【正文】 ions issued by the federal highly hazardous chemical process safety management shall be pleted within five years, risk assessment, and later on has been pleted to the dangerous level assessment reconfirmation. EPA released the Chemical Accident Prevention Provisions also have to conduct risk analysis and evaluation provisions. European Community in 1996, the 1982 Seveso directive has been modified, the revised Directive (96/82/EC major accident hazards of hazardous substances control) requires the Member States in the enterprise security management system should be involved identification, evaluation of major hazards amendments to implement the normal operation or abnormal operation caused significant risk to the system identification methods to evaluate the possibility of significant risk and severity. 2. The role of safety assessment (1) can make the system effective in reducing accidents and occupational hazards Predict, prevent the occurrence of accidents and occupational hazards, is the central task of modern safety management. Safety evaluation system, the system can identify the weak links and can lead to accidents occurring conditions and occupational hazards, through systematic analysis of accidents and also to find the real cause of occupational hazards, in particular, can find out the unanticipated Easy neglected risk factors and occupational hazards, and through quantitative analysis, forecasting the occurrence of accidents and occupational hazards and the possibility of the seriousness of the consequences, which can take the appropriate countermeasures to prevent and control the occurrence of accidents and occupational hazards. (2) can carry out safety management system Modern industry is characterized by large, continuous and automated, the increasing plexity of the production process, all aspects and processes are interrelated, interaction, mutual restraint. System safety assessment is through 畢業(yè)論文 systematic analysis, evaluation, prehensive, systematic, anic, production systems, preventive treatment of security issues, rather than in isolation, a piecemeal production system to solve the security issue and realize the system security management. Safety management system include: ① found that accidents。s Occupational Safety Management system trial standard mainly consists of five elements, in the plan element will be hazard identification, safety assessment and hazard control plan as an important ponent. (3) Safety evaluation of being an important means of major industrial accidents To prevent major industrial accidents, the ILO in 1993 adopted the Convention on the Prevention of Major Industrial Accidents, which requires employers to submit security report, security report the contents of the first one is the identification and analysis of risk and the accident risk assessment, including consideration of possible interactions between various substances. ILO published in 1988, Major Incident Control Practical Handbook will be security assessment as the business 畢業(yè)論文 ma nager39。s Responsible Care will, Safety Assessment as a support the implementation of procedures to be followed Partnership one of nine work, the . Occupational Safety and health management system, British Standard BS 8800, Australian Standard AS 1470 also includes a safety evaluation of content。s Labor requires new construction, renovation of the chemical implementation of six stages of chemical plant safety assessment. Britain and even that new enterprises may not start on the safety assessment. China will secure the project evaluation as the three simultaneous A new element is to make the three simultaneous further scientific work and an important measure of institutionalization. In 1992, the Bureau of Technical Supervision issued a light gas and light gasification plant safety evaluation of products General GBl3548 92 mandatory national standard, the standard set forth in the safety assessment principles and methods. In 1992, the Ministry of Labor issued the lightgasification product gas and safety regulations LD 311 92 ministerial standard, the standard provides that the preliminary design approval must be acpanied by safety and industrial hygiene evaluation report .... In October 1996, the Ministry of Labor issued a construction project (engineering) work safety and health supervision requirement, which states: joint 畢業(yè)論文 hearing before the preliminary design must be submitted to the administrative department of labor occupational safety and health preconstruction project evaluation report and preliminary design documents [including the Labor Safety and Health of special articles,] and the related drawings. In February 1998, the Ministry of Labor issued a construction project (engineering) work safety and health management practices preassessment of the safety assessment of the specific content of a detailed requirements. (2) Safety evaluation of safety management standards in the basic content With industrial development, quality assurance system and environmental system to get people39。 畢業(yè)論文 原文： 《 Some Opinions about Safety Evaluation》 Evaluation of safety is one that by prehensire safe ergonomics, systematic project of safety, we examine and forecast the safety awareness of the staff members and their ability to clear stoppage, the conditions of equipments and the hidden peril,the present conditions of the enviroment,and the existing unsafe factors,so as to determine the degree of danger of an enterprise. According to the factors which way cause danger, we take necessary measures so as to prevent the accident before it