What is one role of a first-class engineer?

A first-class engineer is primarily responsible for overseeing the maintenance and operation of high-pressure boilers. This role includes ensuring that boilers function correctly and safely, adhering to regulations, and implementing maintenance schedules to prevent failures. High-pressure boilers require specialized knowledge due to the increased risks associated with their operation, such as potential hazards from steam and pressure.

In this capacity, a first-class engineer is equipped not only to operate these systems but also to troubleshoot issues, manage any repairs, and supervise the work of lower-class engineers or operators. This level of responsibility is crucial to maintaining safety standards and operational efficiency in environments where high-pressure boilers are in use.

Other roles listed, such as conducting inspections or designing new systems, pertain to different responsibilities that may not be exclusive to a first-class engineer. Operating shifts in a low-pressure plant, while part of another engineer's duties, does not align with the higher level of responsibility assigned to a first-class engineer, particularly regarding high-pressure boilers.