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Airborne radiation monitoring using a manned helicopter

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Abstract

The Great East Japan Earthquake that occurred on 11 March 2011 generated a series of large tsunami waves that caused serious damage to the Fukushima Dai-ichi Nuclear Power Station, following which a large amount of radioactive material was discharged from the nuclear power plant into the environment. Airborne radiation measurements using a manned helicopter were applied to measure the radiation distribution immediately after accident as technique to quickly measure the radiation distribution over a wide area. In Japan, this technique was researched and developed in the 1980s. However, this technique and system were not applied immediately after the accident because standardization of analysis was not established and the Japanese system became deteriorated. This technique is important for post-accident studies at a nuclear facility. We summarized the methods of the airborne radiation measurement using a manned helicopter. In addition, measurement results of the dose rate distribution at the Fukushima Dai-ichi Nuclear Power Station are given in this paper.

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APA

Sanada, Y., Ishizaki, A., Nishizawa, Y., & Urabe, Y. (2017). Airborne radiation monitoring using a manned helicopter. Bunseki Kagaku, 66(3), 149–162. https://doi.org/10.2116/bunsekikagaku.66.149

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