Which personnel roles are mentioned as part of the safety regulation in power engineering?

The correct answer identifies personnel roles that are essential in the context of safety regulations within power engineering. The roles of Shift Engineer, Chief Engineer, and Fireman each contribute to maintaining safe operating conditions in power plants.

The Shift Engineer plays a crucial role in overseeing operations during their scheduled shift, ensuring that safety protocols are adhered to and that the equipment is functioning correctly. The Chief Engineer holds a higher level of responsibility, often tasked with implementing safety standards, conducting inspections, and overseeing all aspects of the plant's operations. The Fireman, although sometimes seen in a more traditional context, is vital in managing and controlling the boiler operations and ensuring that safety practices related to steam and pressure are upheld.

In contrast, the other choices highlight various roles that can be important in different contexts but may not all specifically emphasize the safety regulation aspect as directly as the roles in the correct answer. For instance, while a Maintenance Technician, Safety Officer, Operator, Plant Manager, Supervisor, and Technician are all integral to the operation and maintenance of power systems, their specific focus and responsibilities can vary considerably and may not align as closely with primary safety roles in the same way.