Class 4 (4th Engineer) MEKM 📅 Dec 2025

Exam Question

With reference to the diesel prime movers for generators in unmanned machinery spaces:

(a) Outline the monitoring and control equipment designed to protect the engine. (8)

(b) Describe the methods employed to test the monitoring and control equipment, during a routine check. (8)

Reference Answer

### (a) Monitoring and Control Equipment for UMS Generator Prime Movers
For a diesel prime mover in an Unmanned Machinery Space (UMS) to operate safely without continuous manual supervision, a comprehensive suite of monitoring and control equipment is essential. This equipment is designed to provide early warnings (alarms), initiate protective load reduction (slowdown), and perform emergency stops (shutdowns) to prevent catastrophic failure. The primary systems protected are as follows:
1. **Lubricating Oil System:** Vital for reducing friction and removing heat from bearings and pistons.
* **Low L.O. Pressure:** A two-stage protection. An ALARM (e.g., at 2.5 bar) alerts the duty engineer. A SHUTDOWN (e.g., at 2.0 bar) is initiated to prevent immediate seizure of bearings and crankshaft.

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