Which situation does NOT warrant an exception for RMD activation?

The situation that does not warrant an exception for RMD (Reduced Manpower Deployment) activation is normal engineering procedures. In the context of emergency response and safety protocols, normal engineering procedures are routine operational activities that do not present an immediate risk to personnel or equipment. These procedures are conducted under controlled conditions, where the crew is trained to handle routine tasks efficiently and safely without the need to switch to a reduced manpower operation.

In contrast, situations like a crankcase explosion, a Class Charlie fire in the switchboard, and personnel entanglement are all emergency scenarios that require immediate and focused response actions. Each of these situations poses significant risks that necessitate the activation of RMD to ensure that the crew can effectively respond to the emergency, potentially involving fire suppression, personnel rescue, or damage control.

By following established protocols during emergencies, the crew maintains a heightened state of readiness, ensuring safety and effective management of the scenario at hand. Hence, normal engineering procedures do not create the same urgency or risk level that would require deviation from standard operational protocols.