Exam Question
(a) What are the different classes of subdivision of fire protection in ships? (8)
(b) What are the conditions to be met by different classes of subdivision? (8)
Class 4 (4th Engineer)
SC&S
📅 Feb 2023
Reference Answer
### (a) Different Classes of Subdivision for Fire Protection
As per SOLAS regulations, structural fire protection is achieved by subdividing the ship into main vertical and horizontal zones through thermal and structural boundaries. These boundaries, known as divisions, are classified based on their ability to resist fire and prevent the passage of smoke, flame, and heat. The three primary classes of fire divisions are:
1. **"A" Class Divisions:** These are the most robust fire divisions, used to form main vertical zones and horizontal zones, separating high-risk areas like machinery spaces, galleys, and control stations from accommodation and service spaces.
2. **"B" Class Divisions:** These divisions are used for subdividing the main vertical zones and horizontal zones, such as forming corridors, cabin separations, and lining bulkheads within accommodation and service spaces.
As per SOLAS regulations, structural fire protection is achieved by subdividing the ship into main vertical and horizontal zones through thermal and structural boundaries. These boundaries, known as divisions, are classified based on their ability to resist fire and prevent the passage of smoke, flame, and heat. The three primary classes of fire divisions are:
1. **"A" Class Divisions:** These are the most robust fire divisions, used to form main vertical zones and horizontal zones, separating high-risk areas like machinery spaces, galleys, and control stations from accommodation and service spaces.
2. **"B" Class Divisions:** These divisions are used for subdividing the main vertical zones and horizontal zones, such as forming corridors, cabin separations, and lining bulkheads within accommodation and service spaces.
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