Oral Presentation

[1C01-04] Radioactive inventory evaluation

Wed. Sep 7, 2016 2:45 PM - 3:50 PM Room C (Kumume City Plaza - Gallery 2)

Chair: Koichi Kitamura (JAEA)

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2:45 PM - 3:00 PM

[1C01] An effect of neutron-nenergy spectrum for radioactivity calculation for decommissioning

*Ken-ichi Tanaka¹, Jun Ueno² (1.The Institute of Applied Energy , 2.Genden Nuclear Engineering and Service Company)

3:00 PM - 3:15 PM

[1C02] Fundamental investigations for precise estimation of activation

(1)Analysis and uncertainty for determination of trace elements

*Norikazu Kinoshita¹, Yuichi Tanimoto¹, Kazuaki Kosako¹, Akane Tada¹, Kazuyuki Torii¹, Itaru Kurosawa¹ (1.Shimizu Corporation)

3:15 PM - 3:30 PM

[1C03] Fundamental investigations for precise estimation of activation

(2)Analysis of trace elements and estimation of radioactivities by activation

*Kazuyuki Torii¹, Norikazu Kinoshita¹, Yuichi Tanimoto¹, Kazuaki Kosako¹, Akane Tada¹, Itaru Kurosawa¹ (1.SHIMIZU CORPORATION)

3:30 PM - 3:45 PM

[1C04] Influence of ⁵⁹Ni radioactivity on decommissioning

*hideo ezure¹ (1.NAIS)

Time reserved for Chair （3:45 PM - 3:50 PM）

Oral Presentation

[1C05-08] Scenario evaluation, System development, Dismantling technology

Wed. Sep 7, 2016 3:50 PM - 4:55 PM Room C (Kumume City Plaza - Gallery 2)

Chair: Ken-ichi Tanaka (IAE)

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3:50 PM - 4:05 PM

[1C05] Optimization Study for Waste Packaging of Dismantled Reactor Components

Development of Package Number Calculation Model

*Jumpei Takahashi¹, Daisuke Kawasaki¹, Satoshi Yanagihara¹ (1.University of Fukui)

4:05 PM - 4:20 PM

[1C06] Evaluation of Decommissioning Cost

(3)Study of Evaluation Methods for a Large-scale Power Reactor

*Haruka Okude¹, Daisuke Kawasaki¹, Satoshi Yanagihara¹ (1.University of FUKUI)

4:20 PM - 4:35 PM

[1C07] Integration of Knowledge Management Support System for the Decommissioning of Nuclear Facilities

(6)Activity for Knowledge Transfer of Technical Expert

*Yasuaki Kato^1,2, Satoshi Yanagihara¹, Yukihiro Iguchi^1,2, Masashi Tezuka², Yuya Koda² (1.University of Fukui, 2.Japan Atomic Energy Agency)

4:35 PM - 4:50 PM

[1C08] In-situ dismantling of the liquid waste storage tank LV-1 in the JRTF

(8)Cutting of lower part of the LV-1 tank

*Yuta Yokozuka¹, Ryuji Mimura¹, Toshiki Fujikura¹, Koichi Nemoto¹, Shigeo Shida¹ (1.Japan Atomic Energy Agency)

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

Oral Presentation

[2C01-05] Decontamination technology 1

Thu. Sep 8, 2016 9:35 AM - 10:55 AM Room C (Kumume City Plaza - Gallery 2)

Chair: Hirokazu Tanaka (MMC)

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9:35 AM - 9:50 AM

[2C01] Development of the advanced T-OZONTM for PWR decommissioning

(3)Analysis of oxide film on metal in simulated PWR primary water

*Yumi Yaita¹, Koji Negishi¹, Masato Okamura¹, Taro Kanamaru², Hiromi Aoi² (1.TOSHIBA, Power and Industrial Systems R&D Center , 2.TOSHIBA, Isogo Engieering Center)

9:50 AM - 10:05 AM

[2C02] Development of the advanced T-OZONTM for PWR decommissioning

(4)Ozone concentration evaluation in PWR primary system

*Yasushi Yamamoto¹, Toshihiro Yoshii¹, Yumi Yaita¹, Koji Negishi¹, Kanamaru Taro², Hiromi Aoi² (1.Toshiba, Power and Industrial Systems R&D Center, 2.Toshiba, Isogo Engineering Center)

10:05 AM - 10:20 AM

[2C03] The Laser Peeling Box and Its Decontamination Performances

*Eisuke John Minehara¹ (1.The Wakasa Wan Energy Research Center)

10:20 AM - 10:35 AM

[2C04] Decontamination of concrete surface by laser peeling technology

*Ryuichiro Yamagishi¹, Satoshi Tsuzuki¹, Ryoya Ishigami¹, Shin'ichi Toyama¹, Eisuke John Minehara¹ (1.WERC)

10:35 AM - 10:50 AM

[2C05] Decontamination method for inside of small diameter piping waste

*Daisuke Tsuchida¹, Hiroshi Takahashi² (1.Japan Atomic Energy Agency , 2.Fuji Furukawa Engineering & Construction Co.,Ltd)

Time reserved for Chair （10:50 AM - 10:55 AM）

Oral Presentation

[2C06-09] Decontamination technology 2

Thu. Sep 8, 2016 10:55 AM - 12:00 PM Room C (Kumume City Plaza - Gallery 2)

Chair: Kazuyuki Torii (Shimizu Corporation)

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10:55 AM - 11:10 AM

[2C06] Development of Remote Decontamination Techniques for Reactor Building

Demonstration test of Decontamination Equipment for Upper Floors; Demonstration test plan

*hitoshi sakai^1,2, Masahiro Saito^1,2, Hirotoshi Murata³, Yutaka Arai^1,4, Yohei Ueno^1,4, Hironori Onitsuka^1,5, Masahiro Yano^1,5 (1.IRID, 2.Toshiba , 3.TEPCO, 4.Hitachi-GE, 5.MHI)

11:10 AM - 11:25 AM

[2C07] Development of Remote Decontamination Techniques for Reactor Building

(2)Demonstration test of Decontamination Equipment for Upper Floors; Test result (Blast System)

*Hironori Onitsuka^1,2, Masahiro Yano^1,2, Daiko Sugimoto^1,2, Ikki Tsujimoto^1,2, Noriaki Shimonabe^1,2, Takehito Fukushima^1,3, Yutaka Arai^1,4, Yohei Ueno^1,4, Hirotoshi Murata⁵ (1.IRID, 2.MHI, 3.TOSHIBA, 4.HITACHI-GE, 5.TEPCO)

11:25 AM - 11:40 AM

[2C08] Development of Remote Decontamination Techniques for Reactor Building

(3)Demonstration test of Decontamination Equipment for Upper Floors; Test result (High-pressure Water Jet System)

*Yohei Ueno^1,2, Fujio Yoshikubo^1,2, Yutaka Arai^1,2, Masahiro Hiratsuka^1,2, Ryu Odawara^1,2, Hirotoshi Murata³, Katsuhiko Sato^1,4, Masahiro Yano^1,5, Hironori Onitsuka^1,5 (1.IRID, 2.HITACHI-GE, 3.TEPCO HD, 4.TOSHIBA, 5.MHI)

11:40 AM - 11:55 AM

[2C09] Decontamination method for the concrete rubbles in Fukushima Daiichi Nuclear Power Station

*Hiroshi Kimura¹, Itaru Kurosawa¹, Kazuyuki Torii¹, Kohei Urabe¹ (1.Shimz Corporation)

Time reserved for Chair （11:55 AM - 12:00 PM）

Oral Presentation

[2C10-15] Study for Reactor dismantling including application for Fukushima 1

Thu. Sep 8, 2016 2:45 PM - 4:20 PM Room C (Kumume City Plaza - Gallery 2)

Chair: Norikazu Kinoshita (Shimizu Corporation)

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2:45 PM - 3:00 PM

[2C10] Technology Development for the Reactor Dismantling in Fugen (2)

1. Strategy for the Sampling from the Reactor Structure and Demonstraton of the Elemental Technology for the Reactor Dismantling

*Hiroki IWAI¹, Yasuyuki NAKAMURA¹, Hidehiko MATSUO¹, Hiroyuki MIZUI¹, Kazuya SANO¹ (1.Japan Atomic Energy Agency)

3:00 PM - 3:15 PM

[2C11] Technology Development for the Reactor Dismantling in Fugen (2)

2. Development of the Sampling Device for Reactor Structure

*Kimihiko MATSUO¹, Tatsuhiko ISHITOBI¹, Hiroshi OKA¹, Hiroki IWAI², Hidehiko Matsuo², Yasuyuki NAKAMURA², Kazuya SANO² (1.MITSUBISHI HEAVY INDUSTRIES, 2.Japan Atomic Energy Agency)

3:15 PM - 3:30 PM

[2C12] Technology Development for the Reactor Dismantling in Fugen (2)

3. Demonstration of the laser cutting technology in Reactor facility

*Yasuyuki Nakamura¹, Hiroki Iwai¹, Kazuya Sano¹, Kousuke Yamamoto¹, Kenta Aratani¹ (1.JAEA)

3:30 PM - 3:45 PM

[2C13] Development on processing technology with combination of laser and water jet for decommissioning of Fukushima Daiichi Nuclear Power Station

Capability of the processing technique

*Toshihiko Takebe^1,3, Toshihide Hanari¹, Tomonori Yamada¹, Hiroyuki Daido¹, Ippei Ishizuka², Shinya Ohmori², Koichi Kurosawa², Gou Sasaki³, Masahiro Nakada³, Hideaki Sakai³ (1.JAEA, 2.HGNE, 3.SUGINO)

3:45 PM - 4:00 PM

[2C14] Development on processing technology with combination of laser and water jet for decommissioning of Fukushima Daiichi Nuclear Power Station

(2)Observation of gouging processes using a high speed camera

*Toshihide Hanari¹, Toshihiko Takebe^1,3, Tomonori Yamada¹, Hiroyuki Daido¹, Ippei Ishizuka², Shinya Ohmori², Koichi Kurosawa², Gou Sasaki³, Masahiro Nakada³, Hideaki Sakai³ (1.JAEA, 2.HGNE, 3.SUGINO)

4:00 PM - 4:15 PM

[2C15] Evaluation of dust emissions associated with the rubble removal of reactor building top of Fukushima Daiichi nuclear power plant

Reduction measures and grasp of dust emission under demolition in the open air under the influence of wind

*yuta shinki¹, hiroshi mochizuki¹, kazuya suenaga¹, kei ogino¹, kenji takagi², makoto masuda², yuichi tsukahara³, takao himeno³ (1.TOKYO ELECTRIC POWER COMPANY HOLDINGS, 2.KAJIMA CORPORATION, 3.SHIMIZU CORPORATION)

Time reserved for Chair （4:15 PM - 4:20 PM）

Oral Presentation

[2C16-22] Study for Reactor dismantling including application for Fukushima 2

Thu. Sep 8, 2016 4:20 PM - 6:10 PM Room C (Kumume City Plaza - Gallery 2)

Chair: Toru Kitagaki (JAEA)

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4:20 PM - 4:35 PM

[2C16] Technology Development to Evaluate Dose Rate Distribution and to Search for Fuel Debris Submerged in Water for Decommissioning of Fukushima Daiichi Nuclear Power Station

(1)Objective and Research Plan

*Jun-ichi Katakura¹, Keisuke Okumura², Kangsoo Kim³, Malcolm John Joyce⁴, Barry Lennox⁵ (1.Nagaoka University of Technology, 2.JAEA, 3.NMRI, 4.Lancaster Univ., 5.Univ. of Manchester)

4:35 PM - 4:50 PM

[2C17] Technology Development to Evaluate Dose Rate Distribution and to Search for Fuel Debris Submerged in Water for Decomissioning of Fukushima Daiichi Nuclear Power Station

(2)Construction of Radiation Sources and Three-dimensional Plant Model for Evaluation of Dose Rate Distribution

*Keisuke Okumura¹, Wakaei Sato¹, Hirobumi Maeda¹, Ikuo Wakaida¹, Tadahiro Washiya¹, Jun-ichi Katakura² (1.JAEA, 2.Nagaoka University of Technology)

4:50 PM - 5:05 PM

[2C18] Technology Development to Evaluate Dose Rate Distribution and to Search for Fuel Debris Submerged in Water for Decommissioning of Fukushima Daiichi Nuclear Power Station

(3)Verification of the performance of the debris survey by multibeam profiling sonar using imitation debris

*Ken-ichi Sawada¹, Kangsoo Kim¹, Saori Yokota¹, Kato Michio¹, Kazuya Nishimura¹, Naoteru Odano², Jun-ichi Katakura³ (1.NMRI, 2.Senboku City, 3.Nagaoka University of Technology)

5:05 PM - 5:20 PM

[2C19] Effects of heating on the strength and the microstructure of the reactor structural steels during severe accident

(1)Estimation of the effect of heating during severe accident on the microstructure and hardness of the reactor core internal component materials

*Yuto Aoki¹, Keita Yoshinaga¹, Kengo Hashimoto¹, Wataru Yoshida¹, Shiro Jitsukawa¹ (1.NIT Fukushima college)

5:20 PM - 5:35 PM

[2C20] Effects of heating on the strength and the microstructure of the reactor structural steels during severe accident

(2)Estimation of the heating effects on the strength of containment vessel steels of the damaged Fukushima Daiichi nuclear plants

*Keita Yoshinaga¹, Yuto Aoki¹, Kengo Hashimoto¹, Rikito Konno¹, Shiro Jitsukawa¹ (1.NIT Fukushima college)

5:35 PM - 5:50 PM

[2C21] Influence of Atmosphere on Reaction between B₄C, 304 Grade of Stainless Steel and Zircaloy at 1473K

*Shigeru Ueda¹, Xu Gao¹, Ryosuke Sasaki¹, Shin-ya Kitamura¹, Yoshinao Kobayashi² (1.IMRAM, Tohoku University, 2.Titech)

5:50 PM - 6:05 PM

[2C22] Dissolution behavior of SUS304 stainless steel into molten Fe-Cr-Ni-B-C alloy

*Yoshinao Kobayashi¹, Yuuya Morita¹, Takehiro Sumita¹, Shigeru Ueda², Toshio Nakagiri³ (1.Tokyo Institute of Technology, 2.Tohoku University, 3.Japan Atomic Energy Agency)

Time reserved for Chair （6:05 PM - 6:10 PM）

Oral Presentation

[3E01-09] Characterization of Fuel Debris

Fri. Sep 9, 2016 9:40 AM - 12:00 PM Room E (Kumume City Plaza - Kurumeza Theatre)

Chair: Yoshinao Kobayashi (Tokyo Tech)

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9:40 AM - 9:55 AM

[3E01] Characterization of Fuel Debris (28’A)

(1)Outline of the Project

*HIDEKI OGINO¹, KIMIHIKO YANO¹, MASAHIDE TAKANO¹, TADAHIRO WASHIYA¹, YASUAKI MIYAMOTO¹, SHOHEI KAWANO² (1.International Research Institute for Nuclear Decommissioning(Japan Atomic Energy Agency), 2.International Research Institute for Nuclear Decommissioning(Toshiba Corporation))

9:55 AM - 10:10 AM

[3E02] Characterization of Fuel Debris (28’A)

(2)Mechanical properties of Zr(O)

*Takanori Hoshino^1,2, Nobuo Okamura^1,2, Masayuki Watanabe^1,2, Kenji Koizumi^1,2 (1.International Research Institute for Nuclear Decommissioning, 2.Japan Atomic Energy Agency)

10:10 AM - 10:25 AM

[3E03] Characterization of Fuel Debris (28'A)

(3)Influence of Minor Additives on the Phase Relationships of (U,Zr)O₂ Simulated Fuel Debris

*Masahide Takano^1,2, Atsushi Onozawa^1,2, Ayako Sudo^1,2 (1.JAEA, 2.IRID)

10:25 AM - 10:40 AM

[3E04] Characterization of Fuel Debris (28’A)

(4)Characterization of simulated MCCI products by light-concentrating heating

*Ayako Sudo^1,2, Masahide Takano^1,2, Atsushi Onozawa¹ (1.Japan Atomic Energy Agency, 2.International Research Institute for Nuclear Decommissioning)

10:40 AM - 10:55 AM

[3E05] Characterization of Fuel Debris (28’A)

(5)Phase and microstructure of large scale MCCI test product

*Toru Kitagaki¹, Hirotomo Ikeuchi¹, Kimihiko Yano¹, Hideki Ogino¹, Laurent Brissonneau², Brigitte Tormos², Pascal Piluso² (1.IRID/JAEA, 2.CEA)

10:55 AM - 11:10 AM

[3E06] Characterization of Fuel debris (28'A)

(6)Large-scale simulated debris examination using UO₂ at NNC Kazakhstan

*Shohei Kawano¹, Takahiro Hayashi¹, Yuya Takahashi¹, Masaki Asano¹, Naomitsu Toyohara¹ (1.International Research Institute for Nuclear Decommissioning(Toshiba Corp.))

11:10 AM - 11:25 AM

[3E07] Characterization of Fuel Debris (28’A)

(7)High-temperature behavior of fuel debris and stainless steel

*Yuya Takahashi¹, Shohei Kawano¹, Takahiro Hayashi¹, Yasuo Morishima¹, Masumitsu Toyohara¹ (1.IRID(Toshiba))

11:25 AM - 11:40 AM

[3E08] Characterization of Fuel Debris (28A')

(8)Evaluation of Water Content and Drying Characterization for Fuel Debris

*Seiya Suzuki^1,2, Akira Nakayoshi^1,2, Nobuo Okamura^1,2, Masayuki Watanabe^1,2, Kenji Koizumi^1,2 (1.International Research Institute for Nuclear Decommissioning, 2.Japan Atomic Energy Agency)

11:40 AM - 11:55 AM

[3E09] Characterization of Fuel Debris (28'A)

(9)Oxidation behavior of simulated fuel debris

*Masahiro Nishina¹, Shun Hirooka¹, Kyoichi Morimoto¹ (1.Japan Atomic Energy Agency)

Time reserved for Chair （11:55 AM - 12:00 PM）

Oral Presentation

[3E10-17] Dcommissioning technologies for Fukushima accident

Fri. Sep 9, 2016 2:45 PM - 4:50 PM Room E (Kumume City Plaza - Kurumeza Theatre)

Chair: Masahide Takano (JAEA)

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2:45 PM - 3:00 PM

[3E10] Strength evaluation of reinforced concrete structure subjected to severe accident

Part 1 Strength of concrete subjected to heating and water exposure

Hiroshi Masaki¹, Norihiko Tanaka¹, Yoshiyuki Kawaharada¹, Koichi Saito², Yasuyuki Goto², Osamu Kontani³, *Shunsuke Ishikawa³, Keishi Kawasumi³ (1.Toshiba Corporation, 2.Hitachi-GE Nuclear Energy, Ltd., 3.Kajima Corporation)

3:00 PM - 3:15 PM

[3E11] Strength evaluation of reinforced concrete structure subjected to severe accident

Part 2 Structural experiment of scale model after heating and water exposure

Hiroshi Masaki¹, Norihiko Tanaka¹, Yoshiyuki Kawaharada¹, Koichi Saito², Yasuyuki Goto², Osamu Kontani³, *Takashi Okayasu³, Shunsuke Ishikawa³, Keishi Kawasumi³ (1.Toshiba Corporation, 2.Hitachi-GE Nuclear Energy, Ltd., 3.Kajima Corporation)

3:15 PM - 3:30 PM

[3E12] Strength evaluation of reinforced concrete structure subjected to severe accident

Part 3 Simulation analysis for Structural experiment of scale model

Yasuo Hijioka¹, Hiroshi Masaki¹, Koichi Saito², Yasuyuki Goto², Osamu Kontani³, Shunsuke Ishikawa³, *Keishi Kawasumi³ (1.Toshiba Corporation, 2.Hitachi-GE Nuclear Energy, Ltd., 3.Kajima Corporation)

3:30 PM - 3:45 PM

[3E13] Development of Repair and Water leakage Stoppage Technology for S/C using washout-resistant concrete

(1)Outline of experiment (overview, mixing test for mix propotion of concrete and first concrete placing)

*Hiroshi Masaki¹, Yuji Murakami², Toshiaki Wakui², Hisashi Imai², Sumiyuki Sawada², Toshinori Dekura¹ (1.TOSHIBA CORPORATION, 2.HAZAMA ANDO CORPORATION)

3:45 PM - 4:00 PM

[3E14] Development of Repair and Water leakage Stoppage Technology for S/C using washout-resistant concrete

(2)Investigation of concrete mix propotion for washout-resistant concrete

*Yuji Murakami¹, Sumiyuki Sawada¹, Hisashi Imai¹, Toshiaki Wakui¹, Ryo Yamashita¹, Hiroshi Masaki², Shigeyoshi Nagataki³ (1.HAZAMA ANDO CORPORATION, 2.TOSHIBA CORPORATION, 3.Professor Emeritus, Tokyo Institute of Technology)

4:00 PM - 4:15 PM

[3E15] Development of Repair and Water leakage Stoppage Technology for S/C using washout-resistant concrete

(3)Irradiation test for washout-resistant concrete

*Sumiyuki Sawada¹, Kiyoshi Amemiya¹, Hisashi Imai¹, Yuji Murakami¹, Toshiaki Wakui¹, Hiroshi Masaki² (1.HAZAMA ANDO CORPORATION, 2.TOSHIBA CORPORATION)

4:15 PM - 4:30 PM

[3E16] Development of Repair and Water leakage Stoppage Technology for S/C using washout-resistant concrete

(4)Validation test for long distance fluidity of washout-resistant concrete and flow analysis

*Ryo Yamashita¹, Toshiaki Wakui¹, Yuji Murakami¹, Hisashi Imai¹, Sumiyuki Sawada¹, Hiroshi Masaki² (1.HAZAMA ANDO CORPORATION, 2.TOSHIBA CORPORATION)

4:30 PM - 4:45 PM

[3E17] Development of Repair and Water leakage Stoppage Technology for S/C using washout-resistant concrete

(5)Sealing Experiment of φ50mm hole modeling damaged part on S/C shell

*Hisashi Imai¹, Yuji Murakami¹, Toshiaki Wakui¹, Sumiyuki Sawada¹, Hiroshi Masaki² (1.HAZAMA ANDO CORPORATION, 2.TOSHIBA CORPORATION)

Time reserved for Chair （4:45 PM - 4:50 PM）

Sessions

IV. Nuclear Fuel Cycle and Nuclear Materials » 405-3 Decommissioning Technology of Nuclear Facilities

[1C01-04] Radioactive inventory evaluation

(1)Analysis and uncertainty for determination of trace elements

(2)Analysis of trace elements and estimation of radioactivities by activation

[1C05-08] Scenario evaluation, System development, Dismantling technology

Development of Package Number Calculation Model

(3)Study of Evaluation Methods for a Large-scale Power Reactor

(6)Activity for Knowledge Transfer of Technical Expert

(8)Cutting of lower part of the LV-1 tank

[2C01-05] Decontamination technology 1

(3)Analysis of oxide film on metal in simulated PWR primary water

(4)Ozone concentration evaluation in PWR primary system

[2C06-09] Decontamination technology 2

Demonstration test of Decontamination Equipment for Upper Floors; Demonstration test plan

(2)Demonstration test of Decontamination Equipment for Upper Floors; Test result (Blast System)

(3)Demonstration test of Decontamination Equipment for Upper Floors; Test result (High-pressure Water Jet System)

[2C10-15] Study for Reactor dismantling including application for Fukushima 1

1. Strategy for the Sampling from the Reactor Structure and Demonstraton of the Elemental Technology for the Reactor Dismantling

2. Development of the Sampling Device for Reactor Structure

3. Demonstration of the laser cutting technology in Reactor facility

Capability of the processing technique

(2)Observation of gouging processes using a high speed camera

Reduction measures and grasp of dust emission under demolition in the open air under the influence of wind

[2C16-22] Study for Reactor dismantling including application for Fukushima 2

(1)Objective and Research Plan

(2)Construction of Radiation Sources and Three-dimensional Plant Model for Evaluation of Dose Rate Distribution

(3)Verification of the performance of the debris survey by multibeam profiling sonar using imitation debris

(1)Estimation of the effect of heating during severe accident on the microstructure and hardness of the reactor core internal component materials

(2)Estimation of the heating effects on the strength of containment vessel steels of the damaged Fukushima Daiichi nuclear plants

[3E01-09] Characterization of Fuel Debris

(1)Outline of the Project

(2)Mechanical properties of Zr(O)

(3)Influence of Minor Additives on the Phase Relationships of (U,Zr)O2 Simulated Fuel Debris

(4)Characterization of simulated MCCI products by light-concentrating heating

(5)Phase and microstructure of large scale MCCI test product

(6)Large-scale simulated debris examination using UO2 at NNC Kazakhstan

(7)High-temperature behavior of fuel debris and stainless steel

(8)Evaluation of Water Content and Drying Characterization for Fuel Debris

(9)Oxidation behavior of simulated fuel debris

[3E10-17] Dcommissioning technologies for Fukushima accident

Part 1 Strength of concrete subjected to heating and water exposure

Part 2 Structural experiment of scale model after heating and water exposure

Part 3 Simulation analysis for Structural experiment of scale model

(1)Outline of experiment (overview, mixing test for mix propotion of concrete and first concrete placing)

(2)Investigation of concrete mix propotion for washout-resistant concrete

(3)Irradiation test for washout-resistant concrete

(4)Validation test for long distance fluidity of washout-resistant concrete and flow analysis

(5)Sealing Experiment of φ50mm hole modeling damaged part on S/C shell

Authentication

(3)Influence of Minor Additives on the Phase Relationships of (U,Zr)O₂ Simulated Fuel Debris

(6)Large-scale simulated debris examination using UO₂ at NNC Kazakhstan