Dynamic Evacuation Routes for Personnel on a Naval Ship (DRAFT)
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We propose a “dynamic escape route system” for emergency evacuation of a naval ship. The system employs signals that adapt to the causative contingency and the crew’s physical distribution about the ship. A mixed-integer nonlinear programming model, with underlying network structure, optimizes the evacuation process. The network’s nodes represent compartments, closures (e.g., doors, hatches) and intersections, while arcs represent various types of passageways. The objective function integrates two potentially conflicting factors: average evacuation time, and the watertight and airtight integrity of the ship after evacuation. A heuristic solves the model approximately using a sequence of mixed-integer linear approximating problems. Using data for a Spanish frigate, with standard “static routes” specified by the ship’s designers, computational tests show that the dynamic system can reduce average evacuation times nearly 23%, and can improve a combined measure of ship integrity by up to 50%. In addition, plausible design changes to the frigate yield further, substantial improvements.
Naval Research Logistics, 55, pp. 785‐799.Center for Infrastructure Defense (CID) Paper.
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