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.5 Fixed pressure water-spraying fire-extinguishing systems in machinery spaces (R 10)

Directive 2009/45/EC of the European Parliament and of the Council of 6 May 2009 on safety rules and standards for passenger ships (Recast) (Text with EEA relevance ) · European Union

Any required fixed-pressure water-spraying fire-extinguishing system in machinery spaces shall be provided with spraying nozzles of an approved type. The number and arrangement of the nozzles shall be such as to ensure an effective average distribution of water of at least 5 litres/m^(2) per minute in the spaces to be protected. Increased application rates may be considered if necessary for particular hazardous areas. Nozzles shall be fitted above bilges, tank tops and other areas over which oil fuel is liable to spread and also above other specific fire hazards in the machinery spaces. The system may be divided into sections, the distribution valves of which shall be operated from easily accessible positions outside the spaces to be protected and will not be readily cut off by a fire in the protected space. The system shall be kept charged at the necessary pressure and the pump supplying the water for the system shall be put automatically into action by a pressure drop in the system. The pump shall be capable of simultaneously supplying at the necessary pressure all sections of the system in any one compartment to be protected. The pump and its controls shall be installed outside the space or spaces to be protected. It shall not be possible for a fire in the space or spaces protected by the water-spraying system to put the system out of action. Precautions shall be taken to prevent the nozzles from becoming clogged by impurities in the water or corrosion of piping, nozzles, valves and pump. The pump may be driven by an independent internal combustion machinery but, if it is dependent upon power being supplied from the emergency generator fitted in compliance with the provisions of Part D of Chapter II-1, that generator shall be so arranged as to start automatically in the event of main power failure so that power for the pump required by paragraph .5 is immediately available. When the pump is driven by independent internal combustion machinery it shall be so situated that a fire in the protected space will not affect the air supply to the machinery. Fixed-pressure water-spraying fire-extinguishing systems in machinery spaces shall comply with the provisions of the Fire Safety Systems Code.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-10 · Text as adopted (Official Journal); later amendments are not incorporated in this text.