title: Dynamic evaluation of environmental impact due to tritium accidental release from the fusion reactor.
abstract: As one of the key safety issues of fusion reactors, tritium environmental impact of fusion accidents has attracted great attention. In this work, the dynamic tritium concentrations in the air and human body were evaluated on the time scale based on accidental release scenarios under the extreme environmental conditions. The radiation dose through various exposure pathways was assessed to find out the potential relationships among them. Based on this work, the limits of HT and HTO release amount for arbitrary accidents were proposed for the fusion reactor according to dose limit of ITER. The dynamic results aim to give practical guidance for establishment of fusion emergency standard and design of fusion tritium system.
authors.affiliation: Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei, Anhui 230031, China; University of Science and Technology of China, Hefei, Anhui 230027, China.
authors.forename: Baojie
authors.initials: B
authors.lastname: Nie
authors.affiliation: Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei, Anhui 230031, China. Electronic address: muyi.ni@fds.org.cn.
authors.forename: Muyi
authors.initials: M
authors.lastname: Ni
authors.affiliation: Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei, Anhui 230031, China.
authors.forename: Jieqiong
authors.initials: J
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Neutronics and Radiation Safety, Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei, Anhui 230031, China; University of Science and Technology of China, Hefei, Anhui 230027, China.
authors.forename: Yican
authors.initials: Y
authors.lastname: Wu
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis / Q000378:metabolism*; D006801:Humans; D008962:Models, Theoretical; D009688:Nuclear Reactors; D011829:Radiation Dosage; D000069079:Radiation Exposure; D011834:Radiation Monitoring; D014316:Tritium / Q000032:analysis / Q000378:metabolism*
chemical_list: D000396:Air Pollutants, Radioactive; D014316:Tritium
keywords: Accidental release; Fusion reactor; Public dose; Tritium release amount