Potential Accident Radiological Consequences and Siting of Commercial Nuclear District-Heating Reactor
商用低温核供热站潜在事故环境影响和厂址选择

The safety assessment and potential accident radiological consequences of nuclear district heating plants in some countries are reviewed in thispaper. The results of the preliminary accident analysis of a 200MW nuclear heating reactor which is planning to be built near a city in the north of China are given. The review and analysis show that the commercial heating plant provides assurance without undue radiological risk to the public. The emergancy planning and siting criteria of the commercial nuclear heating plant are discussed within the framework of Chinese and IAEA nuclear safety codes and guidelines. It is concluded that the planning for off-site emergency evacuation is not required, and that population distribution ceases to be an exclusion factor in the siting due to the high safety level of the heating plant. It is appropriate to establish a limited development area of about 2 km in radius, however, and to plan the some necessary emergency radiological environmen- tal monitoring and emergency communication based on the ALARA principle.