Exam Question
(a) What are the safety interlocks provided in compressed air starting system of main engine? (8)
(b) Describe with a diagram the air starting system of a main engine (8)
Class 4 (4th Engineer)
MEKM
📅 Mar 2023
Reference Answer
### (a) Safety Interlocks in a Main Engine Compressed Air Starting System (8 Marks)
Safety interlocks are critical systems designed to prevent engine operation under unsafe conditions, protecting both personnel and machinery from catastrophic failure. A comprehensive set of interlocks is fitted to the main engine starting system. The primary interlocks and their functions are as follows:
1. **Turning Gear Interlock:**
* **Purpose:** This is the most critical mechanical interlock. It physically prevents the admission of starting air to the engine while the turning gear is engaged with the flywheel.
Safety interlocks are critical systems designed to prevent engine operation under unsafe conditions, protecting both personnel and machinery from catastrophic failure. A comprehensive set of interlocks is fitted to the main engine starting system. The primary interlocks and their functions are as follows:
1. **Turning Gear Interlock:**
* **Purpose:** This is the most critical mechanical interlock. It physically prevents the admission of starting air to the engine while the turning gear is engaged with the flywheel.
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