SOLAS-2012

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Chapter II-2, Part C 2.3.3 Fire integrity of bulkheads and decks <strong>SOLAS</strong> 74/78 page 45/112 2.3.3.1 In addition to complying with the specific provisions for fire integrity of bulkheads and decks of cargo ships, the minimum fire integrity of bulkheads and decks shall be as prescribed in tables 9.5 and 9.6. 2.3.3.2 The following requirements shall govern application of the tables: .1 Tables 9.5 and 9.6 shall apply respectively to the bulkheads and decks separating adjacent spaces; .2 For determining the appropriate fire integrity standards to be applied to divisions between adjacent spaces, such spaces are classified according to their fire risk as shown in categories (1) to (11) below. Where the contents and use of a space are such that there is a doubt as to its classification for the purpose of this regulation, or where it is possible to assign two or more classifications to a space, it shall be treated as a space within the relevant category having the most stringent boundary requirements. Smaller, enclosed rooms within a space that have less than 30% communicating openings to that space are considered separate spaces. The fire integrity of the boundary bulkheads and decks of such smaller rooms shall be as prescribed in tables 9.5 and 9.6. The title of each category is intended to be typical rather than restrictive. The number in parentheses preceding each category refers to the applicable column or row in the tables; Table 9.5 - Fire integrity of bulkheads separating adjacent spaces Spaces (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) Control stations (1) A-0 e A-0 A-60 A-0 A-15 A-60 A-15 A-60 A-60 * A-60 Corridors (2) B-0 B-0 B-0 A-60 A-0 A-0 C A-0 c A-0 * A-30 Accommodation (3) Ca, b B-0 B-0 A-60 A-0 A-0 spaces A-0 c A-0 * A-30 Stairways (4) B-0 B-0 A-60 A-0 A-0 A-0 c A-0 c A-0 * A-30 Service spaces (5) A-60 A-0 A-0 A-0 C A-0 * (low risk) Machinery spaces (6) A-0 A-0 g * of category A A-60 * A-60 f Other machinery (7) A-0 d A-0 A-0 A-0 * spaces Cargo spaces (8) * A-0 * A-0 Service spaces (9) A-0 d A-30 * (high risk) Open decks (10) A-0 Ro-ro and (11) vehicle spaces * h
Chapter II-2, Part C <strong>SOLAS</strong> 74/78 Table 9.6 – Fire integrity of decks separating adjacent spaces page 46/112 Space Space Below above Control stations (1) Corridor (2) Accommodation (3) spaces Stairways (4) Service spaces (5) (low risk) Machinery spaces (6) of category A Other machinery (7) spaces Cargo spaces (8) Service spaces (9) (high risk) Open decks (10) Ro-ro and (11) vehicle spaces (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) A-0 A-0 A-0 A-0 A-0 A-60 A-0 A-0 A-0 * A-60 A-0 * * A-0 * A-60 A-0 A-0 A-0 * A-30 A-60 A-0 * A-0 * A-60 A-0 A-0 A-0 * A-30 A-0 A-0 A-0 * A-0 A-60 A-0 A-0 A-0 * A-30 A-15 A-0 A-0 A-0 * A-60 A-0 A-0 A-0 * A-0 A-60 A-60 A-60 A-60 A-60 * A-60 i A-30 A-60 * A-60 A-15 A-0 A-0 A-0 A-0 A-0 * A-0 A-0 * A-0 A-60 A-0 A-0 A-0 A-0 A-0 A-0 * A-0 * A-0 A-60 A-0 A-0 A-0 A-0 A-60 A-0 A-0 A-0 d * A-30 * * * * * * * * * - * A-60 A-30 A-30 A-30 A-0 A-60 A-0 A-0 A-30 * * h Note: To be applied to tables 9.5 and 9.6 as appropriate. a No special requirements are imposed upon bulkheads in methods IIC and IIIC fire protection. b In case of method IIIC "B" class bulkheads of "B-0" rating shall be provided between spaces or groups of spaces of 50 m 2 and over in area. c For clarification as to which applies, see paragraphs 2.3.2 and 2.3.4. d Where spaces are of the same numerical category and superscript d appear, a bulkhead or deck of the rating shown in the tables is only required when the adjacent spaces are for a different purpose (e.g. in category (9)). A galley next to a galley does not require a bulkhead but a galley next to a paint room requires an "A-0" bulkhead. e Bulkheads separating the wheelhouse, chartroom and radio room from each other may have a "B-0" rating. f An "A-0" rating may be used if no dangerous goods are intended to be carried or if such goods are stowed not less than 3 m horizontally from such a bulkhead. g For cargo spaces in which dangerous goods are intended to be carried, regulation 19.3.8 applies. h Bulkheads and decks separating ro-ro spaces shall be capable of being closed reasonably gastight and such divisions shall have "A" class integrity in so far as reasonable and practicable, if in the opinion of the Administration it has little or no fire risk. i Fire insulation need not be fitted if the machinery in category (7) if, in the opinion of the Administration, it has little or no fire risk. * Where an asterisk appears in the tables, the division is required to be of steel or other equivalent material but is not required to be of "A" class standard. However, where a deck, except an open deck, is penetrated for the passage of electric cables, pipes and vent ducts, such penetrations should be made tight to prevent the passage of flame and smoke. Divisions between control stations (emergency generators) and open decks may have air intake openings without means for closure, unless a fixed gas fire-fighting system is fitted. (1) Control stations Spaces containing emergency sources of power and lighting. Wheelhouse and chartroom. Spaces containing the ship’s radio equipment.
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