Installation or reinstallation permits are required before any new or existing regulated boiler/unfired pressure vessel is installed, reinstalled, or moved in the state of Washington. L&I regulates low- and high-pressure steam boilers, building heating boilers, pool heaters, and water heaters for large publicly accessible pools, spas, and hot tubs.

The installer will need to complete a copy of the permit for each boiler or pressure vessel in your facility. Fill out Section A only on the Boiler/Pressure Vessel/Water Heater Installation or Reinstallation Permit form.

Once the form is complete, save it to your computer in its original format (Microsoft Word) and email it to L&I will review the permit form to ensure all information in the required fields has been completed. Boiler program staff will review the permit form within 24 hours after L&I receives the information.

L&I will then:

  • Send it back if it contains errors that must be corrected, OR
  • Assign the permit a number.

L&I will email, fax, or mail a copy of the permit to the boiler owner/originator of the permit.

After L&I receives your permit application, they will assign an inspector, and send you the approved permit with your inspector’s name and number.

You must contact the inspector when you’re ready for inspection and post a copy of the permit on or very close to the boiler/pressure vessel.

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