Survey and countermeasures on radiocesium inflow into a laboratory building for radioactivity analysis

Kurita, Yoshiyuki; Saegusa, Jun; Maeda, Satoshi

In 2012, JAEA has established a laboratory in Fukushima-city to implement radioactivity analysis of environmental samples. Key nuclides measured in this laboratory are $^{134}$ Cs and $^{137}$ Cs (radiocesium). For the purpose, situation of radiocesium inflow into the laboratory building and its effects were investigated based on high-resolution gamma-spectrometry with germanium detectors. As a result, the surface density of radiocesium in the laboratory was found to be far below the minimum detectable activities of survey instruments routinely used for radiation control purposes.

Language	:	Japanese
Journal	:	Nihon Hoshasen Anzen Kanri Gakkai-Shi
Volume	:	15
Number	:	2
Pages	:	p.180 - 185
Publication Year/Month	:	2016/11
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Paper URL	:	http://doi.org/10.11269/jjrsm.15.180
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Keywords	:	Radiocesium; Fukushima Daiichi Nuclear Power Station; Radioactivity analysis; Radiation monitoring; Adhesive mat; Fukushima Daiichi Nuclear Power Station Accident; 福島第一原子力発電所事故
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Registration No. : AA20151046
JAEA Abstracts No. : 45000182
Paper Submission No. : 18509

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