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JAEA Reports

Annual report on the services for chemical analysis and scientific glassblowing in the fiscal year 2001 and 2002

Ito, Mitsuo; Obara, Kazuhiro; Toida, Yukio*; Suzuki, Daisuke; Gunji, Katsubumi*; Watanabe, Kazuo

JAERI-Review 2004-007, 65 Pages, 2004/03

JAERI-Review-2004-007.pdf:5.53MB

no abstracts in English

JAEA Reports

Establishment of a clean chemistry laboratory at JAERI; Clean Laboratory for Environmental Analysis and Research (CLEAR)

Hanzawa, Yukiko; Magara, Masaaki; Watanabe, Kazuo; Esaka, Fumitaka; Miyamoto, Yutaka; Yasuda, Kenichiro; Gunji, Katsubumi*; Yamamoto, Yoichi; Takahashi, Tsukasa; Sakurai, Satoshi; et al.

JAERI-Tech 2002-103, 141 Pages, 2003/02

JAERI-Tech-2002-103.pdf:10.38MB

The JAERI has established a facility with a cleanroom: the Clean Laboratory for Environmental Analysis and Research (CLEAR). This report is an overview of the design, construction and performance evaluation of the CLEAR in the initial stage of the laboratory operation in June 2001. The CLEAR is a facility to be used for ultra trace analyses of nuclear materials in environmental samples for the safeguards, for the CTBT verification and for researches on environmental sciences. The CLEAR meets double requirements of a cleanroom and for handling of nuclear materials. Much attention was paid to the construction materials of the cleanroom for trace analysis of metal elements using corrosive acids. The air conditioning and purification system, experimental equipment, utilities and safety systems are also demonstrated. The potential contamination from the completed cleanroom atmosphere during the analytical procedure was evaluated. It can be concluded that the CLEAR has provided a suitable condition for reliable analysis of ultra trace amounts of nuclear materials in environmental samples.

Journal Articles

Establishment of a clean laboratory for ultra trace analysis of nuclear materials in safeguards environmental samples

Hanzawa, Yukiko; Magara, Masaaki; Watanabe, Kazuo; Esaka, Fumitaka; Miyamoto, Yutaka; Yasuda, Kenichiro; Gunji, Katsubumi*; Sakurai, Satoshi; Takano, Seinojo*; Usuda, Shigekazu; et al.

Journal of Nuclear Science and Technology, 40(1), p.49 - 56, 2003/01

 Times Cited Count:4 Percentile:31.71(Nuclear Science & Technology)

The JAERI has established a cleanroom facility with cleanliness of ISO Class 5: the Clean Laboratory for Environmental Analysis and Research (CLEAR). It was designed to be used for the analysis of nuclear materials in environmental samples for the safeguards, the Comprehensive Nuclear-Test-Ban Treaty verification and research on environmental sciences. The CLEAR facility was designed to meet double conflicting requirements of a cleanroom and for handling of nuclear materials according to Japanese regulations, i.e., to avoid contamination from outside and to contain nuclear materials inside the facility. This facility has been intended to be used for wet chemical treatment, instrumental analysis and particle handling. A fume-hood to provide a clean work surface for handling of nuclear materials was specially designed. The performance of the cleanroom and analytical background in the laboratory are discussed. It can be concluded that the CLEAR facility enables analysis of ultra trace amounts of nuclear materials at the sub-picogram level in environmental samples.

Journal Articles

Development for ultra-trace analysis method of U and Pu in safeguards environmental samples at the clean facility

Takahashi, Masato; Magara, Masaaki; Sakurai, Satoshi; Kurosawa, Setsumi; Esaka, Fumitaka; Taguchi, Takuji; Takai, Konomi; Fukuyama, Hiroyasu; Lee, C. G.; Yasuda, Kenichiro; et al.

Dai-23-Kai Kaku Busshitsu Kanri Gakkai Nihon Shibu Nenji Taikai Rombunshu, 8 Pages, 2002/09

Based on the strengthen safeguard program of the IAEA to detect undeclared nuclear activities, the method of precise and accurate isotope ratio determination for uranium and plutonium in the environmental samples (cotton swipes) has been developed at JAERI. The samples should be treated in clean environment in order to secure the analytical reliability by eliminating external contamination from the samples containing trace amount of uranium and plutonium. Since the measurement by ICP-MS is favorable to bulk analysis from view points of analytical capacity and operation simplicity, we have studied sample preparation procedures for the trace amount of uranium and plutonium to be applied to ICP-MS. Up to the present, interfering factors involved during analytical processes and the ICP-MS measurement of uranium and plutonium were examined. As a result, uranium and plutonium isotope measurement more than 100 pg and 100 fg, respectively, became possible at JAERI clean facility. At presentation, other progress in the development will be reported.

JAEA Reports

Annual report on the services for chemical analysis and scientific glassblowing in the fiscal year 2000

Ito, Mitsuo; Obara, Kazuhiro; Toida, Yukio*; Suzuki, Daisuke; Gunji, Katsubumi*; Kato, Kaneharu; Watanabe, Kazuo

JAERI-Review 2001-045, 64 Pages, 2002/01

JAERI-Review-2001-045.pdf:9.08MB

no abstracts in English

Journal Articles

Recent status of developments in analytical methods for safeguards environmental samples; Focused on particle analysis

Esaka, Fumitaka; Magara, Masaaki; Hanzawa, Yukiko; Sakurai, Satoshi; Taguchi, Takuji; Takai, Konomi; Sakakibara, Takaaki; Kurosawa, Setsumi; Takahashi, Masato; Yasuda, Kenichiro; et al.

Dai-22-Kai Kaku Busshitsu Kanri Gakkai Nihon Shibu Nenji Taikai Rombunshu, 8 Pages, 2001/11

no abstracts in English

Journal Articles

Analysis of a uranium solution for evaluating the total number of fissions in the JCO criticality accident in Tokai-mura

Uchiyama, Gunzo; Watanabe, Kazuo; Miyauchi, Masakatsu; Togashi, Yoshihiro; Nakahara, Yoshinori; Fukaya, Hiroyuki; Inagawa, Jun; Suzuki, Daisuke; Sonoda, Takashi; Kono, Nobuaki; et al.

Journal of Radiation Research, 42(Suppl.), p.S11 - S16, 2001/10

no abstracts in English

Journal Articles

Development of trace analytical technology for nuclear materials in the clean laboratory for environmental analysis and research

Usuda, Shigekazu; Watanabe, Kazuo; Sakurai, Satoshi; Magara, Masaaki; Hanzawa, Yukiko; Esaka, Fumitaka; Miyamoto, Yutaka; Yasuda, Kenichiro; Saito, Yoko; Gunji, Katsubumi*; et al.

KEK Proceedings 2001-14, p.88 - 92, 2001/06

no abstracts in English

JAEA Reports

Annual report on the services for chemical analysis and scientific glassblowing in the fiscal year 1999

Ito, Mitsuo; Obara, Kazuhiro; Toida, Yukio*; Suzuki, Daisuke; Gunji, Katsubumi*; Kato, Kaneharu; Watanabe, Kazuo

JAERI-Review 2000-032, 58 Pages, 2001/01

JAERI-Review-2000-032.pdf:2.68MB

no abstracts in English

Journal Articles

Progress of environmental sampling program at Japan Atomic Energy Research Institute

Nishimura, Hideo; Magara, Masaaki; Hanzawa, Yukiko; Esaka, Fumitaka; Takahashi, Tsukasa; Gunji, Katsubumi; Miyamoto, Yutaka; Yasuda, Kenichiro; Tsuruta, Yasuhiro; Tsuda, Shinji; et al.

Heisei 11-Nendo Hosho Sochi Semina Koenroku Tekisuto, p.95 - 107, 2000/01

no abstracts in English

Journal Articles

Characterization of individual particles including lead by combination of SIMS and EPMA

Esaka, Fumitaka; Watanabe, Kazuo; Magara, Masaaki; Hanzawa, Yukiko; Usuda, Shigekazu; Gunji, Katsubumi; Nishimura, Hideo; Adachi, Takeo

Proceedings of 12th International Conference on Secondary Ion Mass Spectrometry (SIMS 12), p.977 - 980, 2000/00

no abstracts in English

Journal Articles

Present status of JAERI's project on the development of environmental sample analysis techniques

Usuda, Shigekazu; Adachi, Takeo; Watanabe, Kazuo; Magara, Masaaki; Hanzawa, Yukiko; Esaka, Fumitaka; Miyamoto, Yutaka; Yasuda, Kenichiro; Gunji, Hideho; Tsuruta, Yasuhiro; et al.

Proceedings of Seminar on Strengthening of Safeguards: Integrating the New and the Old, p.477 - 481, 2000/00

no abstracts in English

Journal Articles

Development programme of analytical techniques for ultra trace amounts of nuclear materials in environmental samples for safeguards-from a viewpoint of speciation technology

Hanzawa, Yukiko; Magara, Masaaki; Esaka, Fumitaka; Watanabe, Kazuo; Usuda, Shigekazu; Miyamoto, Yutaka; Gunji, Katsubumi; Yasuda, Kenichiro; Nishimura, Hideo; Adachi, Takeo

Proceedings of OECD/NEA Workshop on Evaluation of Speciation Technology, p.167 - 172, 1999/00

no abstracts in English

Journal Articles

Program to develop analytical techniques for ultra trace amounts of nuclear materials in environmental samples

Hanzawa, Yukiko; Magara, Masaaki; Esaka, Fumitaka; Watanabe, Kazuo; Usuda, Shigekazu; Gunji, Katsubumi; Yasuda, Kenichiro; Takahashi, Tsukasa; Nishimura, Hideo; Adachi, Takeo; et al.

Proceedings of the Institute of Nuclear Materials Management 40th Annual Meeting (CD-ROM), 7 Pages, 1999/00

no abstracts in English

JAEA Reports

Research on radioactivity in marine off Rokkasho village of Aomori prefecture

Yamamoto, Tadatoshi; Gunji, Katsubumi; *

JAERI-Research 98-072, 21 Pages, 1998/12

JAERI-Research-98-072.pdf:1.19MB

no abstracts in English

Journal Articles

Comparison of calculated alues with measured values on the amount of TRU and FP nuclides accumulated in gadolinium bearing PWR spent fuels

Adachi, Takeo; Nakahara, Yoshinori; Kono, Nobuaki; Gunji, Katsubumi; ; ; ; Kato, Kaneharu; Tachikawa, Enzo; *; et al.

Journal of Nuclear Science and Technology, 31(10), p.1119 - 1129, 1994/10

 Times Cited Count:8 Percentile:60.33(Nuclear Science & Technology)

no abstracts in English

JAEA Reports

Pre-pulse irradiation examination, NSRR pulse irradiation and post-pulse irradiation examination of MH-2 fuel rod

Yanagisawa, Kazuaki; Katanishi, Shoji; *; Sasajima, Hideo; ; Horiki, Oichiro; Mimura, Hideaki; ; ; ; et al.

JAERI-M 92-015, 211 Pages, 1992/02

JAERI-M-92-015.pdf:8.77MB

no abstracts in English

Journal Articles

Sorption behavior and inventory of alpha-emitters on the surfaces of spent nuclear fuel cladding

Sato, Tadashi; Hirabayashi, Takakuni; Sagawa, Chiaki; Kono, Nobuaki; Gunji, Katsubumi; Adachi, Takeo

Journal of Radioanalytical and Nuclear Chemistry, 163(2), p.235 - 244, 1992/00

 Times Cited Count:0 Percentile:0.01(Chemistry, Analytical)

no abstracts in English

Journal Articles

Dissolution study of spent PWR fuel: Dissolution behavior and chemical properties of insoluble residues

Adachi, Takeo; ; *; ; *; Takeishi, Hideyo; Gunji, Katsubumi; Kimura, Takaumi; ; Nakahara, Yoshinori; et al.

Journal of Nuclear Materials, 174, p.60 - 71, 1990/00

 Times Cited Count:40 Percentile:94.49(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Determination of fission-product ruthenium by isotope dilution mass spectrometry

Gunji, Katsubumi; Yoshida, Zenko; Adachi, Takeo;

Journal of Radioanalytical and Nuclear Chemistry, Letters, 118(3), p.225 - 233, 1987/00

no abstracts in English

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