3.3 Scenarios to be considered
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1238 – Guidelines for Evacuation Analysis for New and Existing Passenger Ships – (30 October 2007) - Annex 1 - Guidelines for a Simplified Evacuation Analysis for New and Existing Passenger Ships - 3 Method of evaluation - 3.3 Scenarios to be considered

3.3 Scenarios to be considered

  3.3.1 As a minimum, four scenarios (cases 1, 2, 3 and 4) should be considered for the analysis as follows:

  • .1 case 1 (primary evacuation case, night) and case 2 (primary evacuation case, day) in accordance with chapter 13 of the FSS Code; and

  • .2 cases 3 and 4 (secondary evacuation cases). In these cases only the main vertical zone, which generates the longest travel time, is further investigated. These cases utilize the same population demographics as in case 1 (for case 3) and as in case 2 (for case 4). The following are two alternatives that should be considered for both case 3 and case 4. Alternative 1 should be considered if possible:

    • .2.1 alternative 1: one complete run of the stairways having largest capacity previously used within the identified main vertical zone is considered unavailable for the simulation; or

    • .2.2 alternative 2: 50% of the persons in one of the main vertical zones neighbouring the identified main vertical zone are forced to move into the zone and to proceed to the relevant assembly. The neighbouring zone with the largest population should be selected.

  3.3.2 If the total number of persons on board calculated, as indicated in the above cases, exceeds the maximum number of persons the ship will be certified to carry, the initial distribution of people should be scaled down so that the total number of persons is equal to what the ship will be certified to carry.

  3.3.3 Additional relevant scenarios may be considered as appropriate.

Parent topic: 3 Method of evaluation
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