14A.2.2 Structural fire protection

  14A.2.2.1

• a) Machinery spaces of category 'A', are to be enclosed by 'A-30' Class divisions.

• b) For Short Range Yachts, machinery spaces of category 'A', are to be be enclosed by 'B-15' Class divisions.

  14A.2.2.2 Openings in 'A' and 'B' Class divisions are to be provided with permanently attached means of closing that are to be at least as effective for resisting fires as the divisions in which they are fitted. Generally, windows should not be fitted in machinery space boundaries.

  14A.2.2.3 Where 'A' Class divisions are penetrated for the passage of electric cables, pipes, trunks, ducts, etc., or for girders, beams or other structural members, arrangements are to be made to ensure that the fire resistance is not impaired.

  14A.2.2.4 Where 'B' Class divisions are penetrated for the passage of electric cables, pipes, trunks, ducts, etc., or for the fitting of ventilation terminals, lighting fixtures and similar devices, arrangements are to be made to ensure that the fire resistance is not impaired.

  14A.2.2.5 Where the structure or 'A' Class divisions are required to be insulated, it is to be ensured that the heat from a fire is not transmitted through the intersections and terminal points of the divisions or penetrations to uninsulated boundaries. Where the insulation installed does not achieve this, arrangements are to be made to prevent this heat transmission by insulating the horizontal and vertical boundaries or penetrations for a distance of 450mm (this may be reduced to 380mm on steel divisions only).