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Journal Articles

A Study of excavation damaged zone induced around the modeled disposal pit in Horonobe Underground Research Center

Aoyagi, Kazuhei; Ishii, Eiichi; Nakayama, Masashi; Fujita, Tomo

Nippon Zairyo Gakkai Dai-65-Ki Tsujo Sokai, Gakujutsu Koenkai Rombunshu (USB Flash Drive), p.19 - 20, 2016/05

no abstracts in English

Journal Articles

Study on dissolution behavior of molten solidified waste

Mizuno, Tsuyoshi*; Maeda, Toshikatsu; Bamba, Tsunetaka*

JAERI-Conf 2005-007, p.225 - 229, 2005/08

no abstracts in English

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

Study on the barrier performance of molten solidified waste, 1; Review of the performance assessment research

Maeda, Toshikatsu; Sakamoto, Yoshiaki; Nakayama, Shinichi; Yamaguchi, Tetsuji; Ogawa, Hiromichi

JAERI-Review 2001-001, 25 Pages, 2001/02

JAERI-Review-2001-001.pdf:1.28MB

no abstracts in English

JAEA Reports

Corrosion of iron buried in clay

Sumiyama, Morio*

JNC-TJ8400 2000-009, 138 Pages, 2000/02

JNC-TJ8400-2000-009.pdf:3.0MB

To evaluate corrosion behavior of carbon steel, a candidate materials of overpack, buried in soil for a long time, the water pipes buried in freshwater clay for a long time we digged out and the soil environment and the corrosion weight loss of pipes have been researched. From the results, a corrosion model (an empirical equation), an oxygen reduction reaction rate-determing step type, of carbon steel buried in soil was introduced. The corrosion data of under ground pipe collected by the Japan Community Gas Associations was used to increase reliability of the corrosion model equation. These data are one of researches of corrosion behavior of carbon steel buried in soil for a long time studied by at home and abroad. 38 samples buried freshwater clay were selected in 171 samples. With estimating the corrosion velocities and the soil environment factors of the above data, the maximum depth of pit corrosion was calculated by the statistical method of the extreme values using the area of overpack as the recurrent time. The correlation between the soil environment factors and the corrosion weight loss was obtained by the correlation analysis. The corrosion model of the maximum depth of pit corrosion at 0.99 of cumulative probability was compared between the under ground pipe data and the above data. On the reference data and the above data, the corrosion model equation; H = aY$$^{n}$$ was compared with the maximum depth of pit corrosion at 0.99 cumulative probability. The data of water pipes and community gas pipes at 0.99 cumulative probability showed the reasonable values when these data were compared with the reference data. So that the model was proved as a good corrosion model m the neutral low dissolved oxygen environment.

JAEA Reports

None

; Tanai, Kenji; Taniguchi, Wataru; Sakai, Yuichi*

PNC-TN8410 95-027, 56 Pages, 1995/02

PNC-TN8410-95-027.pdf:2.82MB

None

Journal Articles

Barrier performance of concrete pit for shallow land burial of LLW

;

Hoken Butsuri, 25, p.107 - 114, 1990/00

no abstracts in English

Oral presentation

Influence of pore water vaporization on re-saturation process in Full-Scale EBS test by the Thermo-Hydro-Mechanical coupled analysis

Sato, Shin*; Yamamoto, Shuichi*; Ono, Hirokazu; Tanai, Kenji; Fukaya, Masaaki*; Shimura, Tomoyuki*; Niunoya, Sumio*

no journal, , 

no abstracts in English

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