Study On VTS Benefit Evaluation And Risk Assessment

Vessel Traffic Services (VTS) is a service implemented by a Competent Authority, designed to improve safety and efficiency of vessel traffic and to protect the environment. The service should have the capability to interact with the traffic and respond to traffic situations developing in the VTS area.VTS has been developed for many years in China and brought on the improvements in efficiency, safety and the reduction of potential environment pollution. But there is absence of systemic evaluation for the validity of the services provided by VTS.This dissertation was completed according to the scientific study project of Ministry of Communications, which Study on National Port VTS Benefit Evaluation and Risk Assessment. The dissertation gave a more integrated cost-benefit evaluation model of VTS suits the situation of our country, then conducted risk assessment and cost-benefit evaluation study on Tianjin port zone and Tianjin VTS. The results of the study tallied with actual situation. The most study content of this paper was as follows.l.Made lots of surveys, statistics and analyses of traffic, safety and navigation environment of Tianjin port zone. Gave results of analyses and forecast of traffic quantities. These were the bases of benefit evaluation.2.According to the operation experience and data of Tianjin VTS, this dissertation gave a cost-benefit analysis model of VTS and found a universal analysis method suits the situation of our country by using of technology economics theory and engineering evaluation system method .3.This dissertation carried out the analysis of cash quantification on cost-benefit of Tianjin VTS and gave the result of evaluation. Then carried out a qualitative analysis to other parts.4. At the same time, assessed the risk of port zone with the method of fuzzy synthetic evaluation , SJ(Subjective Judgement) method and computer simulation based on the electronic chart. The evaluation and simulation results tally with the facts.5.Not only applied the evaluation method of VTS MANUAL of IALA, but also improved it and provided theory and calculation basis for domestic such research. For instance, VTS MANUAL only gave the frame and suggestion on operation benefit evaluation.6.About the reason for actual benefits(1) To grasp the kernel points, and promote the accuracy of the evaluation, the concept of calculating safety benefit by partitioning area is proposed.(2) At the analysis of the decrease of time delay because of grounding, not only accidents number that year, but also the decrease of the grounding accident rate that year, when VTS is in operation, relative to historical accidents rate, are calculated.