Oral presentation

[3A01-04] Engineering Technology for Coastal Area 1

Fri. Sep 13, 2019 9:45 AM - 10:50 AM Room A (Common Education Bildg. 1F C11)

Chair:Hitoshi Nakashima(Shimizu)

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9:45 AM - 10:00 AM

[3A01] Study on engineering of EBS for geological disposal in coastal area

(1)Outline of the R&D issues to be focused and its approach

*Minoru Emori¹, Misahiro Kawakubo¹, Masato Kobayashi¹, Tomoko Ishii¹, Daisuke Hayashi¹ (1. RWMC)

10:00 AM - 10:15 AM

[3A02] Study on engineering of EBS for geological disposal in coastal area

(2)Effect of chemical composition of synthetic solution on corrosion behavior of weld joint of carbon steel overpack

*Masato Kobayashi¹, Masahiro Kawakubo¹, Katsushi Shibata², Naoto Tagami², Kousuke Inaba² (1. RWMC, 2. MHI)

10:15 AM - 10:30 AM

[3A03] Study on engineering of EBS for geological disposal in coastal area

(3)Behavior of buffer material during re-saturation in saline environment

*Tomoko Ishii¹, Masataka Imai^1,2, Kenji Ishii³, Ichizo Kobayashi³ (1. RWMC, 2. Dia Consultants, 3. Kajima)

10:30 AM - 10:45 AM

[3A04] Study on engineering of EBS for geological disposal in coastal area

(4)Mechanical behavior of buffer material in saline environment

*Ichizo Kobayashi¹, Kenji Ishii¹, Masataka Imai^2,3, Tomoko Ishii³ (1. Kajima Corporation, 2. Dia Consultants, 3. Radioactive Waste Management Funding and Research Center)

Time reserved for Chair （10:45 AM - 10:50 AM）

Oral presentation

[3A05-08] Engineering Technology for Coastal Area 2

Fri. Sep 13, 2019 10:50 AM - 11:55 AM Room A (Common Education Bildg. 1F C11)

Chair:Haruo Sato(Okayama Univ.)

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10:50 AM - 11:05 AM

[3A05] Study on engineering of EBS for geological disposal in coastal area

(5)Chemical alteration and mechanical property of cement based material in salt water

*Daisuke Hayashi¹, Masahito Shibata², Kazuko Haga², Masaya Ida^1,3, Hitoshi Owada¹ (1. RWMC, 2. Taiheiyo Consultant, 3. present: Taiheiyo Consultant)

11:05 AM - 11:20 AM

[3A06] Study on engineering of EBS for geological disposal in coastal area

(6)Examination of prediction methods of salt water permeation and steel corrosion accompanied by chemical alteration for cement based materials.

*Kazuko Haga¹, Sayuri Tomita¹, Masaya Ida³, Yosifumi Hosokawa², Daisuke Hayashi³, Hitoshi Owada³ (1. Taiheiyo Consultant Co., Ltd., 2. Taiheiyo Cement Co.,Ltd., 3. RWMC)

11:20 AM - 11:35 AM

[3A07] Study on engineering of EBS for geological disposal in coastal area

(7)Hydrogeological modeling of the near field under construction and operations

*Masataka Imai^1,4, Tsuneyuki Maemura², Eiko Sugimoto², Hajime Takao³, Yasutaka Mochida^1,5, Minoru Emori¹, Tomoko Ishii¹ (1. RWMC, 2. Dia Consultants, 3. JGC Corporation , 4. Present: Dia Consultants, 5. Present: Japan NUS)

11:35 AM - 11:50 AM

[3A08] Study on engineering of EBS for geological disposal in coastal area

(8)The trial for systematization of the method showing establishment of repository system

*Hajime Takao¹, Kazutoshi Yamazaki¹, Tsuneyuki Maemura², Fujitaka Kato³, Kyoko Ichikawa ^3,5, Masataka Imai^4,6, Minoru Emori⁴, Tomoko Ishii⁴, Daisuke Hayashi⁴ (1. JGC, 2. Dia Consultants , 3. JANUS, 4. RWMC, 5. present: RWMC, 6. present: Dia Consultants)

Time reserved for Chair （11:50 AM - 11:55 AM）

Oral presentation

[3A09-13] Material for Buffer, Filling and Backfill

Fri. Sep 13, 2019 2:45 PM - 4:10 PM Room A (Common Education Bildg. 1F C11)

Chair:Masato Kobayashi(RWMC)

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2:45 PM - 3:00 PM

[3A09] Character variation of Tsukinuno Na-Bentonite

Part3 the compaction and hydraulic properties

*Shoji MORODOME¹, Masakazu Ito¹ (1. KUNIMINE INDUSTRIES)

3:00 PM - 3:15 PM

[3A10] Evaluation of swelling deformation using buffer material swelling sensor on the full-scale in-situ engineered barrier system experiment

*Shun Kimura¹, Masashi Nakayama¹, Kimihiro Kinota¹, Kenji Tanai¹, Sumio Niunoya², Tomoyuki Shimura², Masaaki Fukaya² (1. JAEA, 2. OBAYASHI)

3:15 PM - 3:30 PM

[3A11] Study on Hydrogen Generation by Gamma-ray Irradiation Using Various Cement Pasts

*Shoichi Ogawa¹, Kumi Negishi ¹, Masaya Ida¹, Daisuke Hayashi², Hitoshi Owada² (1. Taiheiyo Consultant, 2. RWMC)

3:30 PM - 3:45 PM

[3A12] Filling density of crushed-rock-based backfill material with different-sized bentonite pellets

*Mitsunobu Okihara¹, Hitoshi Nakashima¹, Ryoji Yahagi¹, Akira Saito¹, Satohito Toguri¹ (1. Shimizu Corporation)

3:45 PM - 4:00 PM

[3A13] Preliminary test for sealing boreholes with bentonite blocks

*Hitoshi Nakashima¹, Akira Saito¹, Toshiyuki Hokari¹ (1. Shimizu Corporation)

Time reserved for Chair （4:00 PM - 4:10 PM）

Oral presentation

[1C01-07] Waste

Wed. Sep 11, 2019 10:00 AM - 11:55 AM Room C (Common Education Bildg. 1F C13)

Chair:Keiichiro WAKASUGI(Tokai Univ.)

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10:00 AM - 10:15 AM

[1C01] Leaching behavior of radionuclides from irradiated endpiece under geological repository condition

(1)Objectives and overview of the research program

*Tomofumi Sakuragi¹, Hiroyoshi Ueda¹, Yu Yamashita², Masashi Ichikawa³ (1. RWMC, 2. TOSHIBA ESS, 3. NFD)

10:15 AM - 10:30 AM

[1C02] Leaching behavior of radionuclides from irradiated endpiece under geological repository condition

(2)Estimation of a radioactive inventory in an endpiece sample

*Tsukasa Sugita¹, Kenichi Yoshioka¹, Yu Yamashita¹, Tomofumi Sakuragi², Hiroyoshi Ueda², Masashi Ichikawa³ (1. Toshiba Energy Systems & Solutions Corporation, 2. Radioactive Waste Management Funding and Research Center, 3. Nippon Nuclear Fuel Development Co.)

10:30 AM - 10:45 AM

[1C03] Evaluation of HLW glass dissolution rate as a function of dissolved silica concentration using Si isotopes

*Ryosuke Kato¹, Yaohiro Inagaki¹, Tatsumi Arima¹, Kazuya Idemitsu¹, Keita Mutou¹, Sanae Shibutani² (1. Kyushu Univ., 2. NUMO)

10:45 AM - 11:00 AM

[1C04] Study of Method to Improve Site Disposal Efficiency by High Waste Content Glass

*Junichi Yamashita¹, Tetsuo Fukasawa², Akihiro Suzuki³ (1. TAIEI , 2. HGNE, 3. NFD)

11:00 AM - 11:15 AM

[1C05] Analysis of neutron field on geological repository of various high-level radioactive waste

(2)Development of gamma-ray field analysis module

Daiki Maeda¹, *Naoto Aizawa¹, Tomohiko Iwasaki¹ (1. Tohoku Univ.)

11:15 AM - 11:30 AM

[1C06] The effect of carbonate ion on the dissolution of UO₂

*Yuriko Moroi¹, Akira Kirishima¹, Daisuke Akiyama¹, Nobuaki Sato¹, Akira Kitamura², Shingo Kimuro² (1. Tohoku university, 2. JAEA)

11:30 AM - 11:45 AM

[1C07] Effect of Partitioning and Transmutation of Minor Actinoids on Long-Term Safety Assessment of High-Level Radioactive Waste Repository

*Takumi Ojima¹, Daisuke Kawasaki¹, Satoshi Yanagihara¹ (1. Univ. of Fukui)

Time reserved for Chair （11:45 AM - 11:55 AM）

Oral presentation

[1C08-10] Natural Barrier

Wed. Sep 11, 2019 2:45 PM - 3:35 PM Room C (Common Education Bildg. 1F C13)

Chair:Taiji Chida(Tohoku Univ.)

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2:45 PM - 3:00 PM

[1C08] Theoretical estimation method of the groundwater chemistry in granite.

*Teruki Iwatsuki¹, Hiroaki Murakami¹ (1. JAEA)

3:00 PM - 3:15 PM

[1C09] The application of Machine learning for reducing the computational load in the particle tracking simulation

Reduction of the computational load by identifying the path line

*Keita Sumiki¹, Takumi Saito² (1. Nuclear Engineering and Management,Graduate School of Engineering, Univ. of Tokyo , 2. Nuclear Professional School,Graduate School of Engineering, Univ. of Tokyo )

3:15 PM - 3:30 PM

[1C10] Evaluation of Migration Behavior of Colloids in the Natural Barrier around the waste facilities.

*Yosuke Akagi¹, Toshiyuki Nakazawa¹, Kohei Yamaguchi¹, Hisao Sato¹, Takumi Saito², Naoyuki Tamura³, Naoki Yoshii³, Takashi Kozawa³ (1. Mitsubishi Materials Corporation, 2. The university of Tokyo, 3. Japan Nuclear Fuel Limitd)

Time reserved for Chair （3:30 PM - 3:35 PM）

Oral presentation

[1C11-15] Nuclide Migration 1

Wed. Sep 11, 2019 3:35 PM - 4:55 PM Room C (Common Education Bildg. 1F C13)

Chair:Tomofumi Sakuragi(RWMC)

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3:35 PM - 3:50 PM

[1C11] Estimation of deposition behavior of supersaturated silicic acid under the condition coexisting Mg ions and Al ions

*Atsushi Oomukai¹, Taiji Chida¹, Yuichi Niibori¹ (1. Tohoku University Graduate School of Engineering )

3:50 PM - 4:05 PM

[1C12] Influence of co-existing ions on the deposition behavior of supersaturated silicic acid on chlorite and sericite

*Takafumi Saito¹, Taiji Chida¹, Yuichi Niibori¹ (1. Tohoku University)

4:05 PM - 4:20 PM

[1C13] The effect of salt concentration on the diffusion of anions in Boom Clay

*Yuya Mizukami¹, Shingo Tanaka², Naoko Watanabe², Tamotsu Kozaki², Yosuke Akagi³ (1. Graduate School of Engineering Hokkaido University, 2. Faculty of Engineering Hokkaido University, 3. Mitsubishi Materials Corporation)

4:20 PM - 4:35 PM

[1C14] Fundamental Study of Migration Behavior of Cesium under the Unsaturated Condition through One-dimensional Column Experiments

*Masayuki Kogure¹, Ozutsumi Takenori¹, Yuichi NiiBori¹, Taiji Chida¹ (1. Tohoku Univ.)

4:35 PM - 4:50 PM

[1C15] Fundamental Study on Modeling of Radionuclide Transport Behaviors Considering Detouring Paths through an Unsaturated Layer

*Takenori Ozutsumi¹, Masayuki Kogure¹, Yuichi Niibori¹, Chida Taiji¹ (1. Tohoku Univ.)

Time reserved for Chair （4:50 PM - 4:55 PM）

Oral presentation

[1C16-19] Nuclide Migration 2

Wed. Sep 11, 2019 4:55 PM - 6:00 PM Room C (Common Education Bildg. 1F C13)

Chair:Shingo Tanaka(Hokkaido Univ.)

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4:55 PM - 5:10 PM

[1C16] Consideration on modeling of Nb sorption onto clay minerals in the presence of Ca

Tetsuji Yamaguchi¹, Ko Henmi¹, Logan Barr¹, Asako Shimada¹, *Saki Ohira¹, Yoshihisa Iida¹ (1. JAEA)

5:10 PM - 5:25 PM

[1C17] Effect of Carbonate on the Migration Behavior of Neptunium in Bentonite

*Masayuki Hirakawa¹, Kazuya Idemitsu¹, Ryota Yamada¹, Keisuke Yoshida¹, Yaohiro Inagaki¹, Tatsumi Arima¹ (1. Kyushu Univ.)

5:25 PM - 5:40 PM

[1C18] Diffusion behavior of Copper ions in Bentonite

*Keisuke Yoshida¹, Kazuya Idemitsu², Masayuki Hirakawa¹, Ryota Yamada¹, Yaohiro Inagaki², Tatsumi Arima² (1. Kyushu Univ., 2. Kyushu University Department of Engineering)

5:40 PM - 5:55 PM

[1C19] DGT sampling of exchangeable Cs-137

(2)Application of DGT for Fukushima environments

*MASAFUMI FUKUOKA¹, Takumi Saito¹, Kenso Fujiwara², Kazuki IIjima² (1. Univ. of Tokyo, 2. JAEA)

Time reserved for Chair （5:55 PM - 6:00 PM）

Sessions

V. Nuclear Fuel Cycle and Nuclear Materials » 505-2 Waste Disposal and Its Environmental Aspects

[3A01-04] Engineering Technology for Coastal Area 1

(1)Outline of the R&D issues to be focused and its approach

(2)Effect of chemical composition of synthetic solution on corrosion behavior of weld joint of carbon steel overpack

(3)Behavior of buffer material during re-saturation in saline environment

(4)Mechanical behavior of buffer material in saline environment

[3A05-08] Engineering Technology for Coastal Area 2

(5)Chemical alteration and mechanical property of cement based material in salt water

(6)Examination of prediction methods of salt water permeation and steel corrosion accompanied by chemical alteration for cement based materials.

(7)Hydrogeological modeling of the near field under construction and operations

(8)The trial for systematization of the method showing establishment of repository system

[3A09-13] Material for Buffer, Filling and Backfill

Part3 the compaction and hydraulic properties

[1C01-07] Waste

(1)Objectives and overview of the research program

(2)Estimation of a radioactive inventory in an endpiece sample

(2)Development of gamma-ray field analysis module

[1C08-10] Natural Barrier

Reduction of the computational load by identifying the path line

[1C11-15] Nuclide Migration 1

[1C16-19] Nuclide Migration 2

(2)Application of DGT for Fukushima environments

Authentication