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Welcome to the steam and power forum's jurisdictional section. Purpose is to be able to readily lookup jurisdictional stationary engineers requirements in Canada and the the Canadain Providences as well as the United States of America and the States and Cities. If corrections are needed please Email Us.
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Washington Operating Engineers License

Washington Dept of Labor & Industries
Specialty Compliance Services Division
PO BOX 44410
Olympia, WA 98504-4410

No State Jurisdictional Boiler & Refrigeration Operator's License Law at this time.

Depending on Boiler Controls, an operator may be required to be in attendance during boiler operation.


City of Seattle Municipal Code 6.420 addresses licensing. Here are the exemptions to the city code 6.420: Exemptions from license requirements.
A steam engineer's or boiler fireman's license is not required of any person in charge of, or operating, the following:

  1. Any boiler or steam engine subject to federal regulations;
  2. Any boiler not subject to reinspection by the Seattle Boiler Code;
  3. Low-pressure hot water, low-pressure steam and hot-water supply boiler plants having inputs of less than 2,500,000 BTU per hour;
  4. 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;
  5. Potable water heaters;
  6. 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;
  7. Non-regenerative gas turbines.

Applications and questions should be directed to:

Department of Planning and Development
700 5th Ave, ste 2000
P. O. Box 34019
Seattle, WA, 98124-4019

Local residency not required to apply for license. Licenses from another jurisdiction are acceptable for experience. Operator is required to be in attendance during boiler operation. Finally, licensees shall attend an approved refresher course every five years.

The City of Seattle has three-supervisor license levels:

  1. Supervisor Grade 1 Steam Engineer
  2. Supervisor Grade 2 Steam Engineer
  3. Supervisor Grade 3 Steam Engineer

Seattle has three-supervisor license levels:

  1. Operator Grade 1 Steam Engineer
  2. Operator Grade 2 Steam Engineer
  3. Operator Grade 3 Steam Engineer
  4. Operator Grade 4 Boiler Fireman
  5. Operator Grade 5 Boiler Entry Level Fireman
  6. Small Power Boiler Operator

A refrigeration operating engineer license limits you to working on systems in specific buildings that are owned or operated by your employer. You need a refrigeration operating engineer license if:

  1. You are a full-time employee in a building that manufactures, processes, or stores materials or products in cold storage
  2. You spend a significant portion of your time maintaining and operating a refrigeration or air conditioning unit.

Here are the classes of refrigeration operating engineer licenses in the City of Seattle:

  1. Class A: You are limited to operating equipment that uses freon-type refrigerant, including methyl chloride or sulfur dioxide.
  2. Class B: You are limited to operating equipment that uses ammonia, which may include carbon dioxide.
  3. Class C: You can operating with all types of equipment and refrigerants listed above

Seattle also employs licensing to refrigeration contractors too. Such as a journey refrigeration mechanic license allows you to install, repair, or alter refrigeration or air conditional equipment. Your license must be matched to the type of refrigerant you work with:

  1. Class A: You are limited to working with equipment that uses freon-type refrigerant, including methyl chloride or sulfur dioxide.
  2. Class B: You are limited to working with equipment that uses ammonia, which may include carbon dioxide.
  3. Class C: You can work with all types of equipment and refrigerants listed above


City of Spokane
Department of Building & Code Enforcement
808 West Spokane Falls Boulevar
Spokane, WA 99201-3343

Local residency is not required to apply for license.

Licenses from other jurisdictions are acceptable for experience but it's up to Boiler Examiner.

Operators are required to be in attendance at all times during boiler operation.

The City of Spokane has 4 licensing levels:

  1. Spokane 1st Class Engineer
  2. Spokane 2nd Class Engineer
  3. Spokane 3rd Class Engineer
  4. Spokane Fireman


Tacoma City Hall
Second Floor, Room 408
747 Market Street
Tacoma, WA 98402-3769

City of Tacoma has abandon licensing since 2000.

Industrial Training School

Stationary High-Pressure Steam Engineer is an operating engineer that is licensed though competency by examinations for grades third through chief.  In the USA alone there are 100s of thousands of high pressure boilers alone in manufacturing or district heating, institutions, medical centers, public sector and with the vast majority in the private sector.

Chief Engineer of a stationary high-pressure steam plant has a leadership position and needs to command the steam plant operation economically and safety.

A 3rd Class Engineer in a stationary high-pressure steam engineer is a watch engineer.  This is also an entry level into Stationary High-Pressure Steam Engineering licensing too.  To be a candidate for a  3rd class is possible by going through an accredited learning program at a School or College or transition from LP Boiler Operator's license.  A more traditional path to 3rd Class stationary high-pressure engineers license is by experience.


Gas Turbine Operating Engineers are in demand for gas fired peaking power plants.  Gas turbines or combustion turbines as they are also called as well as simple cycle.

These gas turbines can be brought on-line producing 100s of MW in minutes when a wind-farm looses its wind or a cloud shades a photovoltic region.  So, this is especially important with more and more usage of photovoltic and wind power generators that cannot power a manufacturing base of a country or a large population since they are dependent on weather and more importantly solar activities.  Therefore, being a gas turbine 3rd Class, 2nd Class or 1st Class Gas Turbine Engineer is important to off-set the loss of base load fossil fuel power stations to meet the demand of the electric power grids.

Gas turbines come is three difference or basic catagories:  Large frame combustion turbines, large aero-derivative gas turbines, and micro-turbines.  Areo-derivative gas turbines are uses as a rule for peaking power stations.


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