| In recent years, with the rapid development of the chemical industry, production safety accidents occur frequently causing serious casualties and property losses. Governments and enterprises attach great importance to this issue and have developed a series of contingency plans to deal with it. Factory staffs are asked to participate emergency plans exercises so that they can master plan contents, but it is difficult to carry out the exercises regularly due to personal, venue, and time constraints. In addition, most of the staffs can not be well trained because they have few chance to practice during the exercises. The evaluation results for the exercise is lack of scientific quantitative analysis since staffs are in differnet environments and have different tasks.To solve the above problems, this paper proposes the emergency plan training system based on virtual exercise. The system provides a simulation of chemical accidents emergency rescue process and the users can learn about emergency rescue procedures and rescue knowledge by participating in virtual exercises. Meanwhile, the system can not only evaluate the overall effects of the emergency drills but also assess the performance of individual cases. The results on the one hand can help staffs find their inadequacy of emergency response capabilities, it can also verify the effectiveness of the plans.First of all, the methods, technology and key issues of emergency drill simulation under distributed online environment are studied in this paper. A three-phase method for plan training is presented which implements drill simulation management through process management, time management, scene management, and entity management. Based on dead reckoning and area of interest management, network delay factor is used as the feedback parameter to dynamically adjust the error threshold, which effectively solves scalability problems. Secondly, a comprehensive evaluation system of virtual emergency drills is proposed. The system includes assessment of overall exercise and evaluation of individual behavior based on quantitative analysis of exercise process data. Finally, an emergency plan training and evaluation system is designed and implemented with the integration of the above methods and mechanisms.The emergency plan training and evaluation system has been used in a petrochemical enterprise. Application results show that this system can not only help employees quickly master emergency plan and allows them to find personnel insufficient accurately through evaluation, but also is capable of verifying reasonableness of a plan. Therefore, the system has important practical significance and application value. |
