Laws and rules pertaining to boilers, water heaters, and unfired pressure vessels can be found in the following:
- Washington Administrative Code (WAC) Chapter 296-104.
- Revised Code of Washington (RCW) Chapter 70.79.
The laws and rules are maintained and updated by the State Office of the Code Reviser.
Download our Boilers and Unfired Pressure Vessel Laws Book (updated August 2022).
Rule Development
2023 Rule Changes and Fee Increase
The Board of Boiler Rules and the Washington Department of Labor & Industries (L&I) has adopted changes to the boiler rules. The change affect safety codes, installer and clearance requirements, and fees for boilers and pressure vessels.
The updates are needed to ensure the rules are consistent with national standards and industry practice. A fee increase by the fiscal growth factor rate of 6.4% is needed to cover continuing operating expenses.
The agency filed a CR-103 Adoption Order on June 4, for changes under chapter 296-104 WAC. The rules and fee increase will take effect July 5.
Rulemaking Documents
Proposed Rule Language (12/19/2023)
- CR-102 Proposed Rulemaking
- CR-102 Proposed Rule Language
- Preliminary Cost Benefit Analysis
- Public Hearing Information Packet - February 21
- CR-102 Continuance Proposed Rulemaking
- CR-102 Continuance Proposed Rule Language
- Public Hearing Information Packet - May 22
Final Adoption (06/04/2024)