Oral presentation

[1H05-09] Waste

Wed. Mar 16, 2022 2:45 PM - 4:15 PM Room H

Chair: Taiji Chida (Tohoku Univ.)

2:45 PM - 3:00 PM

[1H05] Study on advanced nuclear energy system based on the environmental impact of radioactive waste disposal

(5)Integrated environmental load assessment for diversifying nuclear fuel cycle conditions

*Hidekazu Asano¹, Tomofumi Sakuragi¹, Ryo Hamada¹, Chi Young Han², Masahiko Nakase², Tatsuro Matsumura³, Go Chiba⁴, Hiroshi Sagara², Kenji Takeshita² (1. RWMC, 2. Tokyo Tech, 3. JAEA, 4. Hokkaido Univ.)

3:00 PM - 3:15 PM

[1H06] Study on advanced nuclear energy system based on the environmental impact of radioactive waste disposal

(6)Repository footprint and exposure dose for vitrified waste from MOX fuel by simplified MA separation

*Ryo Hamada¹, Hidekazu Asano¹, Tomofumi Sakuragi¹ (1. RWMC)

3:15 PM - 3:30 PM

[1H07] Study on Advanced Nuclear Energy System Based on the Environmental Impact of Radioactive Waste Disposal

(7)Development of an Assessment Program of the Environmental Load of Radioactive Wastes for NFCSS

*Chi Young Han¹, Hiroshi Sagara¹, Hidekazu Asano² (1. Tokyo Tech, 2. RWMC)

3:30 PM - 3:45 PM

[1H08] Study on advanced nuclear energy system based on the environmental impact of radioactive waste disposal

(8)Surveillance of separation technology for simplified MA separation

*Naoya Shigekiyo¹, Masahiko Nakase¹, Hidekazu Asano^1,2, Tomofumi Sakuragi², Ryo Hamada², Kenji Takeshita¹ (1. Tokyo Tech, 2. RWMC)

3:45 PM - 4:00 PM

[1H09] Study on advanced nuclear energy system based on the environmental impact of radioactive waste disposal

(9)Evaluation of solvent extraction stages in MA separation process based on environmental load in waste disposal

*Tatsuro Matsumura¹, Yasuhiro Tsubata¹, Hidekazu Asano², Tomofumi Sakuragi², Ryo Hamada² (1. Japan Atomic Energy Agency, 2. RWMC)

Time reserved for Chair （4:00 PM - 4:15 PM）

Oral presentation

[1H10-13] Radionuclide Inventory

Wed. Mar 16, 2022 4:15 PM - 5:30 PM Room H

Chair: Taishi Kobayashi (Kyoto Univ.)

4:15 PM - 4:30 PM

[1H10] Impact on geological disposal due to prolonged cooling period of spent fuel before reprocessing and study of mitigation measures

(1)The impact on characteristics of vitrified waste and temperature of engineered barrier

*Toyonobu Nabemoto¹, Takao Ikeda², Yasuhiro Suyama³, Kazuyoshi Takenobu⁴, Masakazu Chijimatsu⁵, Susumu Sakashita⁶, Satoshi Hirooka⁷, Arata Kurihara⁸, Masayoshi Kuji⁹, Hideki Takayama¹⁰ (1. IHI, 2. JGC JAPAN CORPORATION, 3. KAJIMA, 4. ATK-ENG, 5. HAZAMA ANDO, 6. OYO, 7. JX NIPPON EXPLORATION AND DEVELOPMENT, 8. DIA CONSULTANTS, 9. MAEDA, 10. ENAA)

4:30 PM - 4:45 PM

[1H11] Impact on geological disposal due to prolonged cooling period of spent fuel before reprocessing and study of mitigation measures

(2)The impact on the safety

*Takao Ikeda¹, Yasuhiro Suyama², Toyonobu Nabemoto³, Kazuyoshi Takenobu⁴, Masakazu Chijimatsu⁵, Susumu Sakashita⁶, Satoshi Hirooka⁷, Arata Kurihara⁸, Masayoshi Kuji⁹, Hideki Takayama¹⁰ (1. JGC JAPAN CORPORATION, 2. KAJIMA, 3. IHI, 4. ATK, 5. HAZAMA ANDO, 6. OYO, 7. JX NIPPON EXPLORATION AND DEVELOPMEN, 8. DIA CONSULTANTS, 9. MAEDA, 10. ENGINEERING ADVANCEMENT ASSOCIATION OF JAPAN)

4:45 PM - 5:00 PM

[1H12] Waste characteristics based on the various burnup conditions and the projected cooling time of spent fuels

*Tomofumi Sakuragi¹, Ryo Hamada¹, Hidekazu Asano¹, Kota Kawai², Kyohei Yoshinaga², Naoki Kondo², Toshiro Oniki³, Midori Uchiyama³ (1. RWMC, 2. MRI, 3. IHI)

5:00 PM - 5:15 PM

[1H13] Inventory evaluation in waste using soil near Fukushima Daiichi Nuclear Power Station

*Kenso Fujiwara¹, Kazuki Iijima¹ (1. JAEA)

Time reserved for Chair （5:15 PM - 5:30 PM）

Oral presentation

[2H01-06] Migration/Sorption 1

Thu. Mar 17, 2022 10:15 AM - 12:00 PM Room H

Chair: Kenso Fujiwara (JAEA)

10:15 AM - 10:30 AM

[2H01] Evaluation of Sorption Characteristics of Selenate Ions onto Calcium Silicate Hydrate

*Tsugumi Seki¹, Taiji Chida¹, Yuichi Niibori¹ (1. Tohoku Univ.)

10:30 AM - 10:45 AM

[2H02] Structural analysis and site selectivity of Cesium adsorption on Calcium Silicate Hydrates

*Keita Higuchi¹, Takahiro Ohkubo¹, Kumi Negishi², Masahito Shibata², Yukio Tachi³ (1. Chiba Univ., 2. Taiheiyo Consultant, 3. JAEA)

10:45 AM - 11:00 AM

[2H03] Permeability Changes of Granite Flow-paths with Na-rich Highly Alkaline Groundwater using Micro-flow Cell and its Simple Evaluation Model

*Kazuki Furiya¹, Tsugumi Seki¹, Taiji Chida¹, Yuichi Niibori¹ (1. Tohoku Univ.)

11:00 AM - 11:15 AM

[2H04] Effects of Ca and Mg Ions on Deposition Behavior of Supersaturated Silicic Acid under the Condition of Saline Water

*Non Shirasawa¹, Masahide Izumiura¹, Taiji Chida¹, Tsugumi Seki¹, Yuichi Niibori¹ (1. Tohoku Univ.)

11:15 AM - 11:30 AM

[2H05] Sorption Behaviors of Europium onto Calcium Silicate Hydrate in the Coexistence of Boric Acid under the Disposal Environment Temperature

*Tomoki Gyoten¹, Tsugumi Seki¹, Taiji Chida¹, Yuichi Niibori¹ (1. Tohoku Univ.)

11:30 AM - 11:45 AM

[2H06] Experimental Study on Sorption Behavior of Cs and Sr onto Calcium Silicate Hydrate under the Formation Processes

*Reo Tamura¹, Tsugumi Seki¹, Taiji Chida¹, Yuichi Niibori¹ (1. Tohoku University)

Time reserved for Chair （11:45 AM - 12:00 PM）

Oral presentation

[2H07-12] Migration/Sorption 2

Thu. Mar 17, 2022 2:45 PM - 4:30 PM Room H

Chair: Tomofumi Sakuragi (RWMC)

2:45 PM - 3:00 PM

[2H07] Quantifying effect of compositional variation in cement on sorption distribution coefficient.

*Naoyuki Tamura¹, Hisao Satoh¹, Yu Yamashita², Yoshihisa Kaneda³, Mitsushi Motoyama⁴ (1. JNFL, 2. TOSHIBA ESS, 3. Taiheiyo Consultant, 4. JGC)

3:00 PM - 3:15 PM

[2H08] Molecular dynamics study of cation and water dynamics on Outer Surface space in Smectite-water system.

*Naoki Matsui¹, Takahiro Ohkubo¹, Yukio Tachi², Kenji Yotsuji², Yuki Sugiura² (1. Chiba Univ., 2. JAEA)

3:15 PM - 3:30 PM

[2H09] Cryogenic TRLFS investigation on U(VI) sorption on illite in the presence of carbonate ions

*Huiyang Mei¹, Noboru Aoyagi¹, Takumi Saito², Naofumi Kozai¹, Yuki Sugiura¹, Yukio Tachi¹ (1. JAEA, 2. UTokyo)

3:30 PM - 3:45 PM

[2H10] Effect of Carbonate on the Migration Behavior of Neptunium in Compacted Bentonite

*Kazuya Idemitsu¹, Yaohiro Inagaki¹, Tatsumi Arima¹ (1. Kyushu university)

3:45 PM - 4:00 PM

[2H11] Assessment of the effect of organic materials for the solubility of technetium (IV).

*Shingo Kimuro¹, Hajime Iwata¹, Ayano Eguchi¹, Yoshiaki Nishikawa¹, Yukio Tachi¹ (1. JAEA)

4:00 PM - 4:15 PM

[2H12] Adsorption state of Eu in small pores studied by TRLFS

*Kento Murota^1,2, Noboru Aoyagi³, Huiyang Mei³, Takumi Saito¹ (1. UTokyo, 2. NRA, 3. JAEA)

Time reserved for Chair （4:15 PM - 4:30 PM）

Oral presentation

[2H13-17] Migration/Sorption 3

Thu. Mar 17, 2022 4:30 PM - 6:00 PM Room H

Chair: Kazuya Idemitsu (Kyushu Univ.)

4:30 PM - 4:45 PM

[2H13] Applicability of coastal seabed environments as a potential host rock of HLW disposal

*Koraphat Fairat¹, Takumi Saito¹, Kanako Toda¹ (1. UTokyo)

4:45 PM - 5:00 PM

[2H14] Modeling of Cs⁺, Sr²⁺ and Eu³⁺ Sorption to Sodium-Activated Metakaolin-Based Geopolymers

*Anil Can Yildirim¹, Kanako Toda¹, Takumi Saito¹ (1. UTokyo)

5:00 PM - 5:15 PM

[2H15] Study on the solid phase and solubility of Zr,Ce oxide solid solutions

*Yutaro Sato¹, Taishi Kobayashi¹, Atsushi Ikeda², Daiju Matsumura², Ryuhei Motokawa², Takayuki Sasaki¹ (1. Kyoto Univ., 2. JAEA)

5:15 PM - 5:30 PM

[2H16] Decomposition Rate of Asphalt under the Presence of Microorganisms in the Coarse Sandstone Layer.

*Tatsunori Fukumaki¹, Mitsushi Motoyama², Naoyuki Tamura³ (1. JANUS, 2. JGC, 3. JNFL)

5:30 PM - 5:45 PM

[2H17] Evaluation of Retardation Effect of Cesium under Unsaturated Conditions Considering Channel Formation

*Hirotaka Kawakami¹, Tsugumi Seki¹, Taiji Chida¹, Yuichi Niibori¹ (1. Tohoku University)

Time reserved for Chair （5:45 PM - 6:00 PM）

Sessions

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

[1H05-09] Waste

(5)Integrated environmental load assessment for diversifying nuclear fuel cycle conditions

(6)Repository footprint and exposure dose for vitrified waste from MOX fuel by simplified MA separation

(7)Development of an Assessment Program of the Environmental Load of Radioactive Wastes for NFCSS

(8)Surveillance of separation technology for simplified MA separation

(9)Evaluation of solvent extraction stages in MA separation process based on environmental load in waste disposal

[1H10-13] Radionuclide Inventory

(1)The impact on characteristics of vitrified waste and temperature of engineered barrier

(2)The impact on the safety

[2H01-06] Migration/Sorption 1

[2H07-12] Migration/Sorption 2

[2H13-17] Migration/Sorption 3

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