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A chief class operating license is required to take charge of a boiler plant over what horsepower?

  1. 50 bhp

  2. 500 bhp

  3. 300 bhp

  4. 100 bhp

The correct answer is: 300 bhp

A chief class operating license is specifically designed for individuals who are tasked with overseeing larger and more complex boiler operations. In Minnesota, the requirement for a chief class operating license is set at the threshold of 300 boiler horsepower (bhp). This is significant because it aligns with safety standards and regulations, ensuring that only those with adequate training and understanding of the equipment and its operational requirements manage high-capacity boilers. Boiler horsepower is a measure of the boiler's capacity to produce steam and, as the horsepower increases, so does the complexity and potential risks associated with operation. Therefore, having a chief class operating license for anything over 300 bhp ensures that a qualified operator is responsible for maintaining safety protocols, efficiency, and regulatory compliance in the operation of these larger systems. This context is essential for understanding the responsibilities and requirements that come with such licensing.