3.2 Assumptions
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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 2 - Guidelines for an Advanced Evacuation Analysis of New and Existing Passenger Ships1 - 3 Method of evaluation - 3.2 Assumptions

3.2 Assumptions

 This method of estimating the evacuation time is based on several idealized benchmark scenarios and the following assumptions are made:

  • .1 the passengers and crew are represented as unique individuals with specified individual abilities and response times;

  • .2 passengers and crew will evacuate via the main escape routes, as referred to in SOLAS regulation II-2/13;

  • .3 passenger load and initial distribution is based on chapter 13 of the FSS Code;

  • .4 unless otherwise stated, full availability of escape arrangements is considered;

  • .5 a safety factor having a value of 1.25 is introduced in the calculation to take account of model omissions, assumptions, and the limited number and nature of the benchmark scenarios considered. These issues include:

  • .5.1 the crew will immediately be at the evacuation duty stations ready to assist the passengers;

  • .5.2 passengers follow the signage system and crew instructions (i.e., route selection is not predicted by the analysis);

  • .5.3 smoke, heat and toxic fire products present in fire effluent are not considered to impact passenger/crew performance;

  • .5.4 family group behaviour is not considered in the analysis; and

  • .5.5 ship motion, heel, and trim are not considered.

Parent topic: 3 Method of evaluation
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