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Journal Articles

Study on chemisorption model of cesium hydroxide onto stainless steel type 304

Nakajima, Kunihisa; Nishioka, Shunichiro; Suzuki, Eriko; Osaka, Masahiko

Proceedings of 27th International Conference on Nuclear Engineering (ICONE-27) (Internet), 8 Pages, 2019/05

Cesium chemisorption models were developed for estimation of amount of cesium chemisorbed onto stainless steel type 304 (SS304) during light water reactor severe accident. However, existing chemisorption models cannot accurately reproduce experimental results. In this study, a modified cesium chemisorption model was constructed based on a penetration theory for gas-liquid mass transfer with chemical reaction and was able to adequately describe effects on concentration of cesium hydroxide in gaseous phase and silicon content in SS304. It was found that the modified model can more accurately reproduce the experimental data than the existing model.

Journal Articles

Environmental research on uranium at the Ningyo-Toge Environmental Engineering Center, JAEA

Sato, Kazuhiko; Yagi, Naoto; Nakagiri, Toshio

Proceedings of 27th International Conference on Nuclear Engineering (ICONE-27) (Internet), 6 Pages, 2019/05

no abstracts in English

JAEA Reports

Diffusion experiment using block sample of the Toki granite

Hama, Katsuhiro; Iwasaki, Riyo*; Morikawa, Keita*

JAEA-Technology 2017-015, 45 Pages, 2017/07

JAEA-Technology-2017-015.pdf:16.57MB

Tono Geoscience Center of Japan Atomic Energy Agency has been carrying out the Mizunami Underground Research Laboratory Project. The goal of mass transport study is to obtain a better understanding of mass transport phenomena in the geological environment as well as to develop technologies for measurement of the mass transport parameters, model construction, numerical analysis and validation of those technologies. This experiment was planned to understand the influence of the microscopic structure in the rock mass on the mass transport property. The diffusion experiment using rock sample was carried out. The macroscopic and microscopic observations were carried out to understand the distribution of tracer (uranine) after the diffusion experiment. The uranine was observed in the plagioclase, in the grain boundary and in the microfracture in the mineral grains. These results suggested that distribution of mineral and of microfracture could affect the diffusion property of uranine.

JAEA Reports

Data acquisition of mass transport parameters

Iwasaki, Riyo*; Hama, Katsuhiro; Morikawa, Keita*; Hosoya, Shinichi*

JAEA-Technology 2016-037, 62 Pages, 2017/02

JAEA-Technology-2016-037.pdf:8.69MB

Mass transport study is mainly performed as part of Phase III in the Mizunami Underground Research Laboratory Project. In Phase III, the goal of mass transport study is to obtain a better understanding of mass transport phenomena in the geological environment as well as to develop technologies for measurement of the mass transport parameters, model construction, numerical analysis and validation of those technologies. This study was planned to understand the influence of the geological characteristics of fracture on the mass transport parameters.

JAEA Reports

Evaluation of mass transport property using natural Uranium-series and Thorium-series nuclides in the Toki Granite

Hama, Katsuhiro

JAEA-Data/Code 2016-006, 23 Pages, 2016/07

JAEA-Data-Code-2016-006.pdf:1.6MB

The Mizunami Underground Research Laboratory project is being pursued by the Japan Atomic Energy Agency to enhance the reliability of relevant disposal technologies through investigations of the deep geological environment within the host crystalline rock at Mizunami City in Gifu Prefecture, central Japan. The project proceeds in three overlapping phases, Surface-based investigation Phase, Construction Phase and Operation Phase. The MIU Project has been ongoing the Phase III. As a part of the Phase III investigation, evaluation of mass transport property using natural Uranium-series and Thorium-series nuclides has been carried out. In this report, the compilation of existing data and preliminary evaluation was carried out.

JAEA Reports

Present status and future subjects of the analytical studies related with application of charged particles and RI to materials science and biotechnology

Working Group in the Advisory Committee of the Analytical Studies for Application of Charged Particl

JAERI-Review 2003-008, 42 Pages, 2003/03

JAERI-Review-2003-008.pdf:3.12MB

The position in the research field of radiation application of "Theoretical Analysis Group for Radiation Application" which will be set up within fiscal 2003, and the relation between the research that this analytical group will advance in future and the analytical research made so far at JAERI Takasaki are summarized. First, the theoretical analysis group for radiation application extracts only the core element from the analysis of reactive process of charged particles in the materials and from the irradiation effect, and then constructs the simplified model. Second, the validity of the constructed model is verified by advancing the theoretical analysis based on the model, and the calculated result is fed back to the experiment, and then the verification is carried out. Finally, the general-purpose theorization will be conducted by generalizing and universalizing the obtained model concerning the specific system. The obtained outcomes will be applied to other systems, and, will consequently, contribute to the promotion of new technological development.

JAEA Reports

The Planning of future research program of underground laboratories in overseas

*; Tanai, Kenji; *

JNC-TN8420 2001-007, 86 Pages, 2002/02

JNC-TN8420-2001-007.pdf:6.04MB

The objectives of this study is to identify the research issues, which are to be conducted in the future underground research laboratory, about operation and logistics systems for the planning of future research and development program. The research programs and experiments,etc. were investigated for the geological disposal projects in overseas sedimentary rocks and coastal geological environments aiming to reflect in the future underground research facility plan in Japan. In the investigation, information on the engineered-barrier performance, design and construction of underground facilities, tunnel support, transportation and emplacement, and backfilling technology, etc. were collected. Based on these informations, the purpose, the content, and the result of each investigations and tests were arranged. The strategy and the aim in the entire underground research facility, and the flow of investigations and tests, etc. were also arranged from the purpose, the relations and the sequence of each investigation and experiment, and the usage of results, etc.

JAEA Reports

None

; ; ; Saito, Hiroshi;

JNC-TN7410 2000-004, 16 Pages, 2000/04

JNC-TN7410-2000-004.pdf:0.5MB

JAEA Reports

None

Koide, Kaoru; ; ; ; ; Saito, Hiroshi; Takeuchi, Shinji

JNC-TN7410 2000-001, 56 Pages, 2000/04

JNC-TN7410-2000-001.pdf:2.6MB

JAEA Reports

None

; ; Shimizu, Kazuhiko; Miyahara, Kaname; ; Hasegawa, Hiroshi; Makino, Hitoshi

JNC-TN1400 99-007, 497 Pages, 1999/04

JNC-TN1400-99-007.pdf:26.32MB

None

Journal Articles

Isotope exchange reactions on ceramic breeder materials and their effect on tritium inventory

Nishikawa, Masabumi*; *; Kawamura, Yoshinori; Nishi, Masataka

JAERI-Conf 98-006, p.170 - 182, 1998/03

no abstracts in English

JAEA Reports

None

*

PNC-TJ1222 98-007, 135 Pages, 1998/02

PNC-TJ1222-98-007.pdf:3.9MB

None

Journal Articles

Isotope exchange reaction in Li$$_{2}$$ZrO$$_{3}$$ packed bed

Kawamura, Yoshinori; Enoeda, Mikio; Okuno, Kenji

Fusion Engineering and Design, 39-40, p.713 - 721, 1998/00

 Times Cited Count:7 Percentile:44.29(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Study on hydrogen permeation through high-temperature tube in the HTTR heat utilization system

Takeda, Tetsuaki; Iwatsuki, Jin*; Nishihara, Tetsuo

Proc. of ICONE-6, p.392 - 393, 1998/00

no abstracts in English

JAEA Reports

None

PNC-TN1430 97-004, 85 Pages, 1997/08

PNC-TN1430-97-004.pdf:3.44MB

no abstracts in English

JAEA Reports

None

PNC-TN1000 97-003, 55 Pages, 1997/03

PNC-TN1000-97-003.pdf:2.0MB

no abstracts in English

JAEA Reports

None

*

PNC-TJ1222 97-008, 56 Pages, 1997/03

PNC-TJ1222-97-008.pdf:2.82MB

None

JAEA Reports

None

*

PNC-TJ1222 97-007, 97 Pages, 1997/03

PNC-TJ1222-97-007.pdf:3.55MB

None

JAEA Reports

None

*

PNC-TJ1222 97-002, 112 Pages, 1997/03

PNC-TJ1222-97-002.pdf:3.25MB

None

JAEA Reports

None

; Hasegawa, Hiroshi

PNC-TN1410 97-016, 21 Pages, 1996/11

PNC-TN1410-97-016.pdf:3.96MB

no abstracts in English

61 (Records 1-20 displayed on this page)