About the Boiler Program

Installation or reinstallation permits are required before any new or existing boiler or unfired pressure vessel is installed, reinstalled, or moved in the state of Washington. L&I staff perform the inspections and investigations and issue permits and operating certificates.

After Floods & Other Natural Disasters: Information to assist in the recovery of boiler systems affected by flooding to help mitigate further risks to public safety and property damage.

What we do:

  • Perform safety inspections and issue operating permits for more than 111,000 boilers and unfired pressure vessels throughout the state.
  • Administer National Board and State examinations.
  • Investigate accidents involving boilers or pressure vessels.
  • Inspect, audit and review manufacturers of boilers and pressure vessels for conformance with national construction standards.

Why we do it:

  • To ensure public safety by performing annual or biennial inspections.
  • To ensure proper manufacturing — We ensure that boilers and pressure vessels are manufactured to approved codes and standards.
  • To help owners, manufacturers and repair firms understand the codes, rules and regulations.

If you have any questions, please contact the Boiler Section.

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