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JAEA Reports

Integrity evaluation of removable lid type shielded container

Uesaka, Takahiro; Kozawa, Masachiyo; Matsumoto, Junko; Endo, Masayuki; Kinoshita, Junichi; Suzuki, Takeshi; Suzuki, Hisao; Morishita, Satoru; Sakamoto, Yu

JAEA-Technology 2012-015, 29 Pages, 2012/06

JAEA-Technology-2012-015.pdf:3.22MB

In Japan Atomic Energy Agency Nuclear Science Research Institute waste treatment building No.2 treat intermediate-level solid waste. Solid wastes are reduced in volume by compaction. They are then canned in stainless can, which are subsequently put in 200-liter concrete-lined drums or 1-m$$^{3}$$ concrete containers, filled with concrete. To prepare for disposal in future, be able to make fit with the technical standard of waste package, we were asked to change the lid type shielded container. Therefore due to the change of lid type shielded container, we confirmed integrity of it with evaluation of close volt by drop analysis, evaluation of shielding, and drop test with a prototype model.

Journal Articles

Field tests on migration of TRU-nuclide, 1; General introduction

Ogawa, Hiromichi; Tanaka, Tadao; Mukai, Masayuki; Maeda, Toshikatsu; Munakata, Masahiro; Matsumoto, Junko; Bamba, Tsunetaka; Li, S.*; Wang, Z.*; Li, Z.*; et al.

Nihon Genshiryoku Gakkai Wabun Rombunshi, 2(3), p.332 - 335, 2003/09

The filed migration test using TRU nuclide was carried out as a cooperative research project between JAERI and CIRP (China Institute for Radiation Protection). This report introduced the outline of the filed migration test and described the outline of the special number of Field Test on Migration of TRU-nuclide and main results as a summary report.

Journal Articles

Field tests on migration of TRU-nuclide, 2; Migration test for engineered barrier materials in aerated soil

Maeda, Toshikatsu; Tanaka, Tadao; Mukai, Masayuki; Ogawa, Hiromichi; Yamaguchi, Tetsuji; Munakata, Masahiro; Matsumoto, Junko; Kozai, Naofumi; Bamba, Tsunetaka; Fan, Z.*; et al.

Nihon Genshiryoku Gakkai Wabun Rombunshi, 2(3), p.336 - 341, 2003/09

no abstracts in English

Journal Articles

Field tests on migration of TRU-nuclide, 3; Migration test of radionuclide in aerated soil layer

Mukai, Masayuki; Tanaka, Tadao; Maeda, Toshikatsu; Ogawa, Hiromichi; Matsumoto, Junko; Munakata, Masahiro; Zhao, Y.*; Guo, Z.*; Ni, S.*; Li, S.*

Nihon Genshiryoku Gakkai Wabun Rombunshi, 2(3), p.342 - 349, 2003/09

Evaluation of radionuclide migration in geologic media is of great importance in safety assessment for shallow land disposal specially for TRU nuclides because of inadequate data based on field test. As a cooperative research between JAERI and CIRP, a field test of radionuclide migration was conducted under natural condition using Sr-90, Np-237 and Pu-238 to obtain migration data of the radionuclides in actual aerated layer under natural rainfall condition. Values of input parameters to an existing evaluation equation of nuclide migration were determined on the basis of the results of laboratory experiments of batch and column methods and field investigation. Migration distribution of the radionuclides calculated with the determined values showed reasonable agreement with the measured distribution of the field test. This confirmed an applicability of the evaluation equation for radionuclide migration to actual aerated layer under natural condition.

Journal Articles

Migration mechanisms of $$^{237}$$Np and $$^{241}$$Am through loess media

Tanaka, Tadao; Mukai, Masayuki; Maeda, Toshikatsu; Matsumoto, Junko; Ogawa, Hiromichi; Li, Z.*; Wang, X.*; Fan, Z.*; Guo, L.*; Liu, C.*

Journal of Radioanalytical and Nuclear Chemistry, 256(2), p.205 - 211, 2003/05

 Times Cited Count:3 Percentile:26.72(Chemistry, Analytical)

Migration experiments of $$^{237}$$Np(V) and $$^{241}$$Am(III) have been performed using a column system, to investigate migration behavior of Np and Am through a column packed with loess, taken from Shanxi, China. Adsorption mechanisms of Np and Am on the loess were examined by a chemical extraction method. In the case of the Np, most of Np adsorbed on the influent edge of the column. The Np adsorbed on the loess was mainly controlled by surface complexation. However, the migration of Np in the loess media could be roughly evaluated by using the distribution coefficient. In the case of the Am, particulate Am species was formed in the influent solution and moved in the column. The Am adsorbed on the loess was controlled by irreversible reactions. The migration behavior of particulate Am in the loess media could be expressed by the filtration theory.

Journal Articles

The Suppression effect of natural barrier for the radionuclide migration under the practice environment

Tanaka, Tadao; Mukai, Masayuki; Maeda, Toshikatsu; Matsumoto, Junko; Ogawa, Hiromichi; Munakata, Masahiro; Kimura, Hideo; Bamba, Tsunetaka; Fujine, Sachio

Genshiryoku eye, 49(2), p.76 - 79, 2003/02

no abstracts in English

Journal Articles

Migration behavior of stable and radioactive strontium in natural aquifer

Tanaka, Tadao; Mukai, Masayuki; Maeda, Toshikatsu; Munakata, Masahiro; Matsumoto, Junko; Ogawa, Hiromichi; Bamba, Tsunetaka*; Wang, Z.*; Yang, Y.*; Zhao, Y.*

Proceedings of International Symposium on Radioecology and Environmental Dosimetry, p.179 - 184, 2003/00

Migration behaviors of stable strontium element and radioactive nuclide strontium 90 in natural aquifer were studied by a field test, which was performed in the aquifer loess zone at 30 m under the ground surface of the field test site of China Institute for Radiation Protection. The migration behavior of stable strontium was a little different from that of $$^{90}$$Sr. The difference was evaluated by applying the distribution coefficient considering Sr and coexistent ion concentrations. Migration behavior of radionuclide in natural environment has been generally demonstrated on field tests without radioactive tracers and/or large-scale column tests with radioactive tracers. Such tests seem to be valuable to improve reliability of the migratory evaluation.

JAEA Reports

Adsorption mechanisms and models of $$^{85}$$Sr, $$^{237}$$Np, $$^{238}$$Pu and $$^{241}$$Am in loess media (Joint research)

Tanaka, Tadao; Mukai, Masayuki; Maeda, Toshikatsu; Matsumoto, Junko; Ogawa, Hiromichi; Li, S.*; Wang, Z.*; Wang, J.*; Guo, Z.*; Zhao, Y.*

JAERI-Research 2002-034, 20 Pages, 2002/12

JAERI-Research-2002-034.pdf:1.1MB

Adsorption mechanisms and models of $$^{85}$$Sr(II), $$^{237}$$Np(V), $$^{238}$$Pu(IV) and $$^{241}$$Am(III) on the loess were investigated from their adsorption and desorption properties. The distribution coefficient of $$^{85}$$Sr and $$^{237}$$Np was 2 - 3 orders of magnitude smaller than that of $$^{238}$$Pu and $$^{241}$$Am. The adsorption of $$^{85}$$Sr and $$^{237}$$Np was mainly controlled by the ion exchange reaction. On the other hand, the adsorption of $$^{238}$$Pu and $$^{241}$$Am was mostly controlled by the selective chemical reactions with Fe and Mn oxyhydroxide/oxide and humic substances. On the basis of the experimental results, several types of adsorption models of the radionuclides, considering elemental concentrations, adsorption mechanisms and kinetics, were proposed for setting up the analytical systems of radionuclide migration in the loess media.

Journal Articles

An Opening in mortar produced from gas evolution of aluminium

Hashizume, Shuji*; Matsumoto, Junko; Bamba, Tsunetaka

Genshiryoku Bakkuendo Kenkyu, 6(1), p.101 - 106, 1999/12

no abstracts in English

Journal Articles

Sorption behavior of organic carbon-14 onto cementitious materials

Matsumoto, Junko; Bamba, Tsunetaka

Proc. of 7th Int. Conf. on Radioactive Waste Management and Environmental Remediation (ICEM'99)(CD-ROM), 5 Pages, 1999/00

no abstracts in English

Journal Articles

The Mix proportions of mortar raw materials for solidified dry low-level radioactive wastes

Hashizume, Shuji; ; Matsumoto, Junko; Bamba, Tsunetaka

Genshiryoku Bakkuendo Kenkyu, 5(1), p.37 - 44, 1998/08

no abstracts in English

Journal Articles

Effect of direct contact with iron on gas evolution behavior of aluminum

Hashizume, Shuji; Matsumoto, Junko; Bamba, Tsunetaka

Genshiryoku Bakkuendo Kenkyu, 5(1), p.45 - 49, 1998/08

no abstracts in English

Journal Articles

Effects of environmental factor on gas evolution behavior from Al in simulating mortar environments

Hashizume, Shuji; Matsumoto, Junko; Bamba, Tsunetaka

Zairyo To Kankyo, 47(10), p.638 - 644, 1998/00

no abstracts in English

JAEA Reports

Gas evolution behavior of aluminum in mortar

Hashizume, Shuji; Matsumoto, Junko; Bamba, Tsunetaka

JAERI-Review 96-013, 25 Pages, 1996/10

JAERI-Review-96-013.pdf:1.06MB

no abstracts in English

Journal Articles

A Study of specific sorption of neptunium(V) on smectite in low pH solution

Kozai, Naofumi; Onuki, Toshihiko; Matsumoto, Junko; Bamba, Tsunetaka; *

Radiochimica Acta, 75(3), p.149 - 158, 1996/00

no abstracts in English

Journal Articles

Adsorption of carbon-14 on mortar

Matsumoto, Junko; Bamba, Tsunetaka; Muraoka, Susumu

Materials Research Society Symposium Proceedings, Vol.353, 0, p.1029 - 1035, 1995/00

no abstracts in English

Journal Articles

Leaching behavior of carbon-14 contained in portland cement

Bamba, Tsunetaka; Matsumoto, Junko; Muraoka, Susumu

Cement Concrete Research, 22, p.381 - 386, 1992/00

 Times Cited Count:0 Percentile:0.1(Construction & Building Technology)

no abstracts in English

17 (Records 1-17 displayed on this page)
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