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C monitoring in RI facilitiesUeno, Yumi; Takahashi, Teruhiko; Sawahata, Katsunori; Kikuchi, Masamitsu; Tsunoda, Masahiko
no journal, ,
no abstracts in English
calibration field in the range of 
Sv/h and its application to calibration of dosimetersYoshitomi, Hiroshi; Nishino, Sho; Kawai, Keiichi; Umino, Kazushige; Kowatari, Munehiko; Tanimura, Yoshihiko; Yoshizawa, Michio
no journal, ,
no abstracts in English
-rays using a TES microcalorimeter with a thick Sn absorber; Spectrum analysis with Monte Carlo simulationYasumune, Takashi; Takasaki, Koji; Onishi, Takashi; Koyama, Shinichi; Hatakeyama, Shuichi*; Ono, Masashi*; Takahashi, Hiroyuki*
no journal, ,
Superconducting transition edge sensors (TES) have been developed for identification of plutonium and minor actinides. We have developed TES with a thick Sn absorber to detect X-rays and -rays. Energy dispersive spectroscopy measurements of an actinide source were conducted by the TES with a Sn absorber to demonstrate the potential for hard X-ray and -ray detection. We also performed a Monte Carlo simulation using EGS5 code in order to analyze the obtained results.
Kinase, Sakae; Sato, Satoshi; Saito, Kimiaki; Ryufuku, Susumu*; Sakamoto, Ryuichi*
no journal, ,
no abstracts in English
Sato, Satoshi; Kinase, Sakae; Saito, Kimiaki; Sakamoto, Ryuichi*; Nemoto, Hisashi*; Ryufuku, Susumu*
no journal, ,
no abstracts in English
Nakagawa, Masahiro; Kato, Takuya; Nojima, Shun; Sakai, Toshiya; Shishido, Nobuhito; Umehara, Takashi
no journal, ,
Mask fitting tester "MT-03" is widespread as educational equipment in medical institution and industrial organization. However, there are few examples introduced in order to check the protection performance of purifying respirators in nuclear facilities. In this study, we compared protection factors obtained by MT-03 and those obtained by Mask-man test apparatus "MT-100N". As a result, although the change of measurement result is larger and measured value is higher than that of MT-100N, it was found that protection performance can be checked appropriately.
-rays emitted from radioactive cesium deposited in environmentTakahashi, Fumiaki
no journal, ,
no abstracts in English
Sato, Kaoru; Takahashi, Fumiaki; Endo, Akira; Ono, Koji*; Hasegawa, Takayuki*; Katsunuma, Yasushi*; Yoshitake, Takayasu*; Ban, Nobuhiko*; Kai, Michiaki*
no journal, ,
no abstracts in English
I concentration in soil within 10 km radius from the Tokai Reprocessing Plant using accelerator mass spectrometryKokubun, Yuji; Yokoyama, Hiroya; Fujita, Hiroki; Nakano, Masanao; Sumiya, Shuichi
no journal, ,
The horizontal distribution of I in soil within 10km radius from Tokai Reprocessing Plant (TRP) as well as the vertical distribution at 2 km southwest from TRP were measured using the Accelerator Mass Spectrometry (AMS) method. As a result, the small amounts of I were observed due to the atmospheric discharge from TRP. It was good agreement with the predicted concentrations in safety assessment. The validity of the diffusion calculation was confirmed in the 10 km radius. Moreover, the results of vertical distribution of I show equivalent value to be a churning layer and decreased rapidly in the depth more than it.
Nakagawa, Takahiro; Takada, Chie; Yamazaki, Takumi; Momose, Takumaro
no journal, ,
no abstracts in English
Kanazawa, Nobuyuki; Nakamura, Keisuke; Miyauchi, Toru; Chikazawa, Tatsuya*; Kurosawa, Hideaki*; Shiba, Kozo
no journal, ,
no abstracts in English
Takada, Chie; Nakagawa, Takahiro; Yamazaki, Takumi; Ishikawa, Hisashi; Momose, Takumaro
no journal, ,
A special monitoring was performed for the persons working at Central Building in Tokai Reprocessing Plant in September, 2013. One person of the monitored subjects was estimated that he took a tiny amount of radioactive materials accidentally.
Yoshida, Tadayoshi; Tsujimura, Norio; Yashima, Hiroshi*
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no abstracts in English
Cf neutronsYoshida, Tadayoshi; Tsujimura, Norio
no journal, ,
no abstracts in English
-ray dose in Tokai Reprocessing PlantShioya, Satoshi; Sakuyama, Mitsuhiro*; Kashimura, Katsuya*; Kawasaki, Takashi; Endo, Kuniaki; Ozeki, Kiyoshi
no journal, ,
no abstracts in English
Nakamura, Keisuke; Maeda, Makoto*; Aoki, Katsunori; Yasumune, Takashi; Takasaki, Koji; Maehata, Keisuke*; Iyomoto, Naoko*; Ishibashi, Kenji*; Mitsuda, Kazuhisa*; Tanaka, Keiichi*
no journal, ,
no abstracts in English
Nagaoka, Mika; Fujita, Hiroki; Nakano, Masanao; Watanabe, Hitoshi; Sumiya, Shuichi
no journal, ,
no abstracts in English
Ayame, Junko; Sugiyama, Kenji; Takashita, Hirofumi
no journal, ,
JAEA nuclear fuel cycle engineering laboratory, surveillance study and practice about risk communication have been performed from 2001. After the Fukushima Nuclear Power Plant disaster is carrying out the briefing session (study meeting concerning "radiation in Fukushima Prefecture at "the meeting which replies to the question about radiation", and Ibaraki Prefecture" (the following, study meeting)) about the radiation which thought bidirection as important for Fukushima residents and Ibaraki residents based on the request from various organizations taking advantage of the experience. Here, while introducing the outline and questionnaire result of a study meeting which were performed in Ibaraki, the bidirectional dialog activities "FRIENDLY talk" before the Fukushima Nuclear Power Plant disaster are compared, and the opinion tendency of the Ibaraki residents before and behind an accident is considered.
Nojima, Shun; Sakai, Jun; Nakagawa, Masahiro; Shirato, Yoshihiro; Aoyagi, Hiroyuki; Otsuka, Yoshikazu; Sakai, Toshiya; Shishido, Nobuhito; Umehara, Takashi
no journal, ,
no abstracts in English
Tsujimura, Norio; Yoshida, Tadayoshi
no journal, ,
no abstracts in English