Class 4 (4th Engineer) SSEP 📅 May 2023

Exam Question

(a) Describe with the aid of a sketch the release arrangement for a machinery space fixed fire-fighting installation using CO2 system. State in your answer any special need for rapid delivery of the gas and the time permitted for discharge. (10)

(b) Explain why and how evacuation of the machinery space is considered necessary before releasing CO2 (10)

Reference Answer

### Part (a): CO2 Release Arrangement, Delivery Needs, and Discharge Time
#### **1. Release Arrangement for Machinery Space**
The release arrangement for a fixed CO2 fire-fighting system is designed for a deliberate, sequential, and safe operation from a protected location outside the machinery space. The system components are typically located in a dedicated, well-ventilated CO2 room.
**Components and Sequence of Operation:**

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