View the relationship between environmental impact assessment and safety assessment dialectically

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　 The occurrence of major safety accidents inevitably leads to secondary environmental problems; it can be said that safety issues and environmental issues go hand in hand. Few safety issues can be completely controlled within the factory premises without leaking out and resulting in environmental problems. In some cases, when environmental issues become more complex, they even overshadow concerns over safety issues, leading people to wrongly blame environmental protection efforts while ignoring the fact that unsafe production practices are the real culprit. 　　In response to this, questions such as **how exactly safety assessments and environmental impact assessments, which provide technical support for regulation, should be carried out, in what order they should take place, and what issues each one needs to address, have attracted considerable public attention and sparked controversy. The author believes that a careful analysis of the dialectical relationship between these two evaluations is necessary to ensure that each performs its proper function. 　　Environmental impact assessment refers to the methods and systems for analyzing, predicting, and evaluating the potential environmental impacts that may arise after the implementation of planning and construction projects, as well as for proposing strategies and measures to prevent or mitigate adverse environmental effects, along with carrying out follow-up monitoring. Safety assessment aims to ensure the safety of engineering projects and systems by applying the principles and methods of safety systems engineering. It involves identifying and analyzing potential hazards and harmful factors within such projects and systems, assessing the likelihood and severity of accidents and occupational hazards, and providing a scientific basis for formulating preventive measures and making management decisions. 　　EIA and safety assessment have many similarities. Firstly, they are all necessary steps prior to the commencement of construction projects; they must be carried out by qualified institutions, with technicians holding the appropriate professional qualifications completing the work in accordance with specific technical requirements and submitting reports, all of which must be approved by the **administrative authorities. Secondly, the project construction unit assumes primary responsibility and implements the \"three simultaneities\" system. Finally, the evaluation process requires the identification and assessment of risk sources, as well as the implementation of strict preventive and control measures. There are also many differences between the two: First, in terms of the scope of evaluation, environmental assessment covers a wider range than safety assessment. China’s environmental impact assessment system was established in the 1970s, and its scope was expanded to the planning level in 2002. As for the scope of safety assessments, in accordance with Article 29 of the Work Safety Law, only mining and metal smelting construction projects, as well as construction projects used for the production, storage, and handling of hazardous materials, are required to undergo safety assessments in accordance with **relevant regulations. 　　Second, the focus of attention for the two is different. Environmental impact assessment is conducted to evaluate the potential environmental impacts that may arise from a planned or constructed project once it is operational, with an emphasis on environmental risk assessment. Safety assessment, on the other hand, aims to identify and evaluate the likelihood and severity of accidents and occupational hazards in projects and systems, with a focus on assessing the safety issues for personnel. 　　Third, their working methods are different. The environmental risk assessment in environmental impact assessment primarily focuses on environmental hazards transmitted through environmental media such as air, water, and soil. Safety assessment is aimed at safety incidents such as explosions, fires, and poisonings caused by human factors or production equipment. Furthermore, environmental impact assessments focus on the effects outside the plant boundaries, while safety assessments strive to keep potential accidents within those boundaries in order to minimize the impact on the surrounding environment. 　　EIA and safety assessment focus on the same risk sources; therefore, there are cases where elements of the safety assessment appear within the EIA, and vice versa. Given that safety accidents are of an instantaneous nature while environmental impacts are relatively long-lasting, after a sudden safety accident occurs, attention quickly shifts from handling the safety issue to addressing environmental emergencies, leading to many doubts regarding environmental impact assessments. It is therefore necessary to clarify the responsibilities associated with environmental impact assessments and safety assessments. 　　The safety assessment system is very comprehensive. First, it specifies that construction units meeting the requirements must carry out safety assessment work ； Second, the safety assessment process is comprehensive, comprising three stages: preliminary assessment, acceptance assessment, and current status assessment. The objectives and evaluation criteria for each stage are very clear ； Third, the on-site inspection is organized meticulously ； Fourth, the evaluation content is detailed and the conclusions are specific ； Fifth, the legal status of the safety assessment report is clear. In particular, the **Detailed Rules for Safety Assessment of Chemical Construction Projects** specify procedures for carrying out preliminary preparations, dividing assessment units, analyzing risk levels, preventing accidents, and managing emergency situations. By following these rules, it becomes possible to ensure that projects can be carried out successfully and to reduce the impact of accidents. Safety is the highest responsibility and the top priority for the construction party. If safety is not ensured, subsequent work cannot proceed. 　　Therefore, from a theoretical perspective, safety assessments should be carried out prior to environmental impact assessments. Only by completing the safety assessment can it be determined which pollutants can be disposed of within the plant premises, and which pollutants may leak outside the plant boundaries and affect the surrounding environment. Comprehensiveness in the environmental impact assessment is a fundamental requirement; various scenarios such as normal operation, partial failures, and major accidents need to be taken into consideration, and the results of safety assessments should also be included in the analysis. In particular, it is essential to evaluate the environmental impacts under the most unfavorable conditions, as otherwise the potential for maximum environmental damage may not be properly assessed. 　　Environmental impact assessment and safety assessment are carried out by separate qualified agencies, and the project owner should take the initiative to coordinate the work between these two agencies. First, prevent safety accidents from occurring. Second, in the event of an emergency, there must be a plan in place to minimize the environmental impact. Only with a thorough safety assessment can an environmental assessment have a foundation. Environmental impact assessments must make rational use of the results of safety assessments, taking adverse environmental impacts into more thorough consideration to prevent being unprepared for environmental emergencies in the event of major safety accidents.