International Topical Workshop on Fukushima-Daiichi Decommissioning Research 2026
  FDR2026  
  October 03-05, 2026. J-Village, Naraha, Fukushima, JAPAN

Workshop Program (Tentative. As of Aug. 27, 2026)

DayTime J-Village Hall (A) J-Village Hall (B) Convention Hall Hikari Room
Oct. 3
(Sat.)
08:30 - 09:30 Track 3-1
Advanced Radioanalytical Methods (1)

Track 2-1
Robot Technology and Remote Control System (1)

Track 1-1
Fuel Debris Characterization and Analysis for Fukushima Daiichi Decommissioning

Track 1-2
Aerosol Generation and Characterization during Laser Processing of Fuel Debris

09:30 - 09:45 Break
09:45 - 10:45 Track 3-2
Advanced Radioanalytical Methods (2)

Track 2-2
Robot Technology and Remote Control System (2)

Track 1-3
Neutron Detection and Multiplication Analysis for Fuel Debris Characterization

Track 1-4
Airborne Release and Dust Dispersion during Fuel Debris Cutting

10:45 - 11:00 Break
11:00 - 12:00 Track 3-3
Fuel Debris Characterization and In-Situ Screening

Track 2-3
Robot Technology and Remote Control System (3)

Track 1-5
Accident Phenomena and Analytical Methods for Fukushima Daiichi Decommissioning

Track 1-6
Airborne Release Assessment and Aerosol Monitoring during Fuel Debris Cutting

12:00 - 13:30 Lunch
13:30 - 13:50 Opening remarks

13:50 - 14:50 Plenary session 1
14:50 - 15:50 Plenary session 2
15:50 - 16:10 Break
16:10 - 17:10
Track 1-KN
Keynote: (Track 1)

Track 3-KN
Keynote: (Track 3)

17:10 - 17:40 Track 2-KN
Keynote: Decommissioning Robot

Track 4-KN
Keynote: uncertainty management

17:40 - 18:30 Break
18:30 - 20:30 Welcome Reception

Oct. 4
(Sun.)
08:30 - 09:30 Track 3-4
Reactor Monitoring and Safety Assessment (1)

Track 4-1
Comprehensive aspects of waste management


Break

Track 4-2
Material and decontamination

Track 1-7
Fuel Debris Formation and Structural Degradation Analysis

Track 1-8
CFD Modeling and Experiment of Aerosol Transport for Fuel Debris Retrieval

09:30 - 09:45 Break
Break
09:45 - 10:45 Track 3-5
Reactor Monitoring and Safety Assessment (2)

Track 1-9
Fuel Debris Handling, Storage, and Criticality Safety

Track 1-10
Materials Thermodynamics and Degradation for Fukushima Daiichi Decommissioning

10:45 - 11:00 Break
Break
11:00 - 12:00 Track 2-4
Robot Technology and Remote Control System (4)

Track 1-11
Reactor Investigation and Accident Progression Assessment at Fukushima Daiichi

Track 1-12
Computational Analysis of Fukushima Daiichi Accident Phenomena

12:00 - 13:20 Lunch
13:20 - 14:20 Track 2-5
Robot Technology and Remote Control System (5)

Track 4-3
Metal waste recycling

Track 1-13
Round Robin Characterization of Surrogate Fuel Debris for Fukushima Daiichi Decommissioning

Track 1-14
(No Session Name)

14:20 - 14:35 Break
14:35 - 15:35 Track 3-6
Digital Modeling and Data Analysis Technologies

Track 4-4
Processing and disposal

Track 1-15
Advanced Characterization of Prototypic and Surrogate Fuel Debris

Track 1-16
(No Session Name)

15:35 - 16:30 Break
16:30 - 18:00 Track 1-Pos
Poster session: Fukushima Daiichi Accident Analysis and Fuel Debris Retrieval


Track 2-Pos
Poster session: Robot Technology, Remote Control System


Track 3-Pos
Poster session: Radiation Measurement and Analysis


Track 4-Pos
Poster session: waste management

18:00 - 18:30 Break
18:30 - 20:30 Banquet

Oct. 5
(Mon.)
08:30 - 09:50 Track 3-7
Radiation Monitoring and Field Measurement Technologies

Track 4-5
Water decontamination and secondary waste

Track 1-17
International Collaborative Research on Fukushima Daiichi Accident Analysis and MCCI

Track 2-6
Robot Technology and Remote Control System (6)

09:50 - 10:15 Break
10:15 - 11:15 Track 3-Pnl
Panel: Radiation Measurement and Analysis

Track 4-Pnl
Panel: Waste Management

Track 1-Pnl
Panel: Fukushima Daiichi Accident Analysis and Fuel Debris Retrieval

Track 2-Pnl
Panel: Robot Technology and Remote Control System

11:15 - 11:30 Break
11:30 - 12:00
Closing remarks
12:00 - 13:00 Lunch
Oct. 3 (Sat.)
J-Village Hall (A)
Track 3-1. Advanced Radioanalytical Methods (1)
Oct. 3 (Sat.), 08:50 - 09:30, J-Village Hall (A)
Chair: Yoshihiro Iwata (Japan Atomic Energy Agency, Japan)
Hideki Tomita (Nagoya University, Japan)
FDR2026-1017
(Presentation Only)
Development of an automated flow-injection system for Se-79 determination
Kayo Yanagisawa, Makoto Matsueda, Kazuma Koarai, Yusuke Watanabe, Tomoko Haraga (Japan Atomic Energy Agency, Japan)
FDR2026-1096
(Presentation Only)
Simultaneous Measurement of Cs-137 and Sr-90 Distribution Inside the Fukushima Daiichi Nuclear Power Station Unit 3 Reactor Building Based on the Energy Spectrum Analysis of a Phoswich Detector
Dai Tateishi, Yuta Terasaka, Yuki Morishita, Yuki Sato (Japan Atomic Energy Agency, Japan), Yuta Ichiba (Tokyo Electric Power Company Holdings, Inc., Japan)
 
Track 3-2. Advanced Radioanalytical Methods (2)
Oct. 3 (Sat.), 09:45 - 10:45, J-Village Hall (A)
Chair: Masaaki Kaburagi (JAEA, Japan)
Yoshihiro Iwata (Japan Atomic Energy Agency, Japan)
FDR2026-1065
(Presentation Only)
Development of Tritiated Water Analysis using Highly Sensitive Mid-Infrared Laser Absorption Spectroscopy
Ryohei Terabayashi, Shota Goto, Norihiko Nishizawa, Shotaro Kitajima (Nagoya University, Japan), Hisashi Abe (National Institute of Advanced Industrial Science and Technology, Japan), Hideki Tomita (Nagoya University, Japan)
FDR2026-1012 Development of ¹⁴C analysis in concrete samples using cavity ring-down laser spectroscopy
Shota Goto, Ryohei Terabayashi, Hideki Tomita (Nagoya University, Japan)
FDR2026-1097 The Feasibility of Measuring Am Colloids in Solution Using ICP-MS
Kazuya Idemitsu, Yasuyuki Shikamori, Dai Aoki (Tohoku university, Japan)
 
Track 3-3. Fuel Debris Characterization and In-Situ Screening
Oct. 3 (Sat.), 11:00 - 11:40, J-Village Hall (A)
Chair: Hideki Tomita (Nagoya University, Japan)
Masaaki Kaburagi (JAEA, Japan)
FDR2026-1100
(Presentation Only)
Challenge for Screening of Nuclear Fuel Debris by Innovative Spectral Imaging and Its Verification by LIBS mapping: A Feasibility Study on the HSI–LIBS Method
Munkhbat Batsaikhan (Japan Atomic Energy Agency, Japan), Chisato Sakaguchi, Kan Sakamoto (Nippon Nuclear Fuel Development , Japan), Yoshihiro Iwata (Japan Atomic Energy Agency, Japan), Hiroaki Muta (Osaka University, Japan)
FDR2026-1086 Development of analysis and estimation techniques to determine the properties of fuel debris. -Evaluation of the Applicability of the Muon Scattering Method-
Naoto Kume, Kyohei Noguchi, Takuro Fujimaki, Fumihito Shinozaki, Yudhitya Kusumawati (Toshiba Corporation, Japan), Takahiro Tanaka, Makihito Aratani (Tousou Mirai Technology Co. Ltd., Japan)
 
Plenary session 1
Oct. 3 (Sat.), 13:50 - 14:50, J-Village Hall
Chair: Yutaka Watanabe (Tohoku University, Japan)
FDR2026-1133 Decommissioning after severe accident
Toyoshi Fuketa (Nuclear Damage Compensation and Decommissioning Facilitation Corporation, Japan)
 
Plenary session 2
Oct. 3 (Sat.), 14:50 - 15:50, J-Village Hall
Chair: Yutaka Watanabe (Tohoku University, Japan)
FDR2026-1132 Progress in the UK nuclear decommissioning programme
Neil Hyatt (Nuclear Waste Services, United Kingdom)
 
J-Village Hall (B)
Track 2-1. Robot Technology and Remote Control System (1)
Oct. 3 (Sat.), 08:30 - 09:30, J-Village Hall (B)
Chair: Taichi Yamada (JAEA, Japan)
Jinyi Lee (Korea Atomic Energy Research Institute, Korea)
FDR2026-1005
(Presentation Only)
Development of Lightweight Mobile Elevating Work Platforms (MEWPs) for High-Altitude Maintenance and Inspection in Nuclear Decommissioning Environments
Hocheol Shin, Sanryeong Seo, Jeongheon Ryu, Dongseok Ryu, Jongwon Park (Korea Atomic Energy Research Institute, Korea)
FDR2026-1048 Precision Enhancement of a Heavy-Duty Dual-Arm Robot via Flow Observer-Based Hydraulic Control and Multi-Joint Coordination
Jinyi Lee, Jongwon Park, Gaeun Shin, Seongjin Park (Korea Atomic Energy Research Institute, Korea)
 
Track 2-2. Robot Technology and Remote Control System (2)
Oct. 3 (Sat.), 09:45 - 10:45, J-Village Hall (B)
Chair: Satoshi Okada (Hitachi GE, Japan)
Jelle Van Rethy (Magics Technologies NV, Belgium)
FDR2026-1042
(Presentation Only)
Investigation inside the Reactor Pressure Vessels by a Robotic Arm and Telescopic Tube System
Hiroshi Konishi, Hirotaka Doi (IHI Corporation, Japan)
FDR2026-1050
(Presentation Only)
Next-Generation Digital Imaging for Nuclear Decommissioning: A Radiation-Hard-by-Design CMOS Camera Technology Without Shielding
Jelle Van Rethy, Idham Hafizh, Ying Cao (Magics Technologies NV, Belgium)
FDR2026-1018
(Presentation Only)
Development of Radiation Hardened Camera with Remote Focus Adjustment Function
Shinji Nomoto, Masahiro Masunaga (Hitachi, Ltd., Japan), Kota Sasaki, Yoichi Mahara, Satoshi Okada (Hitachi GE Vernova Nuclear Energy, Ltd., Japan)
 
Track 2-3. Robot Technology and Remote Control System (3)
Oct. 3 (Sat.), 11:00 - 12:00, J-Village Hall (B)
Chair: Atsushi Yamashita (Univ. Tokyo, Japan)
Yasuki Okuno (Tohoku Univ., Japan)
FDR2026-1053 Priority Control Navigation for Multi-Agent System in Narrow Environment
Raynaldio Limarga (The University of Manchester, United Kingdom), Matsuhira Nobuto, Atsushi Yamashita (University of Tokyo, Japan)
FDR2026-1024 Autonomous Radiation Surveying in Unknown Environments Using Mobile Robot with LiDAR and Gamma-Ray Detector
Linfeng Sun, Jiaxu Wu, Shinsuke Nakashima, Tessai Sugiura, Qi An, Atsushi Yamashita (The University of Tokyo, Japan)
FDR2026-1123 Feasibility Study of Laser-Based Wireless Power Transmission inside the Fukushima Daiichi Nuclear Power Station
Yasuki Okuno (Tohoku Univ., Japan), Hirokazu Ando (Osaka Metropolitan University College of Technology, Japan)
 
Convention Hall
Track 1-1. Fuel Debris Characterization and Analysis for Fukushima Daiichi Decommissioning
Oct. 3 (Sat.), 08:30 - 09:30, Convention Hall
Chair: Lucas Matthew Rolison (Los Alamos National Laboratory, United States)
Natalie Lauren Cannon (Los Alamos National Laboratory, United States)
FDR2026-1009 Development of fuel debris analysis technique using multilateral spectroscopies
Daisuke Akiyama, Ryo Endo (Tohoku University, Japan), Yoshihiro Okamoto, Hajime Tanida, Yuta Kumagai, Takumi Yomogida (Japan Atomic Energy Agency, Japan), Yuki Yokota, Akira Kirishima (Tohoku University, Japan)
FDR2026-1115
(Presentation Only)
Synchrotron X-ray Characterization of Fuel Debris Obtained during the First Trial Retrieval from Unit 2 of the Fukushima Daiichi Nuclear Power Station
Tohru Kobayashi, Masaaki Kobata, Hajime Tanida, Yoshihiro Okamoto, Tatsuo Fukuda, Takuya Tsuji, Shohei Matsuda, Goro Shibata, Ikuto Kawasaki, Shin-Ichi Fujimori, Yasihiro Yoneda, Yoichi Kirihara, Reisuke Doi, Tetsuo Okane, Toru Kitagaki, Hirotomo Ikeuchi, Hideki Ogino, Shingo Suzuki, Koji Maeda (Japan Atomic Energy Agency, Japan), Tsuyoshi Yaita (National Institutes for Quantum Science and Technology, Japan), Masato Mizokami, Shinya Mizokami, Mutsumi Hirai (Tokyo Electric Power Company Holdings, Inc, Japan)
FDR2026-1126
(Presentation Only)
Isotope Analysis of Debris from the Fukushima Daiichi Nuclear Power Plant toward Its Decommissioning
Taiki Tanaka (Japan Atomic Energy Agency, Japan)
 
Track 1-3. Neutron Detection and Multiplication Analysis for Fuel Debris Characterization
Oct. 3 (Sat.), 09:45 - 10:45, Convention Hall
Chair: Yukiko Furuhashi (Tokyo Electric Power Company Holdings, Inc., Japan)
Tatsuya Fukuyama (Central Research Institute of Electric Power Industry, Japan)
FDR2026-1006
(Presentation Only)
1FRAME: collaborative R&D focused on neutron detection, analysis, and simulations
Jesson Hutchinson, George McKenzie, Natalie Cannon, Joetta Goda, Daniela Henzlova, Cole Kostelac, Jawad Moussa, Mark Nelson, Michael Rising, Lucas Rolison, Robert Weldon, Nicholas Whitman (Los Alamos National Laboratory, United States)
FDR2026-1046
(Presentation Only)
Simulated neutron multiplication sensitivities to water content within the pedestal region of units 1-3
Lucas Matthew Rolison (Los Alamos National Laboratory, United States)
FDR2026-1037 Blind Assessment of System Multiplication Using Neutron Multiplicity Measurements Under Limited System Knowledge
Natalie Lauren Cannon (Los Alamos National Laboratory, United States)
 
Track 1-5. Accident Phenomena and Analytical Methods for Fukushima Daiichi Decommissioning
Oct. 3 (Sat.), 11:00 - 12:00, Convention Hall
Chair: Xin Li (Japan Atomic Energy Agency, Japan)
Ravinder Kumar (The University of Tokyo Japan, Japan)
FDR2026-1103 Thermal Decomposition of Organic Materials and Flammable Gas Formation under Fukushima Daiichi Unit 3 Conditions
Yukiko Furuhashi, Kazuhiro Koike, Takahiro Hoshino, Ryohei Endo (Tokyo Electric Power Company Holdings, Inc., Japan)
FDR2026-1022 Confirmatory examination of neutron detection events in the early phase of FDNPS accident (No. 2)
Yoichi Endo, Kan Sakamoto, Chisato Sakaguchi, Katsuaki Sasa (NIPPON NUCLEAR FUEL DEVELOPMENT CO., LTD., Japan), Masato Mizokami, Mutsumi Hirai (Tokyo Electric Power Company Holdings, Incorporated, Japan)
FDR2026-1088 Development of Supercritical Kinetic Analysis Methodology for Pure UO2 Particles Falling into Water by Using MIK1.0 Code
Nguyen Thi Dung, Hiroki Takezawa (Nagaoka University of Technology, Japan), Jun Nishiyama (Tokyo City University, Japan), Peng Hong Liem (Nippon Advanced Information Service, Japan), Toru Obara (Institute of Science Tokyo , Japan), Yoko Yoshimura (Nuclear Damage Compensation and Decommissioning Facilitation Corporation, Japan)
 
Track 1-KN. Keynote: (Track 1)
Oct. 3 (Sat.), 16:10 - 17:10, Convention Hall
Chair: Yutaka Watanabe (Tohoku University, Japan)
Marco Pellegrini (Politecnico di Milano, Italy)
FDR2026-1127
(Presentation Only)
Accident Progression of Fukushima Daiichi Unit 2 up to Fuel Relocation into the Pedestal (Keynote)
Kenichiro Nozaki (TEPCO SYSTEMS CORPORATION, Japan)
FDR2026-1114 Current status of analysis of fuel debris samples retrieved from Fukushima Daiichi Nuclear Power Station Unit 2 (Keynote)
Hirotomo Ikeuchi, Hideki Ogino, Koji Maeda, Toru Kitagaki, Masaaki Kobata, Tohru Kobayashi (Japan Atomic Energy Agency, Japan), Masato Mizokami, Shinya Mizokami (Tokyo Electric Power Company Holdings, Inc, Japan)
 
Track 2-KN. Keynote: Decommissioning Robot
Oct. 3 (Sat.), 17:10 - 17:40, Convention Hall
Chair: Hisashi Osumi (Chuo Univ., Japan)
Atsushi Yamashita (Univ. Tokyo, Japan)
FDR2026-1128
(Presentation Only)
Development of Decommissioning Robots at Hyper-Environment Robots Laboratory (Keynote)
Shigeo Hirose (Hakusan Coporation, Japan)
 
Hikari Room
Track 1-2. Aerosol Generation and Characterization during Laser Processing of Fuel Debris
Oct. 3 (Sat.), 08:30 - 09:30, Hikari Room
Chair: Taizo Kanai (Central Resarch Institute of Electric Power Industry, Japan)
Jean-Yves Colle (European Commission - JRC, Germany)
FDR2026-1010 Insights into aerosol production from laser heating of Phebus-FPT0 fuel debris – The AEROLAS Project
Stéphanie Alage, Emmanuel Porcheron, Marc Barrachin (The Authority for Nuclear Safety and Radiation Protection, France), Jean-Yves Colle, Nikolaj Slaby, Thierry Wiss, Ramon Carlos-Marquez, Antonio Bulgheroni (European Commission, Germany), Christophe Journeau, Viviane Bouyer (CEA, France)
FDR2026-1025 Measurement of aerosols produced in ZrO2 and (U,Zr)O2 using a RAdioelements Dispersion Event Setup in Hot Cells (RADES-HC), a device to study Corium Dust Dispersion by Laser
Thierry Wiss, Jean-Yves Colle, Nikolaj Slaby, Ondrej Benes, Jaroslava Pravdova, Rachel Eloirdi (European Commission - JRC, Germany), Kinya Nakamura, Tadafumi Koyama, Koichi Uozumi, Taizo Kanai, Shun Kanagawa (Central Research Institute of Electric Power Industry, Japan)
FDR2026-1026
(Presentation Only)
Implementing a RAdioelements Dispersion Event Setup in Hot Cells (RADES-HC), a device to study Corium Dust Dispersion by Laser on Three Miles Island samples
Jean-Yves Colle, Nikolaj Slaby, Thierry Wiss, Ondrej Benes, Jaroslava Pravdova, Rachel Eloirdi (European Commission - JRC, Germany), Kinya Nakamura (Central Research Institute of Electric Power Industry , Japan), Tadafumi Koyama (2Central Research Institute of Electric Power Industry , Japan), Koichi Uozumi, Taizo Kanai, Shun Kanagawa (Central Research Institute of Electric Power Industry , Japan)
 
Track 1-4. Airborne Release and Dust Dispersion during Fuel Debris Cutting
Oct. 3 (Sat.), 09:45 - 10:45, Hikari Room
Chair: Koichi Uozumi (Central Research Institute of Electric Power Industry, Japan)
Youichi Tsubota (Japan Atomic Energy Agency, Japan)
FDR2026-1059 Evaluation of airborne release behaviour during fuel debris cutting for safety assessment - Overview of the second phase project (JFY2023-2024) and dust dispersion with chisel cutting -
Koichi Uozumi, Tadafumi Koyama, Kinya Nakamura, Kenta Inagaki, Taizo Kanai, Shun Kanagawa, Kenji Tanno, Yoshikazu Yamamoto, Tatsuya Fukuyama (Central Research Institute of Electric Power Industry, Japan), Takeshi Honda, Daisuke Yamauchi, Fumio Totsuka, Koichi Yoshisako, Kazutaka Mogi, Yuichi Iwata (Tokyo Electric Power Company Holdings, Inc., Japan)
FDR2026-1043 Evaluation of airborne release behaviour during fuel debris cutting for safety assessment - Estimation of ARF during disc-cutter cutting of in-vessel and ex-vessel fuel debris in air –
Kinya Nakamura (Central Research Institute of Electric Power Industry (CRIEPI), Japan), Tadafumi Koyama, Taizo Kanai, Koichi Uozumi, Shun Kanagawa (Central Research Institute of Electric Power Industry, Japan), Takeshi Honda, Daisuke Yamauchi, Fumio Totsuka, Koichi Yoshisako, Kazutaka Mogi, Yuichi Iwata (TEPCO HD, Japan), Yuji Kitsunai (Nippon Nuclear Fuel Development, Co., Ltd., Japan), Masahide Takano (JAEA, Japan), Christophe Journeau, VivianE. Bouyer (CEA, France), Emmanuel Porcheron (ASNR, France), Romain Berlemont, Yvan Lallot (ONET TECHNOLOGIES ND, France)
FDR2026-1049 Evaluation of airborne release behaviour during fuel debris cutting for safety assessment - Impact of underwater cutting techniques-disk cutter, core boring, and laser-on ARF from cold materials –
Taizo Kanai, Tadafumi Koyama, Koichi Uozumi, Kinya Nakamura (Central Resarch Institute of Electric Power Industry, Japan), Takeshi Honda, Daisuke Yamauchi, Fumio Totsuka, Koichi Yoshisako (TEPCO HD, Japan), Kazutaka Mogi (Mitsubishi Heavy Industry, Japan), Yuichi Iwata (TEPCO HD, Japan), Takeshi Yokoyama (Mitsubishi Heavy Industry, Japan), Seiji Yoshimura (IHI, Japan)
 
Track 1-6. Airborne Release Assessment and Aerosol Monitoring during Fuel Debris Cutting
Oct. 3 (Sat.), 11:00 - 12:00, Hikari Room
Chair: Ayumi Itoh (Insitute of Science Tokyo, Japan)
Ruicong Xu (The University of Tokyo, Japan)
FDR2026-1001 Aerosol generation during laser cutting of fuel debris simulants and stainless steel under environmental conditions representative of Fukushima Daiichi
Emmanuel Porcheron (Autorité de Sûreté Nucléaire et de Radioprotection , France), Stéphanie Alage (ASNR, France), Ioana Doyen, Christophe Journeau, Viviane Bouyer (CEA, France), Romain Berlemont (ONET, France)
FDR2026-1058 Evaluation of airborne release behavior during fuel debris cutting for safety assessment - Development of a numerical simulation method for dust dispersion behavior under wet conditions
Tatsuya Fukuyama, Kenta Inagaki, Kenji Tanno, Tadafumi Koyama, Koichi Uozumi, Kinya Nakamura, Taizo Kanai, Shun Kanagawa (Central Research Institute of Electric Power Industry, Japan), Takeshi Honda, Daisuke Yamauchi, Fumio Totsuka, Koichi Yoshisako, Kazutaka Mogi, Yuichi Iwata (Tokyo Electric Power Company Holdings, Incorporated, Japan)
FDR2026-1089 Development of a Disposable Aerosol Sizing Device for the In-Situ Measurement of Highly Radioactive Aerosols
Youichi Tsubota, Tomoaki Kato (Japan Atomic Energy Agency, Japan)
 
Track 3-KN. Keynote: (Track 3)
Oct. 3 (Sat.), 16:10 - 17:10, Hikari Room
Chair: Yuki Sato (JAEA, Japan)
Katsunori Ueno (Hitachi, Japan)
FDR2026-1084
(Presentation Only)
Overview of the Real-time Dose-Rate Monitor with Scintillation Materials and Optical Fiber (Keynote)
Shunsuke Kurosawa (Nagoya University, Japan)
FDR2026-1093
(Presentation Only)
Development of an in-situ screening method for fuel debris using laser-induced breakdown spectroscopy (Keynote)
Yoshihiro Iwata (Japan Atomic Energy Agency, Japan)
 
Track 4-KN. Keynote: uncertainty management
Oct. 3 (Sat.), 17:10 - 17:40, Hikari Room
Chair: Colin Austin (EnergySolutions Inc., United States)
Co-Chair: Takumi Saito (Univ. Tokyo, Japan)
FDR2026-1106 Research and development for the waste management stream for FDNPS: How should uncertainty be considered? (Keynote)
Kazuki Iijima (Japan Atomic Energy Agency, Japan)
 
 
Oct. 4 (Sun.)
J-Village Hall (A)
Track 3-4. Reactor Monitoring and Safety Assessment (1)
Oct. 4 (Sun.), 08:50 - 09:30, J-Village Hall (A)
Chair: Hiroshi Seki (Mirion Technologies (Canberra) KK, Japan)
Yuki Morishita (Japan Atomic Energy Agency, Japan)
FDR2026-1052
(Presentation Only)
Direct calculation of neutron noise observable
Wilfried Monange (ASNR, France)
FDR2026-1051
(Presentation Only)
Investigating corium modelling frameworks for reactivity and neutron noise simulations
Belen Monteagudogodoy (ASNR, France)
 
Track 3-5. Reactor Monitoring and Safety Assessment (2)
Oct. 4 (Sun.), 09:45 - 10:45, J-Village Hall (A)
Chair: Yuki Morishita (Japan Atomic Energy Agency, Japan)
Wataru Kada (Tohoku University , Japan)
FDR2026-1045
(Presentation Only)
Feasibility of Prompt Fission Gamma Counting for Criticality Estimations at Fukushima-Daiichi
Cole Kostelac, George McKenzie, Jesson Hutchinson (Los Alamos National Laboratory, United States)
FDR2026-1078 Preliminary Study of B 10 Neutron-Detector-Based Subcriticality Monitoring for Fuel Debris Handling
Kyoka Maruta, Katsunori Ueno (Hitachi Ltd., Japan), Satoshi Okada (Hitachi GE Vernova Nuclear Energy, Ltd., Japan), Genichiro Wakabayashi, Atsushi Sakon, Hiroshi Shiga (Kindai University, Japan), Kenichi Watanabe (Kyushu University, Japan), Tomohiro Endo (Nagoya University, Japan)
FDR2026-1090
(Presentation Only)
Evaluation of Neutron Detection Performance of a Silicon Carbide Semiconductor Neutron Detector in a Field Exposed to Both Low-Fluence Neutrons and High-Dose Gamma Rays
Kanta Nagai (University of Tokyo, Japan), Kei Aoyama, Takahito Suzuki (Fuji Electric .Co, Japan), Takashi Nakamura (Fuji Electric .Co and Tohoku University, Japan), Tetsuro Matsumoto, Akihiko Masuda, Seiya Manabe, Junya Ishii, Kenji Shimazoe (National Institute of Advanced Industrial Science and Technology, Japan)
 
Track 2-4. Robot Technology and Remote Control System (4)
Oct. 4 (Sun.), 11:00 - 12:00, J-Village Hall (A)
Chair: Kuniaki Kawabata (JAEA, Japan)
Hanwool Woo (Kogakuin University, Japan)
FDR2026-1023 Autonomous Exploration for Localization and Intensity Estimation of Multiple Radiation Sources in Obstacle Environments
Kazuki Hosaka, Woo Hanwool (Kogakuin University, Japan)
FDR2026-1035 Study on Automatic Camera Viewpoint Control for Teleoperated Manipulation
Tomoyo Maki, Hanwool Woo (Kogakuin University, Japan)
 
Track 2-5. Robot Technology and Remote Control System (5)
Oct. 4 (Sun.), 13:20 - 14:20, J-Village Hall (A)
Chair: Rui Fukui (The University of Tokyo, Japan)
Akihiko Nishimura (Japan Atomic Energy Agency, Japan)
FDR2026-1047 Proposal for Continuous Monitoring of Decommissioning Systems in Harsh Environments
Tamehide Yamada, Yasuki Karita (AproLink Corporation, Japan), Akihiko Nishimura (University of Fukui, JAEA, Japan)
FDR2026-1033 Three-Point FBG Sensor-Based Smart Container for Remote Debris State Estimation
Akihiko Nishimura (Japan Atomic Energy Agency, Japan)
FDR2026-1077 Design of a Multi-Arm Rail Structure for Fuel Debris Sampling and Analysis of the Effects of Robot Placement on Remote Operability
Jincheng Yang, Boyuan Chen, Go Oya, Taiken Matsuzawa, Koki Honda, Rui Fukui (The University of Tokyo, Japan)
 
Track 3-6. Digital Modeling and Data Analysis Technologies
Oct. 4 (Sun.), 14:35 - 15:35, J-Village Hall (A)
Chair: Wataru Kada (Tohoku University , Japan)
Katsunori Ueno (Hitachi, Japan)
FDR2026-1040 Application of Point Cloud Data Measured by 3D Scanners for In Situ Low Level Waste and Clearance Assessments using Gamma Spectrometry
Hiroshi Seki, Dante Nakazawa, Yosuke Suga, Atsuo Suzuki, Kohat Nagai (Mirion Technologies (Canberra) KK, Japan)
FDR2026-1110
(Presentation Only)
Radiation Source Estimation for Supporting Fukushima-Daichi Decommissioning: Inverse Analysis Using LASSO and Sensitivity Evaluation
Toshihide Hanari, Kuniaki Kawabata, Takashi Imabuchi (Japan Atomic Energy Agency, Japan)
FDR2026-1055 Computational Study of Aerosol Leakage Behavior from an Accident-Damaged Reactor Containment Vessel
Jun Ishimoto, Koji Dozaki, Takayuki Aoki, Yutaka Watanabe (Tohoku University, Japan)
 
Track 1-Pos. Poster session: Fukushima Daiichi Accident Analysis and Fuel Debris Retrieval
Oct. 4 (Sun.), 16:30 - 18:00, Foyer
FDR2026-1121 Development of an accelerator-driven active neutron interrogation of nuclear fuel debris using liquid scintillation detectors
Taiyo Asakawa, Takafumi Tsujimoto, Sora Ito, Ryo Otoguro, Miwa Misako, Wataru Kada (Tohoku University, Japan), Hiroki Kusano, Takaoki Takanashi, Yasuki Okuno (RIKEN RAP, Japan), Shigeo Matsuyama (Tohoku University, Japan)
 
Track 3-Pos. Poster session: Radiation Measurement and Analysis
Oct. 4 (Sun.), 16:30 - 18:00, Foyer
Chair: Yuki Sato (JAEA, Japan)
Katsunori Ueno (Hitachi, Japan)
FDR2026-1038 Development of real-time radiation imaging technology using an omnidirectional detector for hotspot localization
Miyuki Sasaki, Yukihisa Sanada, Yuki Morishita (Japan Atomic Energy Agency, Japan), Tatsuo Torii (Fukushima University, Japan)
FDR2026-1056 Development of enhanced active neutron interrogation method to correct matrix effects for fissile mass measurement
Francois Delcroix (Orano group, Japan), Pierre Strock, Nicolas Breton (Orano, France)
FDR2026-1120
(Presentation Only)
The development and evaluation of a wearable RPL dosimeter device for protection and dosimetry with regard to eye-lens radiation exposure
Wataru Kada, Shintaro Ishihara, Taiyo Asakawa, Ryusei Takamura, Hiroki Kawamoto, Yutaka Fujimoto, Yohei Inaba, Sho Toyama, Shigeo Matsuyama (Tohoku University, Japan)
 
Track 4-Pos. Poster session: waste management
Oct. 4 (Sun.), 16:30 - 18:00, Foyer
FDR2026-1092 Proposal and Implementation of a Conservative Estimation Method for Radionuclide Concentrations in F1NPP Waste
Natsuki Kojima, Yuko Hatano (University of Tsukuba, Japan), Yoshikazu Koma, Yoko Takahatake, Keichi Oki (Japan Atomic Energy Agency, Japan), Kazuyuki Kato (Nuclear Damage Compensation and Decommissioning Facilitation Corporation, Japan)
FDR2026-1079
(Presentation Only)
Dissolution behavior of ceramic-solidified U–Fe–O system simulated fuel debris under low-pH conditions
Takuma Koyama (Kyoto University Graduate School of Engineering, Japan), Takayuki Sasaki, Taishi Kobayashi (Kyoto University, Japan), Daisuke Akiyama, Akira Kirishima (Tohoku University, Japan), Yoshihiro Okamoto (Japan Atomic Energy Agency, Japan)
FDR2026-1057 Alpha decontamination of waste from fuel debris retrieval by silver leaching
Anne-Laure De Perthuis (Orano group, Japan)
FDR2026-1075 Elucidation of the steam pyrolysis mechanism of spent ion exchange resins adsorbing Co at seawater condition
Yuqi Xing (Tokyo City Univercity, Japan), Koki Nakahara, Isamu Sato (Tokyo City University, Japan), Midori Uchiyama, Yasutomo Tajiri, Toshiro Oniki (IHI, Japan), Haruaki Matsuura (Tokyo City University, Japan)
FDR2026-1107 Clarification of cesium penetration behavior in concrete with various water-cement ratios
Hiroyuki Onoue (Tokyo City University, Japan)
FDR2026-1076 Study on the Correlation between Penetration Behavior and Microstructure in Cesium-Contaminated Concrete Materials
Shia Miyagawa (Tokyo City University, Japan)
FDR2026-1091 Development of a C-13-labeled SIMS method for evaluating inorganic carbon retention in cementitious materials
Kazuma Koarai (Japan Atomic Energy Agency, Japan), Kenso Fujiwara, Hiroki Hagiwara (Japan Atomic Energy Agency Japan, Japan)
FDR2026-1112
(Presentation Only)
Adsorption behavior of organic acids and carbonates to cement
Kenso Fujiwara, Yayoi Taneichi, Takamitsu Ishidera (Japan Atomic Enegy Agency, Japan)
FDR2026-1027 Development of a Phosphate-Modified Oyster Shell Adsorbent and Its Strontium Adsorption Properties
Ai Yokoo, Yoshihiro Suenaga, Hidenori Yoshida (Kagawa University , Japan)
FDR2026-1014 Study of adsorption performance of recyclable carbon-based adsorbent on the metal ions in nuclear waste water
Liam Hitch, Harry Hui Wu, Tao Ping Liu (Lynovatek Chemical Pte.Ltd., Singapore)
FDR2026-1116 Fundamental Evaluation of Titanate Modified Silica Adsorbent Alfacage for Alpha Nuclide Recovery
Tsuyoshi Arai, Erika Yamada (Shibaura Institute of Technology, Japan), Youko Takahatake, Yoshikazu Koma (Japan Atomic Energy Agency, Japan), Jun Hashimoto, Kaname Kubo, Masashi Kaneko (Fuji Sangyo Co., Ltd., Japan)
FDR2026-1125 Synthesis and Evaluation of a Silica-Supported Iminodiacetate Chelating Resin SIDAR for Radionuclide Removal from Fuel Debris Contaminated Water via Gravity-Driven Chromatography
Ryota Yahagi, Tsuyoshi Arai (Shibaura Institute of Technology, Japan)
 
J-Village Hall (B)
Track 4-1. Comprehensive aspects of waste management
Oct. 4 (Sun.), 08:30 - 10:10, J-Village Hall (B)
Chair: Kazuki Iijima (Japan Atomic Energy Agency, Japan)
Co-Chair: Patrick Dupeyrat (Cyclife Japan K.K., Japan)
FDR2026-1072
(Presentation Only)
Accelerated decommissioning and recovery at 1-F through recycling and application of lessons learned
Colin Austin (EnergySolutions Inc., United States)
FDR2026-1094 Fuel Debris as a Lifecycle Waste Management Challenge for Fukushima Daiichi
Andrew Ballard (Amentum Japan, Japan), Michelle Dickinson, Simon Rout (Amentum, United Kingdom)
FDR2026-1104
(Presentation Only)
Development of an Agentic AI-Based Knowledge Management Platform for the Nuclear Decommissioning Domain
Tomohiro Okamura (Institute of Science Tokyo, Japan), Takahiro Nishihara (NEUChain Technologies Inc, Japan), Masahiko Nakase (Institute of Science Tokyo, Japan)
FDR2026-1061 Development of an Integrated Framework Linking Radiochemical Data to Long-Term Storage and Disposal Assessments at Fukushima Daiichi
Takahiro Nishihara, Masahiko Nakase, Tomohiro Okamura (Science Tokyo, Japan)
FDR2026-1067 Integrated Framework of 1F Waste Management: Synergizing Material Science and AI-Driven Assessment for Robust Decommissioning
Masahiko Nakase, Takahiro Nishihara, Ryota Nakazawa, Tomohiro Okamura (Institute of Science Tokyo, Japan)
 
Track 4-2. Material and decontamination
Oct. 4 (Sun.), 10:30 - 11:50, J-Village Hall (B)
Chair: Masahiko Nakase (institute of Science Tokyo, Japan)
Co-Chair: Andrew Ballard (Amentum Japan, Japan)
FDR2026-1101
(Presentation Only)
Corrosion behavior of carbon steel at water line under gam-ma-ray irradiation
Hiroshi Abe, Tomomichi Ariga, Yutaka Watanabe (Tohoku University, Japan)
FDR2026-1108 Corrosion Behavior of Carbon Steel in Contact with Activated Carbon for Storage Container Material Screening
Yaoki Ise, Yuichi Fukaya (Tokyo Electric Power Company Holdings, Inc., Japan)
FDR2026-1131
(Presentation Only)
Development of a high-throughput system for evaluating corrosion risk
Mariam Basharat (National Institute for Materials Science, Japan), Xiao Deng, Gaku Imamura, Akihiro Okamoto (National Institute for Materials Science,NIMS Japan, Japan)
FDR2026-1064 Development of Laser Nuclear Decontamination Systems for Large-Scale Structures such as Suppression Chambers in Nuclear Reactor Decommissioning
Eisuke John Minehara (LDD Corporation, Japan)
 
Track 4-3. Metal waste recycling
Oct. 4 (Sun.), 13:20 - 14:20, J-Village Hall (B)
Chair: Anna Gubarevich (Institute of Science Tokyo, Japan)
Co-Chair: Yuya Takahashi (Toshiba, Japan)
FDR2026-1013 A New Treatment Facility for Contaminated Metals in Sweden
Arne Larsson, Michael Kendall, Francesco Corleoni (Cyclife Sweden AB, Sweden), Patrick Dupeyrat, Yuto Takae (Cyclife Japan K.K., Japan)
FDR2026-1044
(Presentation Only)
Radioactive Metal Recycle, Japanese Demonstration
Tomoaki Fujikawa (Marubeni America, United States)
FDR2026-1085 Study of a Method for Measuring Gross Beta in Molten Metal using Liquid Scintillation Counter
Azusa Ito (Japan Atomic Energy Agency, Japan), Misato Nagano (Tokyo Power Technology Ltd., Japan), Yamato Toyota, Madoka Usui (KAKEN Co.,Ltd., Japan), Soichi Sato, Mitsuru Sambongi (Japan Atomic Energy Agency, Japan)
 
Track 4-4. Processing and disposal
Oct. 4 (Sun.), 14:35 - 15:35, J-Village Hall (B)
Chair: Tomohiro Okamura (Institute of Science Tokyo, Japan)
Co-Chair: Jurgen Hansen (Belgoprocess, Belgium)
FDR2026-1015 Stabilization and Conditioning of Challenging Waste Through the DEM&MELT In-Can Melter
Kohei Shibata (Orano Japan, Japan), Regis Didierlaurent (Orano Recyclage, France), Caroline Michel, Damien Perret, Nicolas Bisbrouck, Eléonore Welcomme, Paloma Lauriano (CEA, France)
FDR2026-1068 Effect of spark plasma sintering on phase assemblage of U -bearing Synroc
Ryota Nakazawa (Institute of Science Tokyo, Japan), Lewis R. Blackburn (University of Sheffield, United Kingdom), Colin Boxall (Lancaster University , United Kingdom), Satofumi Maruyama (Tokyo City University, Japan), Ryosuke Maki (Okayama University of Science, Japan), Masahiko Nakase (Institute of Science Tokyo, Japan)
FDR2026-1020
(Presentation Only)
Proposal of Borehole Disposal System for the Fuel Debris in Fukushima Daiichi NPP
Taichi Sakai, Takumi Saito, Shunichi Okamoto (東京大学大学院, Japan)
 
Convention Hall
Track 1-7. Fuel Debris Formation and Structural Degradation Analysis
Oct. 4 (Sun.), 08:30 - 09:30, Convention Hall
Chair: Ryo Yokoyama (The University of Tokyo, Japan)
Matthew Kennedy (Fauske & Associates, United States)
FDR2026-1028
(Presentation Only)
Numerical Investigation of Two-Layer Shelf-Like Deposit Formation in Fukushima Daiichi Nuclear Power Station Unit-1 by MPS method
Xin Li (Japan Atomic Energy Agency, Japan), Akifumi Yamaji, Ikken Sato (Waseda University, Japan), Takuya Yamashita (Japan Atomic Energy Agency, Japan)
FDR2026-1011 Validation study of solidification-path-based inverse analysis with MASCA experiment
Ayumi Itoh (Insitute of Science Tokyo, Japan)
FDR2026-1060 Experimental Investigation on Circumferential Concrete Degradation in Fukushima-Daiichi Unit-1 Pedestal
Rei Yokoyama (Tokyo University of Science, Japan), Masahiro Furuya (Waseda University, Japan), Takashiro Akitsu (Tokyo University of Science, Japan), Chai Penghui, Akitoshi Hotta, Shinya Mizokami (Tokyo Electric Power Company Holdings, Inc., Japan)
 
Track 1-9. Fuel Debris Handling, Storage, and Criticality Safety
Oct. 4 (Sun.), 09:45 - 10:45, Convention Hall
Chair: Shinya Mizokami (TEPCO HD, Japan)
Andrew C. Morreale (Canadian Nuclear Laboratories, Canada)
FDR2026-1054
(Presentation Only)
Experimental Investigation of Filter Vented Fuel Debris Containers
Matthew Kennedy, Matrin Plys, Michael Lim, Peter Henkes (Fauske & Associates, United States)
FDR2026-1070
(Presentation Only)
The Three Mile Island Unit 2 Accident Damaged Reactor D&D Approach
Timothy Milner (EnergySolutions Inc., United States)
FDR2026-1099 Critical Experiment Analysis of the Modified STACY Core Simulating Criticality Characteristics of Pseudo-fuel Debris
Shigeki Shiba (Nuclear regulation authority , Japan)
 
Track 1-11. Reactor Investigation and Accident Progression Assessment at Fukushima Daiichi
Oct. 4 (Sun.), 11:00 - 12:00, Convention Hall
Chair: Andrew C. Morreale (Canadian Nuclear Laboratories, Canada)
Youichi Tsubota (Japan Atomic Energy Agency, Japan)
FDR2026-1071 Evaluation of reactor pressure vessel failure in Fukushima Daiichi Nuclear Power Station Unit 1 using thermal-fluid and structural analysis
Kenta Shimomura (Japan Atomic Energy Agency, Japan), Kazuaki Sakae, Akihiko Hashimoto (NDD, Japan), Takuya Yamashita (Japan Atomic Energy Agency, Japan)
FDR2026-1109
(Presentation Only)
Fukushima Daiichi Nuclear Power Station Unit 2 RPV Internal Investigation using Fiberscopes
Ryotaro Hagiwara (Tokyo Electric Power Company Holdings,Inc., Japan), Masato Mizokami, Kenichi Magariyama, Takuto Hanafusa, Akira Imafuku, Yoichi Sakuragi, Shinya Mizokami (Tokyo Electric Power Company Holdings, Inc, Japan)
FDR2026-1095
(Presentation Only)
Fukushima Daiichi Nuclear Power Station Unit 3 PCV Internal Investigation (non-submerged area) using Micro-drones
Daiki Hamakawa, Masato Mizokami, Satoru Nakashima, Shoichi Shinzawa, Shinya Mizokami (Tokyo Electric Power Company Holdings, Inc., Japan)
 
Track 1-13. Round Robin Characterization of Surrogate Fuel Debris for Fukushima Daiichi Decommissioning
Oct. 4 (Sun.), 13:20 - 14:20, Convention Hall
Chair: Yuji Kumagai (OECD NEA, France)
Penghui Chai (Tokyo Electric Power Company Holdings, Inc., Japan)
FDR2026-1122
(Presentation Only)
The OCED-NEA FACE Project Round Robin Debris Analysis Activity and the Benefits to Fukushima Daiichi Decommissioning Efforts
Andrew C. Morreale (Canadian Nuclear Laboratories, Canada), Mitchell T. Farmer (Argonne National Laboratories, United States), Joy L. Rempe (Rempe and Associates LLC, United States), Christophe Journeau (Commissariat à l’énergie atomique et aux énergies alternatives, France), Damian Peko (United States Department of Energy, United States)
FDR2026-1124
(Presentation Only)
Characterization of NEA/OECD FACE surrogate ex-vessel corium at CNL: Final results
Adam Cruse, Ernesto Geiger, James Buckley, Andrew C. Morreale (Canadian Nuclear Laboratories, Canada)
FDR2026-1118
(Presentation Only)
JRC Contribution to the RRDAA Round Robin Exercise: Characterization of a UO₂-Based Surrogate Fuel Debris Sample
Daniel Serrano Purroy (Joint Research Centre Karlsruhe, european Commission, Germany), Thierry Wiss, Antonio Bulgheroni, Philipp Poeml, Jean-Yves Colle (Joint Research Centre Karlsruhe - European Commission, Germany)
 
Track 1-15. Advanced Characterization of Prototypic and Surrogate Fuel Debris
Oct. 4 (Sun.), 14:35 - 15:35, Convention Hall
Chair: Marco Pellegrini (Politecnico di Milano, Italy)
Penghui Chai (Tokyo Electric Power Company Holdings, Inc., Japan)
FDR2026-1111
(Presentation Only)
Advanced correlative microscopic inspection and analysis of prototypic corium investigating the molten core concrete interaction (MCCI) with chemical analysis and phase identification.
Aidan Graham Gunn, Tamsin O'Reilly, Jamie Nanson, Mark Stitch (United Kingdom National Nuclear Laboratory, United Kingdom), Andrew Morreale (Canadian Nuclear Laboratories, Canada), Susan Morgan (United Kingdom National Nuclear Laboratory, United Kingdom)
FDR2026-1080 JAEA’s Contribution to the Round Robin Debris Analysis Activity within the OECD/NEA FACE Project
Toru Kitagaki, Masahide Takano (Japan Atomic Energy Agency, Japan), Satoshi Inose (Meiji university, Japan), Satoshi Nakamura, Yoshihiro Kitatsuji (Japan Atomic Energy Agency, Japan), Marc Barrachin (French Authority for Nuclear Safety and Radiation Protection, France), Andrew C. Morreale (Canadian Nuclear Laboratory, Canada)
 
Hikari Room
Track 1-8. CFD Modeling and Experiment of Aerosol Transport for Fuel Debris Retrieval
Oct. 4 (Sun.), 08:30 - 09:30, Hikari Room
Chair: Katsunari Oikawa (Tohoku University, Japan)
Shigeki Shiba (Nuclear regulation authority , Japan)
FDR2026-1098 CFD Investigation of Aerosol Resuspension and Transport During 1F Dismantling Operations
Thomas Gelain, Emmanuel Porcheron, Yohan Leblois (Autorité de Sûreté Nucléaire et de Radioprotection, France), Christophe Journeau (Commissariat à l'énergie atomique, France), Rémi Delalez (Onet Technologies, France)
FDR2026-1119 Development and Validation of a CFD Model for Aerosol Dispersion in Support of Laser Cutting Applications for Fukushima Fuel Debris Retrieval Process
Ravinder Kumar, Ruicong Xu, Wen Zhou, Zeeshan Ahmed, Yosuke Nishimura, Hanyu Wang, Avadhesh Kumar Sharma, Ryo Yokoyama, Shuichiro Miwa, Shunichi Suzuki, Koji Okamoto (The University of Tokyo Japan, Japan)
FDR2026-1087 Experimental Investigation of Ventilation-Driven Aerosol Dispersion for Source-Term Inference During Fukushima Daiichi Fuel Debris Retrieval
Ruicong Xu, Ravinder Kumar, Wen Zhou, Yosuke Nishimura, Hanyu Wang, Zeeshan Ahmed (The University of Tokyo, Japan), Avadhesh Kumar Sharma (Vellore Institute of Technology, India), Ryo Yokoyama, Shuichiro Miwa, Shunichi Suzuki, Koji Okamoto (The University of Tokyo, Japan)
 
Track 1-10. Materials Thermodynamics and Degradation for Fukushima Daiichi Decommissioning
Oct. 4 (Sun.), 09:45 - 10:45, Hikari Room
Chair: Kenichiro Nozaki (TEPCO SYSTEMS CORPORATION, Japan)
Takeshi Nishimura (TEPCO Systems Coporation, Japan)
FDR2026-1081
(Presentation Only)
Thermodynamic modeling of U-Fe-O system
Katsunari Oikawa (Tohoku University, Japan)
FDR2026-1102
(Presentation Only)
Evaluation of SCC Susceptibility of Carbon Steel under Simulated PCV Environments Relevant to Fukushima-Daiichi Decommissioning
Yutaka Watanabe, Hiroshi Abe, Katsuki Onuma, Eri Oikawa (Tohoku University, Japan), Yaoki Ise, Yuichi Fukaya (Tokyo Electric Power Company Holdongs, Japan)
FDR2026-1039 Study on method for analyzing aging factors affecting radioactive material release risk at Fukushima Daiichi Nuclear Power Plant
Tomo Sunami, Takanori Kitada, Satoshi Takeda (The University of Osaka, Japan)
 
Track 1-12. Computational Analysis of Fukushima Daiichi Accident Phenomena
Oct. 4 (Sun.), 11:00 - 12:00, Hikari Room
Chair: Toru Kitagaki (JAEA, Japan)
Aidan Graham Gunn (United Kingdom National Nuclear Laboratory, United Kingdom)
FDR2026-1019
(Presentation Only)
Expanding the Capability of the ASTST VER3.5 System Thermal Hydraulic and SCDAPSIM Modeling Options to Support the Fukushima Daiichi Decommissioning R&D Analysis and Assessment
Raimon Pericas (Innovative Systems softwre, United States), Chris Allison (Innovative systems software, United States)
FDR2026-1029
(Presentation Only)
GOTHIC Analysis of Aerosol Deposition Behavior in the Ventilation Ducts at Fukushima Daiichi NPP Unit 3
Kenichiro Nozaki, Takeshi Nishimura, Shoichi Suehiro (TEPCO SYSTEMS CORPORATION, Japan), Penghui Chai, Masato Mizokami, Ryotaro Hagiwara, Shunsuke Sekita, Mutsumi Hirai, Noriaki Nakashima, Shinya Mizokami (Tokyo Electric Power Company Holdings, Inc., Japan)
FDR2026-1032 Estimating a Hydrogen Explosion Scenario in the Unit 4 Reactor Building at Fukushima Daiichi NPP
Takeshi Nishimura, Kenichiro Nozaki, Shoichi Suehiro (TEPCO SYSTEMS CORPORATION, Japan), Penghui Chai, Masato Mizokami, Ryotaro Hagiwara, Syunsuke Sekita, Mutsumi Hirai, Noriaki Nakashima, Shinya Mizokami (Tokyo Electric Power Company Holdings, Inc., Japan), Masatake Yoshida, Shohei Hashimoto, Shuichi Ishikura, Tatsuya Kumaki (Explosion Research Institute, Inc., Japan)
 
 
Oct. 5 (Mon.)
J-Village Hall (A)
Track 3-7. Radiation Monitoring and Field Measurement Technologies
Oct. 5 (Mon.), 08:50 - 09:50, J-Village Hall (A)
Chair: Yuta Terasaka (JAEA, Japan)
Miyuki Sasaki (Japan Atomic Energy Agency, Japan)
FDR2026-1062
(Presentation Only)
Development of a GPS scintillator-based gamma spectrometer and measurement of contaminated soil.
Yuki Morishita (Japan Atomic Energy Agency, Japan), Tsutomu Yamada, Takamasa Nakasone (Japan Radiation Engineering , Japan), Miyuki Sasaki, Tomohisa Abe (Japan Atomic Energy Agency, Japan), Marina Kanno (PESCO Co., Ltd., , Japan), Kengo Kajiyama (Nuclear Engineering Co.,Ltd. , Japan)
FDR2026-1066 Radiation measurement systems using ISOCS supplied by MTKK since the Great East Japan Earthquake and future prospects
Atsuo Suzuki, Dante Rene Nakazawa, Hiroshi Seki, Yosuke Suga, Kohta Nagai, Helene Lefebvre (Mirion Technologies (Canberra) KK, Japan)
FDR2026-1030 Development of a Remote Radioactivity Monitoring System Using Airborne Particulate Monitor and Gamma-Ray Dose Rate Meter
Yusuke Yanagawa, Takeshi Kasai, Shinichi Otsuki, Yasushi Nakano, Yoshitsugu Osawa (Mitsubishi Electric Plant Engineering Co., Ltd., Japan), Masateru Hayashi, Makoto Sasano (Mitsubishi Electric Co., Ltd., Japan)
 
J-Village Hall (B)
Track 4-5. Water decontamination and secondary waste
Oct. 5 (Mon.), 08:30 - 09:50, J-Village Hall (B)
Chair: Timothy Milner (EnergySolutions Inc., United States)
Co-Chair: Yoshikazu Koma (Japan Atomic Energy Agency, Japan)
FDR2026-1074 Evaluation of Alpha Radionuclide Adsorbents Using Actual Stagnant Water from Fukushima Daiichi NPS
Shinya Oyama (Hitachi GE Vernova Nuclear Energy, Ltd., Japan), Akira Tsutsumiguchi (Hitachi, Ltd., Japan), Keiji Iwata (Tousou Mirai Technology Co. Ltd., Japan)
FDR2026-1083 Analysis of secondary waste from water treatment process at Okuma Analysis and Research Center (JAEA)
Khoai Van Do, Ayako Nitta, Noriyasu Kodaka, Riku Kikuchi, Kenta Katsuki, Takuma Sakano, Hibiki Otsuki, Kosuke Tanaka, Takahiro Furuse (Japan Atomic Energy Agency, Japan)
FDR2026-1031 Whitlockite-based phosphate ceramics for ALPS carbonate slurry waste immobilization: alpha-radionuclide incorporation and aqueous durability
Anna Gubarevich, Katsumi Yoshida, Amirun Mohamad, Shintaro Yasui, Kenji Takeshita (Institute of Science Tokyo, Japan)
FDR2026-1082 FDR conference From Lab to Industrial Scale: Pyrolysis of Radioactive Spent Resins in the PRIME Installation
Jurgen Hansen (Belgoprocess, Belgium)
 
Convention Hall
Track 1-17. International Collaborative Research on Fukushima Daiichi Accident Analysis and MCCI
Oct. 5 (Mon.), 08:30 - 09:50, Convention Hall
Chair: Akifumi Yamaji (Waseda Univ., Japan)
Isamu Sato (Tokyo City Univ., Japan)
FDR2026-1007
(Presentation Only)
International Collaborative Research on Fukushima Daiichi: Achievements, Ongoing Efforts, and the Post-FACE
Yuji Kumagai (OECD NEA, France)
FDR2026-1129
(Presentation Only)
Analytical Assessment of Dry MCCI Modeling in the OECD/NEA FACE Project
Marco Pellegrini (Politecnico di Milano, Italy)
FDR2026-1069 An Approach to Evaluate the Damage Mechanism of the Pedestal Wall in Unit 1 at the Fukushima Daiichi Nuclear Power Station
Penghui Chai, Akitoshi Hotta, Masato Mizokami, Shinya Mizokami (Tokyo Electric Power Company Holdings, Inc., Japan)
FDR2026-1004 Advances in an Elastoplastic MK-SPH Method for Estimating Concrete Degradation in Fukushima Daiichi Unit 1: Verification and Validation of Plastic Flow and Crack Propagation
Ryo Yokoyama, Shunichi Suzuki, Koji Okamoto (The University of Tokyo, Japan), Akitoshi Hotta, Penghui Chai, Masato Mizokami, Shinya Mizokami (Tokyo Electric Power Company Holdings, Inc. , Japan)
 
Hikari Room
Track 2-6. Robot Technology and Remote Control System (6)
Oct. 5 (Mon.), 08:30 - 09:50, Hikari Room
Chair: Taichi Yamada (JAEA, Japan)
Kenji Suzuki (Kanagawa University, Japan)
FDR2026-1002 Development of a rotary piston type water hydraulic motor and improvement of rotation performance
Kenji Suzuki (Kanagawa University, Japan)
FDR2026-1034 From Tube to Digital: The Transition to Fully Digital High-Radiation Inspection
Marcus Ruediger Jocham (ISEC Visatec GmbH, Germany)
FDR2026-1105
(Presentation Only)
Development of Investigation Technology of Inside of RPV (Development of Access-from-Top/Side Investigation Method)
Haruto Chikura, Toshiyuki Ito, Akira Fugane, Mitsuhiro Hinosawa, Takumi Watanabe (Tousou Mirai Technology, Japan)