Chapter 5 – Fixed Gas Fire-Extinguishing Systems
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.339(91) – Adoption of Amendments to the International Code for Fire Safety Systems (FSS Code) – (Adopted on 30 November 2012)The Annex below is consolidated into International Code for Fire Safety Systems (FSS Code) - Annex – Amendments to the International Code for Fire Safety Systems (FSS Code)The Annex below is consolidated into International Code for Fire Safety Systems (FSS Code) - Chapter 5 – Fixed Gas Fire-Extinguishing Systems

Chapter 5 – Fixed Gas Fire-Extinguishing Systems

  2 In paragraph 2.1.1.1, after the second sentence, the following new sentence is added:

  • "Adjacent spaces with independent ventilation systems not separated by at least A-0 class divisions should be considered as the same space."

  3 In paragraph 2.1.1.3, after the first sentence, the following new sentence is added:

  • "It shall not be necessary to move the containers completely from their fixing position for this purpose. For carbon dioxide systems, hanging bars for a weighing device above each bottle row, or other means shall be provided. For other types of extinguishing media, suitable surface indicators may be used."

  4 In paragraph 2.1.3.2, the first sentence is replaced by the following:

  • "Means shall be provided for automatically giving audible and visual warning of the release of fire-extinguishing medium into any ro-ro spaces, container holds equipped with integral reefer containers, spaces accessible by doors or hatches, and other spaces in which personnel normally work or to which they have access."

  5 The following new paragraph 2.2.1.2 is added after the existing paragraph 2.2.1.1 and the subsequent paragraphs are renumbered accordingly, including references to those paragraphs:

  • "2.2.1.2 For vehicle spaces and ro-ro spaces which are not special category spaces, the quantity of carbon dioxide available shall be at least sufficient to give a minimum volume of free gas equal to 45% of the gross volume of the largest such cargo space which is capable of being sealed, and the arrangements shall be such as to ensure that at least two thirds of the gas required for the relevant space shall be introduced within 10 min. Carbon dioxide systems shall not be used for the protection of special category spaces."

  6 The following new paragraph 2.2.1.7 is added after the renumbered paragraph 2.2.1.6:

  • "2.2.1.7 For container and general cargo spaces (primarily intended to carry a variety of cargoes separately secured or packed) the fixed piping system shall be such that at least two thirds of the gas can be discharged into the space within 10 min. For solid bulk cargo spaces the fixed piping system shall be such that at least two thirds of the gas can be discharged into the space within 20 min. The system controls shall be arranged to allow one third, two thirds or the entire quantity of gas to be discharged based on the loading condition of the hold."

  7 In paragraph 2.2.2, the first sentence is replaced by the following:

  • "Carbon dioxide systems for the protection of ro-ro spaces, container holds equipped with integral reefer containers, spaces accessible by doors or hatches, and other spaces in which personnel normally work or to which they have access shall comply with the following requirements:"

  8 Section 2.4 is deleted.

  9 Section 2.5 is renumbered as "2.4" and the words "in paragraphs 2.2 to 2.4" are replaced with the words "in paragraphs 2.2 and 2.3".


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