Study On The Safety Of Maritime Dangerous Chemical Transportation Based On Dissipative Theory

Maritime Dangerous Chemical Transportation System lays a solid foundation for and guarantees the development of national economy. Characteristics of maritime transport of dangerous chemicals include significant openness, dynamics, uncertainty, irreversibility and catastrophy owing to the impacts of physical and chemical properties of dangerous chemicals and complex marine environment as well. Even though domestic and abroad scholars have been giving great concerns to the maritime safety of dangerous chemicals in recent decades, and various solutions for improving transport safety have been proposed, most of those proposals have certain limitations and one-sidedness. In light of the characteristics of maritime transportation of dangerous chemicals, the transporting safety is researched from the system energy and entropy based on dissipative theory, as well as working experience of the author obtained onboard.The constitution of MDCTS is first studied with Man-Machine-Environment System Engineering Theory in accordance with the impact of physical and chemical properties of the dangerous chemicals. Then the transporting model is presented, which consists of five safety elements, namely "Human","Ship","Environment","Cargo" and "Management". Dissipative Theory is applied to the study of safety based on the analysis of characteristics of the transport system.Considering the dynamics and openness characteristics of maritime transportation of dangerous chemicals and the definition of energy in physics, the concept of systematic "energy" is proposed and is employed as the researching target for evaluating the systematic reliability. In this dissertation, the general constitution of system energy, energy conservation and conversion, the potential energy dissipation in maritime transportation of dangerous chemicals are studied, and potential-energy function model is established. Hence, the two-pronged approaches of technology and management can be applied to enhance system reliability and to improve system safety.In allusion to the uncertainty of transportation for dangerous chemicals, the relation between entropy and stability is expounded, as well as the dissipation mechanism of the marine transportation, defining "entropy of MDCTS", establishing the evaluation model for entropy of system sasety. The transportation safety should be evaluated comprehensively taking into consideration of the system reliability (energy) and stability (safety entropy). In addition to the abovementioned, the inquiry into the principle of minimum risk path is furthered, and safety path selection methods upon uncertain conditions are proposed, drawing a conclusion to transportation safety evaluation for the dangerous chemicals.Upon the research and study on system energy, entropy and minimum risk path, the dissertation further looks into specific ways to promote transportation safety from safeguards technique and safety management perspectives, which includes the modle of flexible maneuvering in response to evaporation of dangerous chemicals, game theory in transportation safety management of dangerous chemicals etc.The system theory, nonlinear theory and dissipative theory constitute the theoretical basis as the energy and entropy being the research target to evaluate system safety of maritime transportation for dangerous chemicals. The study on maritime transport system safety of dangerous chemicals and management technology with the application of plume models and game theory not only explores the reliability and stability of the complex and uncertain system, but also enhances the safety evaluation and improves the guarantee technology in the filed of maritime traffic engineering.