开展事故工况诊断和释放源项分析，研判事故发展趋势，评价辐射后果，判定受影响区域范围。
The accident conditions shall be diagnosed and substances released shall be analyzed to determine the accident evolution trend, evaluate radiation consequences and define the areas affected.
环境影响评价是我国建设项目环境管理的一项基本制度，对控制新污染源起到了积极的作用。
ELA is a basic system of environmental administration in our country. It plays a positive role for controlling new pollution source.
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