Skilled Trades · Boiler Operator
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Who needs the card, and why nothing gets vented
Skilled Trades · Refrigerant Certifications (EPA 608, 609 & R-410A)
A one-hour EPA 608 radio show with Maya and Ben: music, Your Call quizzes and Myth or Fact across certification and the venting ban, recovery, small appliances, leak repair, and low-pressure chillers.
Technology · Anthropic Claude Certifications
Work through clear prompts, careful checks, and everyday Claude decisions with Maya and Ben.
Think like the person in charge
Food Service & Safety · ServSafe Certifications
Practice food safety through kitchen scenarios, quick decisions, and manager check-ins with Maya and Ben.
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.
Recorded with AI-generated hosts; voices built with Fish Audio. Independent study material from Open Exam Prep.
Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.
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Yes. Minnesota Boiler Operator Exam Prep Radio is free to listen to, with no sign-up. Press the power button and you join the broadcast straight away.
It is a 58-minute recorded study show that broadcasts continuously. Everyone tuned in hears the same moment, like real radio. Turn it off whenever you like; turning it back on joins the current broadcast.
It works like a study podcast that is always on. Instead of choosing an episode, you join the show in progress, and everyone on a station hears the same moment. There is no seek bar, speed control or download.
Maya & Ben are AI-generated hosts. The show is independent study material from OpenExamPrep; check exam rules with the official exam sponsor and practice with our free questions.
Yes. Open practice questions, study guides or flashcards on any page. The radio keeps playing, and the header has a power button to turn it off or back on.
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).
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.
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