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JAEA Reports

Individual exposure dose assessment of residents for lifting of evacuation orders (Contract research)

Sato, Rina; Sanada, Yukihisa; Yoshimura, Kazuya; Nakayama, Mariko*

JAEA-Review 2022-055, 42 Pages, 2023/01

JAEA-Review-2022-055.pdf:1.31MB

The evacuation order zones established after the accident at the Tokyo Electric Power Company's Fukushima Daiichi Nuclear Power Station have been reorganized according to the decrease in ambient dose equivalent rates and the decontamination progress. It has been decided to decontaminate the difficult-to-return zones and lift the evacuation order depending on the evacuee's intention of returning to the areas over the course of the 2020s. In order to consider the future of individual exposure dose assessment for residents for lifting of the evacuation orders, the methods and characteristics of the assessment that have been conducted after the accident using personal dosimeter measurements and simulations were systematically reviewed. This report summarized the results of the review.

Journal Articles

Calculation of fluence-to-effective dose conversion coefficients for the operational quantity proposed by ICRU RC26

Endo, Akira

Radiation Protection Dosimetry, 175(3), p.378 - 387, 2017/07

 Times Cited Count:11 Percentile:73.37(Environmental Sciences)

The International Commission on Radiation Units and Measurements (ICRU) has been discussing to propose a new system of the operational quantities for external radiations based on protection quantities. The aim of this study is to provide a set of conversion coefficients for use in defining personal dose equivalent for individual monitoring. Fluence-to-effective dose conversion coefficients have been calculated for photons, neutrons, electrons, positrons, protons, muons, pions and helium ions for various incident angles of radiations. The data sets comprise effective dose conversion coefficients for incident angles of radiations from 0 $$^{circ}$$ to 90 $$^{circ}$$ in steps of 15$$^{circ}$$ and at 180$$^{circ}$$. Conversion coefficients for rotational, isotropic, superior hemisphere semi-isotropic and inferior hemisphere semi-isotropic irradiations are also included. The conversion coefficients are used to define the operational quantity personal dose equivalent which is being considered by ICRU and utilized for the design and calibration of dosemeters.

Journal Articles

Measurements and evaluations of air dose rates around Fukushima, 2; Meanings and features of dose quantities used in radiation protection

Saito, Kimiaki; Yamamoto, Hideaki

Radioisotopes, 63(11), p.519 - 530, 2014/11

This article aims to provide the basic meanings and features of the doses frequently used in the measurements and evaluations of environmental radiation due to the Fukushima Dai-ichi Nuclear Power Plant accident. The following doses are explained and compared: absorbed dose as basic physical quantity; effective dose and equivalent dose for judgment in radiation protection; and ambient dose equivalent $$H^{*}$$(10) and individual dose equivalent $$H$$p(10) for radiation measurements.

Journal Articles

Calculation of the effective dose and its variation from environmental gamma ray sources

Saito, Kimiaki; N.Petoussi*; Zankl, M.*

Health Physics, 74(6), p.698 - 706, 1998/06

 Times Cited Count:46 Percentile:94.84(Environmental Sciences)

no abstracts in English

Journal Articles

Dose analysis in safety and site evaluation for the JMTR core conversion to LEU fuel

Tsuchida, Noboru; ; ; ; ; Saito, Minoru;

ANL/RERTR/TM-19, CONF-9209266, 0, p.259 - 266, 1995/00

no abstracts in English

Journal Articles

Angular dependence of organ doses and effective dose for external photon irradiation

Yamaguchi, Yasuhiro; Yoshizawa, Michio

Proc. of the Int. Radiation Protection Association,Vol. 2, p.1237 - 1240, 1992/00

no abstracts in English

Journal Articles

Organ doses as a function of body weight for environmental gamma rays

Saito, Kimiaki; N.Petoussi*; Zankl, M.*; R.Veit*; P.Jacob*; G.Drexler*

Journal of Nuclear Science and Technology, 28(7), p.627 - 641, 1991/07

no abstracts in English

Journal Articles

Analytical method and result of off-site exposure during normal operation of High Temperature Engineering Test Reactor(HTTR)

Sawa, Kazuhiro; *; Saito, Shinzo

Energy, 16(1-2), p.459 - 470, 1991/00

 Times Cited Count:9 Percentile:69.62(Thermodynamics)

no abstracts in English

Journal Articles

External doses due to terrestrial gamma rays on the snow cover

Saito, Kimiaki

Radiation Protection Dosimetry, 35(1), p.31 - 39, 1991/00

 Times Cited Count:8 Percentile:66.17(Environmental Sciences)

no abstracts in English

Journal Articles

Examination on conversion factors to estimate effective dose equivarent from absorbed dose in air for natural gamma radiations

Moriuchi, Shigeru; Tsutsumi, Masahiro; Saito, Kimiaki

Hoken Butsuri, 25, p.121 - 128, 1990/00

no abstracts in English

Journal Articles

Problem and measures for the new radiation quantities in the position of radiation protection

Minami, Kentaro; Murakami, Hiroyuki;

Hoshasen, 13(3), p.18 - 28, 1987/00

no abstracts in English

11 (Records 1-11 displayed on this page)
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