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.2 Carbon dioxide systems (R 5.2)

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

For cargo spaces the quantity of CO_(2) available shall, unless otherwise provided, be sufficient to give a minimum volume of free gas equal to 30 % of the gross volume of the largest cargo space so protected in the ship. If there is a connection through ventilation ducts between two or more cargo spaces, these shall be considered one space. In ships used for the carriage of vehicles, the necessary quantity of CO_(2) shall be calculated as 45 % of the gross cubic content of the largest cargo space. For machinery spaces the quantity of carbon dioxide carried shall be sufficient to give a minimum volume of free gas equal to the larger of the following volumes, either: 40 % of the gross volume of the largest machinery space so protected, the volume to exclude that part of the casing above the level at which the horizontal area of the casing is 40 % or less of the horizontal area of the space concerned taken midway between the tank top and the lowest part of the casing; or 35 % of the gross volume of the largest machinery space protected, including the casing; provided that if two or more machinery spaces are not entirely separated they shall be considered as forming one space. For the purpose of this paragraph the volume of free carbon dioxide shall be calculated at 0,56 m^(3)/kg. The fixed piping system shall be such that 85 % of the gas can be discharged into the space within 2 minutes. Release mechanism of carbon dioxide: Two separate controls shall be provided for releasing carbon dioxide into a protected space and to ensure the activities of the alarm. One control shall be used to discharge the gas from its storage containers. A second control shall be used for opening the valve of the piping which conveys the gas into the protected space. The two controls shall be located inside a release box clearly identified for the particular space. If the box containing the controls is to be locked, a key to the box shall be in a break-glass-type enclosure conspicuously located adjacent to the box. The Administration of the flag State shall ensure that the spaces in which the CO_(2) batteries are located will be properly arranged as regards their access, ventilation and communication equipment. It shall take the necessary safety measures regarding the construction, installation, marking, filling and testing of CO_(2) cylinders, pipes and fittings, and for the control and alarm equipment for such installation. Carbon dioxide systems shall comply with the provisions of the Fire Safety Systems Code. The Administration of the flag State shall ensure that the spaces in which the CO_(2) batteries are located will be properly arranged as regards their access, ventilation and communication equipment. It shall take the necessary safety measures regarding the construction, installation, marking, filling and testing of CO_(2), cylinders piping and fittings and for control and alarm equipment for such installation.

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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.