Minnesota Boiler Operator Vocabulary Game
Exam terms with clues and explanations by OpenExamPrep.
About the Minnesota Boiler Operator Vocabulary Game
A free word game for the Minnesota Boiler Operator exam. Each round shows a clue for one of 40 exam terms across 5 topics. Recall the term, spell it out, then read a short explanation. Rounds pick a random term, so you can keep playing as long as you like.
How to Play
- 1Read the clue and type a term with the right number of letters (3 to 6). Abbreviations count: type the letters only.
- 2Press Check Answer or Enter. Each letter changes color to show how close you are.
- 3You have 6 tries. Stuck? Need a hint? asks the AI tutor for a nudge without giving the term away.
- 4After the round, read the explanation, ask the AI to explain it, share your result, or press Next.
- ARight letter, right spot
- AIn the term, wrong spot
- ANot in the term
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Topics in the Minnesota Boiler Operator Vocabulary Game
Licensing and inspections
Boilers and steam
Valves and safety
Water and blowdown
Combustion and draft
Sources for these terms (24)
- Licensing - boiler engineer — Minnesota Department of Labor and Industry · Source checked 2026-11-01
- State of Minnesota Department of Labor and Industry, CCLD: License Classifications (Boiler) · Source checked 2026-11-01
- Your guide to safer boiler operation — Minnesota Department of Labor and Industry · Source checked 2026-11-01
- Engineer tasks associated with boiler operation — Minnesota Department of Labor and Industry · Source checked 2026-11-01
- Special boiler license study material — Minnesota Department of Labor and Industry · Source checked 2026-11-01
- Minnesota Statutes § 326B.95 — Definitions (Boilers and Pressure Vessels) · Source checked 2026-11-01
- Minnesota Statutes § 326B.956 — Historical Boilers · Source checked 2026-11-01
- Minnesota Statutes § 326B.958 — Inspection and Registration · Source checked 2026-11-01
- Minnesota Statutes § 326B.96 — Inspection (Qualifying Boiler) · Source checked 2026-11-01
- Minnesota Statutes § 326B.964 — Standards of Inspection · Source checked 2026-11-01
- Minnesota Statutes § 326B.966 — Inspection Procedures and Standards of Repairs · Source checked 2026-11-01
- Minnesota Statutes § 326B.972 — License Requirement · Source checked 2026-11-01
- Minnesota Statutes § 326B.978 — Examinations; Classifications; Qualifications · Source checked 2026-11-01
- Minnesota Statutes § 326B.998 — Penalty for Operators · Source checked 2026-11-01
- Minnesota Administrative Rules Chapter 5225 — Boilers and Boats · Source checked 2026-11-01
- Improving Steam System Performance: A Sourcebook for Industry, Second Edition (DOE/GO-102012-3423) · Source checked 2026-11-01
- DOE Steam Tip Sheet #1: Inspect and Repair Steam Traps (DOE/GO-102012-3401) · Source checked 2026-11-01
- DOE Steam Tip Sheet #3: Use Feedwater Economizers for Waste Heat Recovery (DOE/GO-102012-3412) · Source checked 2026-11-01
- DOE Steam Tip Sheet #4: Improve Your Boiler's Combustion Efficiency (DOE/GO-102012-3402) · Source checked 2026-11-01
- DOE Steam Tip Sheet #8: Return Condensate to the Boiler (DOE/GO-102012-3410) · Source checked 2026-11-01
- DOE Steam Tip Sheet #9: Minimize Boiler Blowdown (DOE/GO-102012-3405) · Source checked 2026-11-01
- DOE Steam Tip Sheet #10: Recover Heat from Boiler Blowdown (DOE/GO-102012-3408) · Source checked 2026-11-01
- DOE Steam Tip Sheet #16: Minimize Boiler Short Cycling Losses (DOE/GO-102012-3407) · Source checked 2026-11-01
- DOE Steam Tip Sheet #18: Deaerators in Industrial Steam Systems (DOE/GO-102012-3399) · Source checked 2026-11-01
About the MN Boiler Operator Exam
Minnesota's boiler engineer exams are administered by the Department of Labor and Industry (DLI). Minnesota law divides engineers into four classes: Chief, First Class and Second Class (each in Grade A, B or C) and Special. Grade C covers low-pressure boilers, Grade B all boilers, and Grade A adds steam engines and turbines. Special needs only an application; higher classes need a notarized affidavit of operating experience. Every exam has a $50 application and exam fee, a 2.5-hour time limit and a 70% passing score.
Exam sponsor: Minnesota Dept of Labor and Industry. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.
Assessment
Question count varies by exam level
Time Limit
2.5 hours
Passing Score
70%
Reported exam pass rate: N/A. Exam sponsor website
Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.
Official sources
- Minnesota DLI: Licensing - boiler engineer (exam fee, 2.5-hour time limit, renewal) · Source checked 2026-10-23
- Minnesota DLI: Boiler License Classifications (experience, horsepower, questions per exam, passing grade) · Source checked 2026-10-23
- Minnesota DLI: Boiler Engineer Personal License Examination Application and affidavit · Source checked 2026-10-23
- Minnesota Statutes 326B.978: engineer classes, grades and horsepower limits · Source checked 2026-10-23
- Minnesota Statutes 326B.093: scheduling, retest wait and license fee after examination · Source checked 2026-10-23
- Minnesota Rules chapter 5225: experience, affidavits, 70% passing score, boiler safety rules · Source checked 2026-10-23
Frequently Asked Questions
Is the MN Boiler Engineer vocabulary game free?
Yes. The game is free to play with no sign-up. Signing in adds AI explanations for any term.
How does the MN Boiler Engineer vocabulary game work?
Each round shows a clue for one of 40 MN Boiler Engineer terms. Guess the term in six tries: green means the right letter in the right spot, yellow means the letter is in the term but in another spot, and gray means it is not in the term. After the round, read the explanation and play the next term.
Where do the MN Boiler Engineer terms come from?
OpenExamPrep researched each term from the Minnesota Dept of Labor and Industry content outline and primary sources, listed under Sources on this page. The game is independent study material, not an official exam resource.
How much does the Minnesota boiler engineer exam cost?
The Minnesota boiler engineer exam has a $50 application fee that includes the exam, for every license from Special through Chief. You pay it with your application, and it is not refundable. After you pass, you pay a separate two-year license fee (for example, $20 for Special, $40 for First and Second Class, and $80 for Chief).
What are the Minnesota boiler engineer license classes and grades?
Minnesota law divides boiler engineers into four classes: Special, Second Class, First Class and Chief. Second, First and Chief each come in Grade C (low-pressure boilers), Grade B (all boilers) and Grade A (boilers plus steam engines and turbines). The class sets the horsepower you may take charge of: Special 50, Second 100, First 500 and Chief unlimited. Each license has its own written exam.