Abstract: The emergency action level of nuclear fuel cycle facilities is one of the grading criteria for the emergency status of nuclear fuel cycle facilities. The grading of emergency status is also an important basis for formulating the level of emergency operations. This paper introduces the history and current situation of the development of emergency classification of nuclear fuel cycle facilities in the U.S. NRC and China. This paper also compares the differences in the emergency status classification of nuclear fuel cycle facilities between China and the United States NRC. Finally, analysis results are discussed. It is recommended to conduct a complete secondary PSA study, to provide accident spectrum, and to provide sufficient technical support for the development of emergency status classification and emergency action level.

Key words: Nuclear fuel cycle facility, emergency action level, emergency classification, spent fuel reprocessing facilities