: Use this code as an installation and inspection reference for boilers, pressure vessels, piping, pressure relief systems, and related equipment covered by the National Board Inspection Code.
