title: Effect of the duration time of a nuclear accident on radiological health consequences.
abstract: This study aimed to quantify the effect of duration time of a nuclear accident on the radiation dose of a densely populated area and the resulting acute health effects. In the case of nuclear accidents, the total emissions of radioactive materials can be classified into several categories. Therefore, the release information is very important for the assessment of risk to the public. We confirmed that when the duration time of the emissions are prolonged to 7 hours, the concentrations of radioactive substances in the ambient air are reduced by 50% compared to that when the duration time of emission is one hour. This means that the risk evaluation using only the first wind direction of an accident is very conservative, so it has to be used as a screening level for the risk assessment. Furthermore, it is judged that the proper control of the emission time of a nuclear accident can minimize the health effects on residents.
authors.affiliation: Nuclear Environment and Safety Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong, Daejeon 305-353, Korea. jeong1208@kaeri.re.kr.
authors.forename: Hyojoon
authors.initials: H
authors.lastname: Jeong
authors.affiliation: Nuclear Environment and Safety Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong, Daejeon 305-353, Korea. pmisun@kaeri.re.kr.
authors.forename: Misun
authors.initials: M
authors.lastname: Park
authors.affiliation: Nuclear Environment and Safety Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong, Daejeon 305-353, Korea. haesunin@kaeri.re.kr.
authors.forename: Haesun
authors.initials: H
authors.lastname: Jeong
authors.affiliation: Nuclear Environment and Safety Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong, Daejeon 305-353, Korea. wthwang@kaeri.re.kr.
authors.forename: Wontae
authors.initials: W
authors.lastname: Hwang
authors.affiliation: Nuclear Environment and Safety Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong, Daejeon 305-353, Korea. ehkim@kaeri.re.kr.
authors.forename: Eunhan
authors.initials: E
authors.lastname: Kim
authors.affiliation: Nuclear Environment and Safety Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong, Daejeon 305-353, Korea. mhhan@kaeri.re.kr.
authors.forename: Moonhee
authors.initials: M
authors.lastname: Han
mesh_terms: D000396:Air Pollutants, Radioactive / Q000009:adverse effects*; D000398:Air Pollution, Radioactive / Q000009:adverse effects*; D006801:Humans; D015233:Models, Statistical; D011829:Radiation Dosage; D011832:Radiation Injuries / Q000209:etiology*; D018788:Radioactive Hazard Release; D018570:Risk Assessment; D013997:Time Factors
chemical_list: D000396:Air Pollutants, Radioactive