Region-wise evaluation of gamma-ray exposure dose in decontamination operation after a nuclear accident

Autor: Hae Sun Jeong, Won Tae Hwang, Moon Hee Han, Eun Han Kim, Jo Eun Lee, Cheol Woo Lee
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Nuclear Engineering and Technology, Vol 53, Iss 8, Pp 2652-2660 (2021)
Druh dokumentu: article
ISSN: 1738-5733
DOI: 10.1016/j.net.2021.01.035
Popis: The gamma-ray exposure doses in decontamination operation after a nuclear accident were evaluated with a consideration of various geometrical conditions and specific gamma-ray energies. The calculation domain is organized with three residence types and each form is divided into two kinds of geometrical arrangements. The position-wise air KERMA values were calculated with an assumption of evenly distributed gamma-ray source based on Monte Carlo radiation transport analysis using the MCNP code. The radioactivity is initially set to be unity to be multiplied by the deposition value measured in the actual accident condition. The workforce data set depending on the target object was determined by modifying the Fukushima report. The external exposure doses for decontamination workers were derived from the calculated KERMA values and the workforce analysis. These results can be used to efficiently determine the workforce required by the characteristics of the area and the structure to be decontaminated within the dose limits.
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