Risk Assessment Method for Ship Based on Improved Fuzzy Multicriteria Decision-Making

Table 3

Index system of engine room fire factors.

Target layer	Factor layer	Indicator layer
Set of fire risk factors in the ship engine room	High-temperature object	Overheating of equipment surface
		Improper handling of lit cigarette butts
		Open fireworks in nonoperation area
		Improper use of fire in the kitchen
	Electrical equipment	Equipment short circuit
		Sparks produced by improper operation
		Illegal electricity use
		Failed fire alarm
	Chemical or mechanical heat	Equipment seal failure or leakage
		Fuel valve left open or pipe rupture
		Private storage of flammable and explosive items
		Cargo spontaneous combustion