Research On Classification And Gradation Of Accident Potential Of Special Equipment Based On Risk

In recent years, a number of special equipment in China shows the trend of rapid growth, resulting in special equipment supervision is increasing pressure. Because of unreasonable design, non-standard manufacture, careless installation and tests, inadequate inspection measures, inadequate routine and periodic maintenance, lack of management systems, fail of safety device and many other reasons, there are many accident potential of special equipment use period. So, accident potential become an important bottleneck promble for government supervision special equipment. Accident potential are the precondition and due to the accident. Effectively eliminate and control accident potential, in order to control advance, and achieve special equipment accident prevention goals.This article from the accident causing theory, the domestic and foreign related standard comparison and other industry practices, three aspects to consider, to gives a relatively scientific and reasonable definition about potential hazards of special equipment. According to the basic accidents information of special equipment, safety engineering principles and taxonomy theory, define the classification system of special equipment potential hazards, man-machine -material -management. Crane, as an example, are identified and analysed about potential hazards of special equipment. Give crane identification table of potential hazards.Through the existing data analysis and other industry reference, determine the accident consequences severity level and probability level about special equipment that can cause. Consequences severity level need consider 5 facts. There are possible casualties, or an occupational disease; loss of property; damage or disrupt of the device itself, destruction of the surrounding environment; resulting from Bad social and political impacts (including the transfer of a large number of people stranded, or poisoning emergencies or triggered secondary explosions, fires and other accidents) Each side is divided into four classes, and this paper gives the specific criteria. In the probability, through the data statistics and analysis, with elevator, for example, gives the failure of the estimated probability。Finally, determine the special equipment accident hidden danger classification standard, by risk matrix method. Special equipment potential hazards classification is to facilitate the identification of risks. Focus on investigation and scientific management. Not only reduced the special equipment safety inspectors’workload, also can help enterprise self-examination potential hazards, save costs and reduce accident.