Limits...
Effect of the duration time of a nuclear accident on radiological health consequences.

Jeong H, Park M, Jeong H, Hwang W, Kim E, Han M - Int J Environ Res Public Health (2014)

Bottom Line: In the case of nuclear accidents, the total emissions of radioactive materials can be classified into several categories.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.Furthermore, it is judged that the proper control of the emission time of a nuclear accident can minimize the health effects on residents.

View Article: PubMed Central - PubMed

Affiliation: Nuclear Environment and Safety Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong, Daejeon 305-353, Korea. jeong1208@kaeri.re.kr.

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.

Show MeSH

Related in: MedlinePlus

Frequency distribution of hourly radiation doses.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC3987009&req=5

ijerph-11-02865-f006: Frequency distribution of hourly radiation doses.

Mentions: Figure 6 shows the frequency distribution of the radiation dose in Hongnong, a highly populated region, when the duration time of an accident is 96 hours. Radiation dose shows the gamma-type distribution and 1 mSv, which is the limit of radiation dose for an average person located around the 50th percentile. This means that if the accident happens in a certain period, the probability that the radiation dose does not exceed 1 mSv is about 50% even without any specific protective actions in the highly populated area.


Effect of the duration time of a nuclear accident on radiological health consequences.

Jeong H, Park M, Jeong H, Hwang W, Kim E, Han M - Int J Environ Res Public Health (2014)

Frequency distribution of hourly radiation doses.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3987009&req=5

ijerph-11-02865-f006: Frequency distribution of hourly radiation doses.
Mentions: Figure 6 shows the frequency distribution of the radiation dose in Hongnong, a highly populated region, when the duration time of an accident is 96 hours. Radiation dose shows the gamma-type distribution and 1 mSv, which is the limit of radiation dose for an average person located around the 50th percentile. This means that if the accident happens in a certain period, the probability that the radiation dose does not exceed 1 mSv is about 50% even without any specific protective actions in the highly populated area.

Bottom Line: In the case of nuclear accidents, the total emissions of radioactive materials can be classified into several categories.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.Furthermore, it is judged that the proper control of the emission time of a nuclear accident can minimize the health effects on residents.

View Article: PubMed Central - PubMed

Affiliation: Nuclear Environment and Safety Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong, Daejeon 305-353, Korea. jeong1208@kaeri.re.kr.

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.

Show MeSH
Related in: MedlinePlus