Minnesota Boiler License Practice Exam

For a high pressure boiler plant of 31 to 200 bhp, the requirements state it:

1. Must be attended daily

2. Must be checked every 4 hours

3. Cannot be left unattended over consecutive 2 hours

4. May be left unattended for up to 1 hour

The correct answer is: Cannot be left unattended over consecutive 2 hours

For a high-pressure boiler plant operating between 31 to 200 boiler horsepower (bhp), the correct requirement is that the boiler cannot be left unattended for more than two consecutive hours. This regulation is in place to ensure safety, as high-pressure boilers can pose significant risks if not closely monitored. High-pressure systems require continual oversight due to the potential for hazards such as pressure build-up, water quality issues, and equipment failures. Regular inspections and prompt responses to any irregularities are essential to prevent accidents. The two-hour limit allows operators or the responsible person enough flexibility to handle operational demands while ensuring that appropriate safety guidelines are followed. In contrast, the other options suggest varying levels of supervision and monitoring that might not align with safety protocols outlined for high-pressure boiler operations. For instance, daily attendance may not be sufficient given the risks involved, while leaving a boiler unattended for up to one hour does not reflect the necessary vigilance required in this operational context. Checking every four hours does not meet the immediate monitoring needs as well. Thus, the two-hour limitation serves as a crucial standard to maintain safety in a high-pressure boiler environment.