Exam Question
(a) Name the different classes of fire, with examples. Name the appropriate extinguishing agents in each case. (10)
(b) Explain the term explosion? (5)
(c) What is BLEVE, expand same and explain it's mechanism. (5)
Class 4 (4th Engineer)
SSEP
📅 Jul 2023
Reference Answer
### (a) Classes of Fire and Extinguishing Agents
Based on international standards (e.g., EN 2, NFPA 10), fires are classified according to the type of fuel involved. The appropriate extinguishing agent is selected based on its effectiveness against that fuel and the mechanism by which it extinguishes the fire (Cooling, Smothering, Starving, or Inhibiting Chemical Reaction).
| Class | Description & Fuel Type | Examples | Primary Extinguishing Agent(s) | Mechanism of Extinction |
| :--- | :--- | :--- | :--- | :--- |
Based on international standards (e.g., EN 2, NFPA 10), fires are classified according to the type of fuel involved. The appropriate extinguishing agent is selected based on its effectiveness against that fuel and the mechanism by which it extinguishes the fire (Cooling, Smothering, Starving, or Inhibiting Chemical Reaction).
| Class | Description & Fuel Type | Examples | Primary Extinguishing Agent(s) | Mechanism of Extinction |
| :--- | :--- | :--- | :--- | :--- |
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