Licensing Exams by Trade Name - Home Link


Stationary Engineer Grade 3

Apply for the License
Maryland Board of Stationary Engineers
1100 North Eutaw Street
Baltimore, MD  21201
Phone: (410) 230-6162
Exam Provider
PSI Licensure: Certification
3210 E. Tropicana
Las Vegas, NV  89121
Phone:  (800) 733-9267
Exam Type
Exam Content
Subject Areas# of
General Knowledge & Problem Solving10
Basic Electricity5
Boiler Types & Equipment10
Burners & Fuel Train10
Pumps & Valves10
Sequential Operations10
Inspections & Maintenance5
Central Station & Chillers5
Water Treatment5
Emergency Operations5
Auxiliary Equipment5
Total number of test questions:
Time allowed (minutes):
Books NOT Allowed
Boiler Operator's Guide, 4th or 5th Edition, Anthony L Kohan
Buy at Amazon
Pump Handbook, 4th Edition, Karassik, Messina, Cooper, & Heald
Buy at Amazon
Modern Refrigeration and Air Conditioning, 19th or 20th Edition, Althous, Turnquist, Bowditch, Bracciano
Buy at Amazon
Lessons in Electric Circuits Volume 1 – DC (Chapters 1, 2, 3, 5, and 8), 5th Edition, 2021, Kuphaldt, Tony
PDF File Link
Lessons in Electric Circuits Volume 2 – AC (Chapter 1), 6th Edition, 2007, Kuphaldt, Tony – DC (Chapters 1, 2, 3, 5, and 8), 5th Edition, Kuphaldt, Tony
PDF File Link
Boiler & Pressure Vessel Safety Act, Title 12, Subtitle 9 Annotated Code of Maryland
Web Page Link
Business Occupations & Professions, Annotated Code of Maryland, Title 6.5 Annotated Code of Maryland
Web Page Link
Maryland Regulations ("COMAR"), Title 09, Subtitle 17
Web Page Link

NOTE:  The PSI bulletin shows the same code reference twice (reference #6).  Links for both code sections go to the same location.

A practice exam is currently NOT AVAILABLE

This page is being provided for research and links to books sources only.  We do not have an expected date for availability.  This page may have changed since your last visit.  Please refresh to see current info (F5 on your keyboard).

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