Measurement of ambient dose equivalent rates by walk survey around Fukushima Dai-ichi Nuclear Power Plant using KURAMA-II until 2016

Correction Coefficients for Measuring the Ambient Dose Equivalent Rate of Neutrons

ANRI ◽

10.37414/2075-1338-2021-107-4-32-40 ◽

2021 ◽

Vol 0 (4) ◽

pp. 32-40

Author(s):

Alexander Alexeev ◽

Vladimir Pikalov ◽

Pavel Alexeev

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Dose Equivalent ◽

Equivalent Rate ◽

Ambient Dose Equivalent ◽

Ambient Dose

Calculations of the response for the most widely used neutron dosimeters at the Russian nuclear power plant (NPP) have been performed. It is shown that in some cases it is necessary to introduce a correction for the measured value of the ambient dose equivalent rate (AEDR). The experimentally tested values of the correction for measuring AEDR in the containment rooms of NPP with VVER-1200 are given.

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MEASUREMENT OF THE AMBIENT DOSE EQUIVALENT RATE OF NEUTRONS AT NUCLEAR POWER PLANTS

EurasianUnionScientists ◽

10.31618/esu.2413-9335.2021.1.85.1324 ◽

2021 ◽

pp. 14-20

Author(s):

A. Alexeev ◽

P. Alexeev

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Power Plants ◽

Nuclear Power Plants ◽

Dose Equivalent ◽

Equivalent Rate ◽

Ambient Dose Equivalent ◽

Ambient Dose

Calculations of the neutron response for the most widely used neutron dosimeters at the Russian nuclear power plant (NPP) have been performed. It is shown that in some cases it is necessary to introduce a correction for the measured value of the ambient dose equivalent rate (AEDR). The experimentally tested values of the correction for measuring AEDR in the containment rooms of NPP with VVER-1200 are given.

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Radiation effects on wild medaka around Fukushima Dai-ichi Nuclear Power Plant assessed by micronucleus assay

Journal of Radiation Research ◽

10.1093/jrr/rraa116 ◽

2020 ◽

Vol 62 (1) ◽

pp. 79-85

Author(s):

Kouichi Maruyama ◽

Bing Wang ◽

Kazutaka Doi ◽

Koji Ishibashi ◽

San’ei Ichikawa ◽

...

Keyword(s):

Power Plant ◽

Nuclear Power Plant ◽

Nuclear Power ◽

Radiation Effects ◽

Micronucleus Assay ◽

Dose Equivalent ◽

Equivalent Rate ◽

Significant Difference ◽

Ambient Dose Equivalent ◽

Ambient Dose

Abstract Since the Fukushima Dai-ichi Nuclear Power Plant (F1-NPP) accident in 2011, radiation effects on wildlife in the contaminated areas have been a major concern. The outskirts of the F1-NPP are mainly rural areas, where many rice fields, streams and reservoirs are located. We searched for wild medaka (small aquarium fish) around the F1-NPP and found two wild medaka habitats (S1 and S2). S1 is a stream located 4 km from the F1-NPP, where the ambient dose equivalent rate was 0.4–0.9 μSv/h (2013–14), and S2 is a reservoir located 7.5 km from the F1-NPP, where the ambient dose equivalent rate was 9.8–22 μSv/h (2013–14 and 2017–18). Dosimeters were placed for one day at the locations where the medaka were captured, and the absorbed dose rates were estimated. Radiation effects on wild medaka were examined using micronucleus assay between 2013 and 2018. No significant difference in frequency of micronucleated gill cells was observed among the wild medaka from S1, S2 and our cultivated medaka that were used as a control.

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