Exemptions from license requirements
Seattle Mun. Code § 6.420.050
in effect6.420.050 - Exemptions from license requirements
A steam engineer's or boiler operator's license is not required of any person in charge of, or operating, the following:
A. Any boiler or steam engine subject to federal regulations;
B. Any boiler not subject to reinspection by the Seattle Boiler Code;
C. Low-pressure hot water, low-pressure steam and hot-water supply boiler plants having inputs of less than 2,500,000 BTU per hour;
D. Any boiler having an input of less than 100,000 BTU per hour and a maximum pressure of 100 pounds per square inch or less;
E. Potable water heaters;
F. Ancillary equipment that may be connected to the operation of a boiler or boiler system such as, but not limited to, pumps, filters, pre-heaters, heat exchangers, and related pressure vessels;
G. Non-regenerative gas turbines; or
H. Boiler equipment being installed by and under the control of the boiler manufacturer or the manufacturer's representative, a boiler installation contractor, or a boiler or burner installer making the installation under the manufacturer's written instructions and recommendations.
(Ord. 126359, § 1, 2021; Ord. 122115, § 2, 2006.)
Source: City of Seattle, Seattle Municipal Code and City Charter (Municode Library, library.municode.com)URL: https://library.municode.com/wa/seattle/codes/municipal_code?nodeId=TIT6BURE_SUBTITLE_IVNELICO_CH6.420STENBOOP_6.420.050EXLIREFetched: 11/1/2026