2 Doors of marginally larger dimensions
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1319 – Recommendation for the Evaluation of Fire Performance and Approval of Large Fire Doors – (11 June 2009) - Annex – Recommendation for the Evaluation of Fire Performance and Approval of Large Fire Doors - 2 Doors of marginally larger dimensions

2 Doors of marginally larger dimensions

  2.1 A fire door of marginally larger dimensions than a fire-tested fire door may be individually assessed and accepted for a specific project with the same classification, provided all of the following is met:

  • .1 dimensions (width, height) are not more than 15% above those of the tested door;

  • .2 the surface area of the door is not more than 10% above that of the tested door;

  • .3 the door design does not deviate in any other aspect from the one tested; and

  • .4 the tested door has successfully satisfied both insulation and integrity criteria for the following times, as appropriate:

    “B-0” 0 min insulation 36 min integrity
    “B-15” 18 min insulation 36 min integrity
    “A-0” 0 min insulation 68 min integrity
    “A-15” 18 min insulation 68 min integrity
    “A-30” 36 min insulation 68 min integrity
    “A-60” 68 min insulation 68 min integrity.

  2.2 If the door to be approved is larger than stated above and complies with the size requirements stated under section 3 below, the test should also include additional instrumentation as specified in paragraph 3.4.2 below, or equivalent arrangement.


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