Minnesota Boiler License Practice Exam 2025 – All-in-One Guide to Passing with Confidence

A shift engineer in a high pressure, high temperature hot water plant with a capacity of 500 bhp must possess a 2nd class grade A or B license. This requirement arises from the regulatory standards established for operating steam or high-temperature hot water boiler plants.

The 2nd class license is designated for operators who are responsible for systems where the complexity and potential hazards necessitate a solid understanding of boiler operations, safety protocols, and maintenance. In this scenario involving high pressure and temperature operations, having a 2nd class grade A or B license ensures that the engineer has the requisite skills and knowledge to manage the operational demands and safety concerns associated with such a facility.

Licenses of a higher grade, such as a 1st class or chief engineer licenses, typically apply to more complex operations or larger capacity plants, which is why they are not required in this case. A special engineer's license is usually intended for specific equipment or limited operations, and thus, does not meet the qualifications needed for overseeing a high-pressure hot water plant like the one described.