Class 4 (4th Engineer) MEKG 📅 May 2024

Exam Question

(a) Whils't on 'seawatch' you observe that the Oil Mist detector (OMD) in the engine room has triggered an alarm; and in feeling the crankcase doors on the bottom platform, you find that the unit in question feels warmer than the rest. What pre-emptive action will you take as Watch-keeper to bring the situation under control (10)

(b) Draw a simple line diagram of a 'OMD' and explain it's working (6)

Reference Answer

### Part (a): Pre-emptive Action for OMD Alarm (10 Marks)
Upon observing an Oil Mist Detector (OMD) alarm and confirming a warmer crankcase door for a specific unit, the Watchkeeping Engineer must execute a series of systematic and pre-emptive actions prioritizing the safety of personnel, the vessel, and the machinery. The primary objective is to prevent a crankcase explosion.
**1. Immediate Actions & Communication:**
* **Acknowledge Alarm:** Immediately acknowledge the audible and visual OMD alarm on the Engine Control Room (ECR) panel.

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