Article 59 Ventilation systems

In every vessel of 12 metres in length and over to which these Rules apply adequate means shall be provided for stopping fans and closing main inlet and outlet openings of ventilation systems from a position outside the spaces served by the ventilation systems.

In every such vessel adequate means shall be provided for closing funnel ventilation openings.

Subject to paragraph (5) below, in every such vessel ventilation systems serving main machinery spaces shall not pass through accommodation spaces, service spaces or control stations.

Subject to paragraph (5) below, in every such vessel ventilation systems serving accommodation spaces, service spaces or control stations shall not pass through main machinery spaces.

In every such vessel the requirements of paragraphs (3) and (4) above shall not apply where suitable materials are used in the construction of the ventilation systems and proper means provided to preserve the integrity of the fire divisions.

In every such vessel ventilation openings shall not be fitted in doors and bulkheads which form part of stairway enclosures:

provided that such openings may be provided in cabin doors which form a fire division if they are situated in the lower portion of the door.

In every such vessel, where reasonably practicable, ventilation ducts serving stairway enclosures required to be ventilated shall not serve any other space.

In every such vessel exhaust ventilation systems from galleys shall be provided with a grease trap and those which pass through accommodation spaces, service spaces or control stations shall be constructed of steel insulated to A.30 standard.

In every such vessel ventilation systems serving propulsion, essential auxiliary machinery spaces and cargo refrigerating machinery spaces shall be independent of other systems and shall provide adequate ventilation.

In every such vessel adequate ventilation systems shall be provided to store-rooms containing flammable products, gas cylinders or other dangerous materials. Each system shall be self-contained and the inlet and outlet openings shall be positioned in safe areas and fitted with spark arresters.

In every such vessel suitable material shall be used in the construction of all ventilation systems.