Study Guide
16 topics covering everything you need to know for the exam.
Boiler Fundamentals
Core concepts of steam generation, boiler types, and basic operating principles.
Boiler Types & Construction
Firetube vs watertube boilers, construction methods, and common configurations.
Fittings & Mountings
Essential boiler fittings including gauge glass, try cocks, pressure gauges, and water column.
Safety Valves
The last line of defense against overpressure. Types, operation, testing, and ASME requirements.
Low Water Cutoff (LWCO)
Critical safety device that shuts off fuel when water drops below a safe level.
Feedwater Systems
Water supply to the boiler including pumps, injectors, treatment, and deaerators.
Water Treatment
Boiler water chemistry including scale, corrosion, blowdown, and chemical treatment.
Combustion & Burners
Fuel combustion principles, burner types, air/fuel ratio, and flame safeguards.
Draft & Ventilation
How combustion gases flow through the boiler. Natural, forced, and induced draft systems.
Daily Checks & Procedures
Required daily operator tasks: water level, blowdown, LWCO test, log entries.
Periodic Maintenance
Weekly, monthly, and annual maintenance tasks. Tube cleaning, valve testing, inspections.
Startup & Shutdown
Safe boiler startup sequence, normal shutdown, and emergency shutdown procedures.
Emergency Situations
How to respond to low water, overpressure, flame failure, and other emergencies.
Steam Systems
Steam distribution, traps, condensate return, superheaters, and economizers.
Minnesota Operating Rules
MN Rules Chapter 5225: licensing, attendance requirements, logbooks, and chief engineer duties.
Boiler Inspections
Internal and external inspections, preparation requirements, and what inspectors look for.