Boiler laws, rules & policies

The Washington Administrative Code (WAC) Chapter 296-104 and Revised Code of Washington (RCW) Chapter 70.79 cover boilers and pressure vessels. The laws and are maintained and updated by the State Office of the Code Reviser (

If you receive an error message when referencing a link to a specific section of a WAC or RCW, search the Washington State Legislature (

Rule development

2018 rule changes

The Board of Boiler Rules and Washington State Department of Labor & Industries is considering changes to the boiler rules to adopt new safety code requirements, update and clarify existing rules, and increase fees by the fiscal growth factor rate of 4 percent. The changes would affect "Washington Administrative Code 296-104, "Board of Boiler Rules Substantive" (

The following are documents on rulemaking:

What happens next?

  • July 5, 2018: Pre-proposal (CR-101) filed with the state Code Reviser's Office.
  • September: Expected filing of proposed rules (CR-102) with the Code Reviser's Office.
  • November 2018: Public hearing on the proposed rules.
  • November 2018: Expected filing of final rules (CR-103) with the Code Reviser's Office.
  • Jan. 1, 2019: Expected effective date of the rules.

End of main content, page footer follows.

Access Washington official state portal

  © Washington State Dept. of Labor & Industries. Use of this site is subject to the laws of the state of Washington.

Help us improve