Laws and rules pertaining to boilers, water heaters, and unfired pressure vessels can be found in the following:

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 filed proposed changes to the boiler rules governing boilers and pressure vessels. The change affect safety codes, installer and clearance requirements, and fee for boilers and pressure vessels.  The CR-102 proposal was filed with the state's Office of the Code Reviser on Jan. 2.

L&I filed a CR-102 Continuance in order to extend the public comment period and allow for more opportunity for public comment. 

If adopted the new rules would take effect July 5, 2024.

How to participate

A public hearing on the proposed rules is scheduled for May 22, at 10:20 a.m.  The public hearing will be a "hybrid" event, that is, people can attend in person, by telephone, or Zoom.  The hearing will continue until all oral comments are received.

The public hearing will take place at the L&I Headquarters Building, 7273 Linderson Way SW Tumwater.

You can also join by either: 

Zoom

Click here to join the meeting:

https://lni-wa-gov.zoom.us/j/86866173024?pwd=ZnhCejZrSlIxRG9CRTZDYnZnSVpBZz09 

Passcode: X*y7x8Z*

Telephone:

1-252-215-8782

Meeting ID: 868 6617 3024

Passcode: 79245079

You can provide testimony or written comments at the hearing, or send written comments by 5 p.m. on May 15, 2024, to:

  • Meagan Edwards
  • Email: Meagon.Edwards@Lni.wa.gov  
  • Mail: Department of Labor & Industries, Field Services & Public Safety Division,                 PO Box 44400, Olympia, WA 98504-4400

If you require communication or accommodation arrangements, please contact Meagan Edwards at 360-522-0125, by May 15.

Rulemaking Documents

Rulemaking Proposals

CR-101 Preproposal

Proposed Rule Language (12/19/2023)

Here's what happens next:

  • May 22, 2024: A second public hearing on the proposed rules is scheduled for 10:20 a.m.
  • June 4, 2024: The final rules (CR-103) are expected to be filed with the state's Office of the Code Reviser.
  • July 5, 2024: The new rules are expected to take effect.

All Boiler Program Rulemaking