What defines a propulsion plant casualty?

A propulsion plant casualty is defined as a situation that affects the safety of the propulsion or reactor equipment. This definition encompasses any incident or failure that can compromise the integrity, functionality, or operational safety of the propulsion system or associated reactor systems. Such casualties can lead to severe consequences, including risks to the crew, vessel, and mission, making it critical to address any issues promptly.

By focusing solely on safety implications, option B effectively captures the essence of what constitutes a casualty within the propulsion plant context. This recognition is crucial for ensuring that appropriate procedures and responses are implemented to mitigate any potential hazards arising from such incidents. Understanding this concept is essential for maintaining operational readiness and ensuring personnel safety aboard naval vessels.