Selecting China＇s strategic petroleum reserve sites by multi-objective programming model

An important decision for policy makers is selecting strategic petroleum reserve sites. However, policy makers may not choose the most suitable and efficient locations for strategic petroleum reserve（SPR） due to the complexity in the choice of sites. This paper proposes a multi-objective programming model to determine the optimal locations for China＇s SPR storage sites. This model considers not only the minimum response time but also the minimum transportation cost based on a series of reasonable assumptions and constraint conditions. The factors influencing SPR sites are identified to determine potential demand points and candidate storage sites. Estimation and suggestions are made for the selection of China＇s future SPR storage sites based on the results of this model. When the number of petroleum storage sites is less than or equals 25 and the maximum capacity of storage sites is restricted to 10 million tonnes, the model＇s result best fit for the current layout scheme selected thirteen storage sites in four scenarios. Considering the current status of SPR in China,Tianjin, Qingdao, Dalian, Daqing and Zhanjiang, Chengdu,Xi＇an, and Yueyang are suggested to be the candidate locations for the third phase of the construction plan. The locations of petroleum storage sites suggested in this work could be used as a reference for decision makers.

Design of Mooring System for Oil Storage Vessels

The floating oil storage system has been proposed as a new facility for Strategic Petroleum Reserve (SPR) in China. Mooring is one of the key technologies to ensure the safety, reliability, and performance of the oil storage system. This paper describes the concept, analysis, design and reliability of the mooring system. For mooring system design of these oil vessels, analysis is essential of the behavior of the vessel in connection with mooring facilities of nonlinear resilience. A nonlinear mathematical model for analyzing a moored vessel is established and solved. Some results of numerical simulations are presented. Assessment of the safety regarding the mooring system in terms of failure probability is carried out. Another simulation model for calculating the failure probability of the mooring system is proposed. The design parameters that have an influence on the characteristics of the failure probability have been identified. The simulation results,show that the mooring system has an annual reliability value of 0.999998. The proposed simulation method is proved to be effective in quantitative evaluation of the safety of the mooring system for floating oil storage vessels.

RESEARCH ON THE FLOATING OIL STORAGE SYSTEM FOR STRATEGIC PETROLEUM RESERVE

The problem of petroleum safety is closely related to national politics andeconomics security and becomes one of key for discussion in China. The floating oil storage systemhas been proposed as a new facility for Strategic Petroleum Reserve (SPR) in our country. There aresome differences in solving this problem. Although many of domestic research institutions arestudying the project of SPR, the research is separate, and lack of comprehensive consideration, andfails to make a complete and scientific demonstration in many aspects, such as oil storage capacity,selection of storage sites, storage facilities, technologic and economic feasibility, riskassessment, etc. Therefore, no mature and systematic petroleum reserve theories have been formed upto now. Peoples argue the issue of objective of SPR, function, mode, cost, effect, etc. There arestill many bifurcations, so, it is necessary to make more detailed demonstration, and provide somescientific decision-making strategy for the governments. In this paper, several significant problemsare solved, for instance, the option of SPR facilities, the research on the principalcharacteristics of floating oil storage vessels, the a-nalysis of mooring system for oil storagevessels, the design of breakwater and the calculation of failure probability, the risk assessment offloating oil storage system, etc.