Licensing Exams by Trade Name

Washington DC
(314) Second Class Stationary Boilers

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District of Columbia
Board of Industrial Trades
1100 4th St SW
Washington, DC  20024
Phone:  (202) 442-4400
Licensing Agency Site
Exam Provider
PSI Services LLC
DCRA Stationary Engineer Licensing
3210 E. Tropicana
Las Vegas, NV 89121
Phone:  (800) 733-2929
PSI DC Stationary Engineer Licensing Site
Exam Type
CLOSED  BOOK
Exam Content
Content Areas% of
Questions
Turbines, Design Auxiliaries & Operations15
Boiler Operations, Maintenance & Safety9
Waste to Energy Plants & Environmental / Pollution Control7
Water Treatment8
Boiler Combustion & Fuels7
Boiler Accessories & Auxiliary Equipment8
Engineering Calculations7
Electrical8
Controls   Pneumatic & Electronic7
Pumps, Feed, Hydronic & Condensate Systems8
Refrigeration, Air Conditioning & Cooling Towers8
Boiler Design & Principles8
Total number of test questions:
80
Time allowed (hours):
3.0
Books Allowed in the Exam
1.
Boiler Operator's Workbook, 4th Edition, R. Dean Williams
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2.
Stationary Engineering, 4th Edition, 2008, Steingress & Frost
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3.
High Pressure Boilers, 5th Edition, 2012, Steingress & Frost
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4.
Steam Plant Operation, 10th Edition, 2016, Woodruff & Lammers
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5.
Boiler Operator's Guide, 4th Edition, 1997, Anthony Kohan
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6.
Refrigeration & Air Conditioning Technology, 7th Edition, Delmar Publishing
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7.
Low Pressure Boilers, 5th Edition, 2018, Steingress
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8.
Ugly's Electrical References, 2014, George Hart
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9.
Electric Motor Control for Integrated Systems, 4th Edition, Gary J. Rockis, Glen A. Mazur
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10.
HVAC Control Systems, 3rd Edition,Ronnie J. Auvil
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With the exception of Ugly's Electrical References, any edition of the above books are acceptable

A practice exam is currently NOT AVAILABLE

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May-2025