4 Scenarios considered
Clasification Society 2024 - Version 9.40
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 - Appendix 2 - Example of Application - 4 Scenarios considered

4 Scenarios considered

  4.1 Case 1 refers to a day scenario in MVZ 1, according to chapter 13 of the FSS Code, the 449 persons are initially distributed as follows: 42 in deck 5; 65 in deck 6 (42 in the fore part and 23 in the aft part); 26 in deck 7; 110 in deck 9; 96 in deck 10; and 110 in deck 11. Deck 8 (assembly station) is empty. In accordance with paragraph 2.2 of appendix 1 to the Guidelines, all persons in the cabins are assumed to simultaneously move into the corridors. The corresponding initial conditions are:

MVZ 1 - Corridors Persons Initial density D (p/m2) Initial specific flow Fs (p/(ms)) Calculated flow Fc (p/s) Initial speed of persons S (m/s)
Deck 5 – corridor 1 11 0.94 0.85 0.77 1.03
Deck 5 – corridor 2 12 0.67 0.73 0.65 1.14
Deck 5 – corridor 3 8 0.94 0.85 0.77 1.04
Deck 5 – corridor 4 11 0.61 0.7 0.63 1.16
Deck 6 – corridor 1 11 0.94 0.85 0.77 1.03
Deck 6 – corridor 2 12 0.67 0.73 0.65 1.14
Deck 6 – corridor 3 8 0.94 0.85 0.77 1.04
Deck 6 – corridor 4 11 0.61 0.7 0.63 1.16
Deck 6 – corridor 5 11 0.94 0.85 0.77 1.03
Deck 6 – corridor 6 12 0.67 0.73 0.65 1.14
Deck 7 – corridor 1 4 0.74 0.76 0.69 1.11
Deck 7 – corridor 2 4 0.49 0.64 0.58 1.2
Deck 7 – corridor 3 6 0.44 0.58 0.52 1.2
Deck 7 – corridor 4 4 0.74 0.76 0.69 1.11
Deck 7 – corridor 5 6 0.48 0.62 0.56 1.2
Deck 7 – corridor 6 2 0.15 0.19 0.17 1.2
Deck 7 – corridor 7 0 0 N.A. N.A. N.A.
Deck 7 – corridor 8 0 0 N.A. N.A. N.A.
Deck 11 – corridor 1 55 1.7 1.21 1.09 0.75
Deck 11 – corridor 2 55 1.7 1.21 1.09 0.75
Deck 10 – corridor 1 48 1.48 1.11 1 0.83
Deck 10 – corridor 2 48 1.48 1.11 1 0.83
Deck 9 – corridor 1 55 1.7 1.21 1.09 0.74
Deck 9 – corridor 2 55 1.7 1.21 1.09 0.74
MVZ 1 – Stairs, doors & corridors Persons (N) Total including those from other routes Specific flow Fs in (p/(ms)) Max specific flow Fs (p/(ms)) Specific flow Fs (p/(ms)) Calculated flow Fc (p/s) Speed of persons S (m/s) Queue Comments
From current route Notes
Deck 5 – door 1 34 34 2.28 1.3 1.3 1.17 N.A. Yes From corridors 1, 2 and 4 1
Deck 5 – door 2 8 8 1.85 1.3 0.85 0.77 N.A.   From corridor 3 1
Deck 5 – stair A 42 42 1.43 0.88 0.88 1.188 0.44 Yes From doors 1 and 2 1, 2
Deck 6 – door 1 34 34 2.58 1.30 1.3 1.17 N.A. Yes From corridors 1, 2, and 4; 1
Deck 6 – door 2 8 8 0.85 1.30 0.85 0.77 N.A.   From corridor 3 1
Deck 6 – stair A 42 84 2.32 0.88 0.88 1.188 0.44 Yes From doors 1 and 2, from deck 5 1, 2
Deck 6 – door 3 11 11 0.85 1.30 0.85 0.77 N.A.   From corridor 5 1
Deck 6 – door 4 12 12 0.73 1.30 0.81 0.73 N.A.   From corridor 4 1
Deck 6 – stair B 23 23 1.05 0.88 0.88 1.188 0.44 Yes From doors 3 and 4 1, 2
Deck 7 – corridor 8 8 92 0.78 1.3 0.78 1.88 1.09   From corridors 3 and 6, from deck 6, stair A 1, 3
Deck 7 – corridor 7 18 125 1.75 1.3 1.3 3.12 0.67 Yes From corridors 2, 5 and 8, from deck 6, stair B 1, 4
Deck 7 – stair C 8 133 3.21 0.88 0.88 1.232 0.44 Yes From corridors 1, 4 and 7; up to deck 8 1, 2, 5
Deck 11 – door 1 55 55 1.21 1.3 1.21 1.09 N.A.   To stair C 1
Deck 11 – door 2 55 55 1.21 1.3 1.21 1.09 N.A.   To stair C 1
Deck 11 – stair C 110 110 0.78 1.1 0.78 2.17 0.81   Down to deck 10 1, 2
Deck 10 – door 1 48 48 1.11 1.3 1.11 1 N.A.   To stair C 1
Deck 10 – door 2 48 48 1.11 1.3 1.11 1 N.A.   To stair C 1
Deck 10 – stair C 96 206 1.49 1.1 1.10 3.08 0.55 Yes Down to deck 9 1, 2
Deck 9 – door 1 55 55 1.21 1.3 1.21 1.09 N.A.   To stair C 1
Deck 9 – door 2 55 55 1.21 1.3 1.21 1.09 N.A.   To stair C 1
Deck 9 – stair C 110 316 1.88 1.1 1.10 3.08 0.55 Yes Down to deck 8 1, 2
Deck 8 – path 1 0 200 0.96 1.3 0.96 1.92 0.95   To assembly stat 1, 6
Deck 8 – path 2 0 249 0.96 1.3 0.96 2.4 0.95   To assembly stat 1, 6

Note 1 The specific flow “Fs in” is the specific flow entering the element of the escape route; the maximum specific flow is the maximum allowable flow given in table 1.3 of appendix 1 of the Guidelines; the specific flow is the one applicable for the calculations i.e., the minimum between “Fs in” and the maximum allowable; when “Fs in” is greater than the maximum allowable, a queue is formed.

Note 2 Some stairs are used by both persons coming from below (or above) and persons coming from the current deck considered; in making the calculation for a stair connecting deck N to deck N+1 (or deck N-1), the persons to be considered are those entering the stairs at deck N plus those coming from all decks below (or above) deck N.

Note 3 At deck 7, 8 persons initially move from the cabins into corridor 8 and 84 persons arrive to corridor 8 from deck 6, stair A; the total is therefore 92 persons.

Note 4 At deck 7, 18 persons initially move from the cabins into corridor 7, 23 persons arrive to corridor 7 from deck 6 stair B and 84 persons arrive to corridor 8 from deck 7, corridor 7; the total is therefore 125 persons.

Note 5 At deck 7, 8 persons initially move from the cabins directly to the stair C and 125 persons arrive to stair C from corridor 8; the total is therefore 133 persons.

Note 6 At deck 8 (assembly/muster station), no persons are initially present, therefore the escape routes on this deck are then used by the total number of persons arriving from above and/or below.

  4.2 Case 2 refers to a day scenario in MVZ 2, according to chapter 13 of the FSS Code, the 1,138 persons are initially distributed as follows: 469 in deck 6; 469 in deck 7; and 200 in deck 9. Deck 8 (assembly/muster station) is initially empty. In accordance with paragraph 2.2 of appendix 1 to the Guidelines, all persons are assumed to simultaneously begin the evacuation and use the exit doors at their maximum specific flow. The corresponding initial conditions are:

MVZ 2 - Doors Persons Initial density D (p/m2) Initial Specific flow Fs (p/(ms)) Calculated flow FC (p/s) Initial speed of persons S (m/s)
Deck 6 – door A 100 N.A. 1.3 1.3 N.A.
Deck 6 – door B 100 . N.A. 1.3 1.3 N.A
Deck 6 – door C PS 134 N.A. 1.3 1.76 N.A.
Deck 6 – door C SB 135 N.A. 1.3 1.76 N.A.
Deck 7 – door A 170 N.A. 1.3 2.21 N.A.
Deck 7 – door B 170 N.A. 1.3 2.21 N.A.
Deck 7 – door C PS 65 N.A. 1.3 1.17 N.A.
Deck 7 – door C SB 64 N.A. 1.3 1.17 N.A.
Deck 9 – door C SB 100 N.A. 1.3 1.3 N.A.
Deck 9 – door C PS 100 N.A. 1.3 1.3 N.A.
MVZ 1 – Stairs, doors & corridors Persons (N) Total including those from other routes Specific flow Fs in (p/(ms)) Max specific flow Fs (p/(ms)) Specific flow Fs (p/(ms)) Calculated flow Fc (p/s) Speed of persons S (m/s) Queue Comments
From current route Notes
Deck 6 – stair A 100 100 0.93 0.88 0.88 1.23 0.44 Yes up to deck 7 1
Deck 6 – stair B 100 100 0.93 0.88 0.88 1.23 0.44 Yes up to deck 7 1
Deck 6 – stair C 269 269 1.1 0.88 0.88 2.82 0.44 Yes up to deck 7 1
Deck 7 – stair A 170 270 1.68 0.88 0.88 1.8 0.44 Yes up to deck 8 1, 2
Deck 7 – stair B 170 270 1.68 0.88 0.88 1.8 0.44 Yes up to deck 8 1, 2
Deck 7 – stair C 129 398 1.61 0.88 0.88 2.82 0.44 Yes up to deck 8 1, 2
Deck 9 – stair C 200 200 0.81 1.1 0.81 2.60 0.78   down to deck 8  
Deck 8 – path 1 0 266 1.2 1.3 1.2 2.41 0.75   from decks 7 and 9 1, 3
Deck 8 – path 2 0 332 1.2 1.3 1.2 3.01 0.75   from decks 7 and 9 1, 3
Deck 8 – door A 0 270 0.88 1.3 0.88 1.8 N.A.   from deck 7 1, 3
Deck 8 – door B 0 270 0.88 1.3 0.88 1.8 N.A.   from deck 7 1, 3

Note 1 The specific flow “Fs in” is the specific flow entering the element of the escape route; the maximum specific flow is the maximum allowable flow given in table 1.3 of appendix 1 of the Guidelines; the specific flow is the one applicable for the calculations i.e., the minimum between “Fs in” and the maximum allowable; when “Fs in” is greater than the maximum allowable, a queue is formed.

Note 2 Some stairs are used by both persons coming from below (or above) and persons coming from the current deck considered; in making the calculation for a stair connecting deck N to deck N+1 (or deck N-1), the persons to be considered are those entering the stairs at deck N plus those coming from all decks below (or above) deck N.

Note 3 At deck 8 (assembly/muster station), no persons are initially present, therefore the escape routes on this deck are then used by the total number of persons arriving from above and/or below.


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