The Application Of Formal Safety Assessment On CNG/ Diesel Oil Fual-fuel Ship In Three Gorges Reservoir Region

The Three Gorges Reservoir Region traveling and the guest freight transportation prospects for development are broad,the using the gaseous fuel has the region and the supply side convenience for shipping.Natural gas as a kind of motor fuel replacing oil is in line with the state's environmental policy and energy policy; the state project,called "sent to the West-East",will also make gas as a motor fuel to be more widely application;Fuel "tax reform" will further promote the implementation of natural gas applications.Therefore,the vessel of natural gas as the main fuel and diesel oil to ignite in resources,cost,environmental protection,is significantly advantage,and the compressed natural gas(CNG)/diesel dual-fuel ship has a broad application prospects.However,CNG/diesel dual-fuel ship as one kind of new ship,comparing with other ships,has the particularity in the part of fire protection,explosion-proof and so on.Because of the immature technology and management,this leads to many safety risks during the operation of ships.The engine room is regarded as the heart of the ship,and its running condition will have a direct impact on the ship safety and the shipping efficiency.Therefore,the use of the scientific method to the engine room of the ship to carry out safety assessment study on the prevention and reducing engine room danger is of great practical significanceThe purpose of the safe evaluation is to control or eliminate hazards to prevent accidents,to determine system security objectives,the planning and development of safety systems to achieve the optimization of the system to lay the foundation for security.In the ships domain,the formal safety assessment(FSA),which is a systematic and standardized ship safety analysis method that is come out in recent years and whose aim is to take out reasonable and effective risk control measures by a comprehensive,integrated consideration of the various aspects of safety factors through hazard identification,risk evaluation,evaluation of costs and benefits.The main elements of the paper are as follows:By using the formal safety assessment(FSA)as the guiding ideology of analyzing the safety evaluation of CNG / diesel dual-fuel ship engine room in Three Gorges Reservoir Region,according to the principle of the FSA's steps,the main content of this paper is divided into three parts:the hazard identification,the risk assessment and the decision-making on safety advices of CNG/diesel dual-fuel ship engine room.The hazard identification part: Through the systemic analysis of the ship's engine room from the crew factors,the engine room equipment factors,ship environmental factors and ship management factors,I set up the safety evaluation index system of the CNG/diesel dual-fuel ship engine room of the Three Gorges Reservoir Region;the risk assessment part:I set up the engine room safety assessment model of the CNG/diesel dual-fuel ship in the Three Gorges Reservoir Region according to the fuzzy comprehensive evaluation method,and confirm the safety evaluation index weight by using the analytic hierarchy process(AHP)method at the same time,and the evaluation model is proved through examples;the decision-making on safety advices:By the CNG/diesel dual fuel standards of ship models in the Three Gorges reservoir area as an example,I validate the feasibility of the AHP-fuzzy comprehensive safety evaluation model in engine room safety.At the same time I advance safety policy recommendations according to the evaluation index weights,the judgments of single-factor and the final judgments.