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Class 4 (4th Engineer) MEKM 📅 Aug 2022

Exam Question

If an auxiliary generator over speeds and runs away while off load, explain:

(a) How it can be stopped (6)

(b) What is likely to be the reason for the failure (4)

(c) Give details of what checks are made after the engine has been stopped, both regards to

(i) Mechanical checks and

(ii) Electrical checks (6)

Reference Answer

### (a) Procedure for Stopping an Overspeeding Auxiliary Generator (6 Marks)
An overspeeding auxiliary engine is a critical emergency. The primary objective is to cut the fuel supply immediately. The following methods, in order of preference and safety, should be employed:
1. **Remote Fuel Shut-off (Safest Method):**
* Activate the quick-closing valve for the specific auxiliary engine's fuel oil supply line.

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