Oral presentation

[2C01-08] Decommissioning Technology for Fukushima 1

Tue. Mar 17, 2020 10:00 AM - 12:10 PM Room C (Lecture Bildg. L 1F L-2)

Chair:Hideharu Takahashi(Tokyo Tech)

+Add all to schedule

10:00 AM - 10:15 AM

[2C01] Radiation resistance of gel for debris coating

*Hiroaki Muta¹, Kohki Hibino¹, Yuji Ohishi¹, Yoko Akiyama¹ (1. Osaka Univ.)

10:15 AM - 10:30 AM

[2C02] Study on Applicability of Grouting Materials for Retrieval of Fuel Debris

*Katsunori Kurozawa¹, Shunichi Suzuki¹ (1. Univ. of Tokyo)

10:30 AM - 10:45 AM

[2C03] Piping system, risk management based on wall thinning monitoring and prediction - PYRAMID -

(1)Evaluation of mass transfer coefficient and corrosion rate under solid-liquid multiphase flow

*Ryota Nakagawa¹, Hiroshi Abe¹, Yutaka Watanabe¹ (1. Tohoku Univ)

10:45 AM - 11:00 AM

[2C04] Piping system, risk management based on wall thinning monitoring and prediction - PYRAMID -

(2)Experimental investigation of influence of solid particle properties upon a solid-liquid two-phase flow by flow visualization

*Shinji Ebara¹ (1. Tohoku Univ.)

11:00 AM - 11:15 AM

[2C05] Piping system, risk management based on wall thinning monitoring and prediction - PYRAMID -

(3)Evaluation of Solid Particle Characteristic on Pipe Wall Thinning by Flow Accelerated Corrosion

*Shun Watanabe¹, Ryo Morita¹ (1. CRIEPI)

11:15 AM - 11:30 AM

[2C06] Piping system, risk management based on wall thinning monitoring and prediction - PYRAMID -

(4)Improvement of reliability of pipe wall thickness measuremnt by electromagnetic acoustic transducers

*Tetsuya Uchimoto¹, Toshiyuki Takagi¹, Hongjun Sun¹, Ryoichi Urayama¹, Akitoshi Tezuka¹ (1. Tohoku Univ.)

11:30 AM - 11:45 AM

[2C07] Piping system, risk management based on wall thinning monitoring and prediction - PYRAMID -

(5)Roughness measurement based on frequency analysis of ultrasonic wave reflected on rough surface

*Hiroyuki Nakamoto^1,3, Philippe Guy², Toshiyuki Takagi^3,4, Tetsuya Uchimoto^3,4 (1. Kobe Univ., 2. INSA de Lyon, 3. Tohoku Univ., 4. ELyTMaX UMI 3757)

11:45 AM - 12:00 PM

[2C08] Piping system, risk management based on wall thinning monitoring and prediction - PYRAMID -

(6)Evaluation of Probability of Failure using Bayesian Method with multi-point piping inner surface monitoring

*Atsushi Iwasaki¹, Shouta Sekizuka¹ (1. Gunma Univ.)

Time reserved for Chair （12:00 PM - 12:10 PM）

Oral presentation

[2C09-13] Decommissioning Technology for Fukushima 2

Tue. Mar 17, 2020 2:45 PM - 4:05 PM Room C (Lecture Bildg. L 1F L-2)

Chair:Ken-Ichi Tanaka(IAE)

+Add all to schedule

2:45 PM - 3:00 PM

[2C09] Assembling Analysis system for behavior of water-containing fuel debris

*Toru Ogawa¹ (1. JEAE)

3:00 PM - 3:15 PM

[2C10] Development status of hydrogen dispersion and combustion simulation in a storage container for fuel debris

*Atsuhiko Terada¹, Thwe Thwe Aung¹, Ryutaro Hino¹, Ryuji Nagaishi¹ (1. Japan Atomic Energy Agency)

3:15 PM - 3:30 PM

[2C11] On-site Fukushima fuel debris U/Pu-contents analysis by Portable X-ray/Neutron Sources

*Mitsuru Uesaka¹, Jian Yang², Tomooki Shiba³ (1. University of Tokyo, Nuclear Professional School, 2. University of Tokyo, Department of Nuclear Engineering and Management, 3. Japan Atomic Energy Agency)

3:30 PM - 3:45 PM

[2C12] Comprehensive prediction on the PCV fuel debris characteristics considering accident scenarios

*Ryo Yokoyama¹, Shunichi Suzuki¹, Koji Okamoto¹, Masaru Harada² (1. Univ. of Tokyo, 2. TEPCO HD)

3:45 PM - 4:00 PM

[2C13] Study on site remediation scenarios and site reuse at Fukushima Daiichi Nuclear Power Station

*Masanori Nakano¹, Daisuke Kawasaki¹, Satoshi Yanagihara¹ (1. Univ. of Fukui)

Time reserved for Chair （4:00 PM - 4:05 PM）

Oral presentation

[2C14-18] Dismantling and Decontamination Technology

Tue. Mar 17, 2020 4:05 PM - 5:25 PM Room C (Lecture Bildg. L 1F L-2)

Chair:Toru Ogawa(JEAE)

+Add all to schedule

4:05 PM - 4:20 PM

[2C14] Fundamental Study on Mechanism of Blasting Decontamination Device for Small Diameter Pipe

*Hideharu Takahashi¹, Sota Yamamoto¹, Hayato Taniguchi², Akihiko Kawashima², Hiroshi Takahashi³, Hiroshige Kikura¹ (1. Tokyo Institute of Technology, 2. Shintokogio, Ltd., 3. Fuji Furukawa Engineering & Construction Co.,Ltd.)

4:20 PM - 4:35 PM

[2C15] High speed laser decommissioning technology for combined materials of concrete and iron

*Eisuke John Minehara¹, Mitsuhiro Sato², Kazuya Kikawada², Hisashi Imai², Tetsuo Uno², Shuichi Yamaguchi², Takashi Hasegawa¹ (1. LDD, 2. HAZAMA ANDO CORPORATION)

4:35 PM - 4:50 PM

[2C16] Clearance measurement operation and challenges for the future in Fugen.

*Kosuke Yamamoto¹, shinji Kawagoe¹, Daisuke Tsuchida¹, Naoto Mori¹ (1. JAEA)

4:50 PM - 5:05 PM

[2C17] Study on Thermal Decomposition Behaviors of Sodium Hydride with TG-DTA

*Munemichi Kawaguchi¹ (1. JAEA)

5:05 PM - 5:20 PM

[2C18] Analysis of technical problems on decommissioning work-site activities

*Kazuhiro Tanabe^1,9, Satoshi Yanagihara^2,9, Yukihiro Iguchi^3,9, Hiroaki Takiya^3,9, Isao Narikawa^4,9, Hiroaki Kobashi^5,9, Yoshiharu Aoyama^6,9, Keiichi Iida^7,9, Akihiro Yanagida^9,7, Kazunari Murayama^8,9 (1. Kanden Plant Corporetion, 2. Fukui University, 3. Japan Atomic Energy Agency, 4. TOKYO ENERGY & SYSTEMS INC., 5. IHI Corporation, 6. KOKEN LTD., 7. Nissin Kiko Co.,LTD., 8. MACOHO CO.,LTD., 9. Association for Nuclear Decommissioning Study)

Time reserved for Chair （5:20 PM - 5:25 PM）

Oral presentation

[3C01-05] Decommissioning Technology for Fukushima 3

Wed. Mar 18, 2020 10:00 AM - 11:20 AM Room C (Lecture Bildg. L 1F L-2)

Chair:Daisuke Kawasaki(Univ. of Fukui)

+Add all to schedule

10:00 AM - 10:15 AM

[3C01] Fundamental study on fragmentation of fuel debris using high-voltage pulse crushing

*Sayo Suga¹, Atsushi Iizuka¹, Etsuro Shibata¹ (1. Tohoku Univ.)

10:15 AM - 10:30 AM

[3C02] Analysis of particles generated by laser processing and development of their nuclide identification methodology (2)

(1)Observation of fine particles produced from laser irradiated metals, ceramics and concrete

*Hiroyuki Daido¹, Tomonori Yamada², Chikara Ito², Masabumi Miyabe², Takuya Shibata², Hiroyuki Furukawa¹, Shuichi Hasegawa³ (1. Institute for Laser Technology, 2. JAEA, 3. Univ. Tokyo)

10:30 AM - 10:45 AM

[3C03] Analysis of particles generated by laser processing and development of their nuclide identification methodology (2)

(2)Development of External Cavity Laser Diode System for Laser Spectroscopic Nuclide Analysis of microparticles

*Yusuke Watanabe¹, Daisuke Ishikawa¹, Shuichi Hasegawa¹, Hiroyuki Daido², Tomonori Yamada³, Chikara Ito³, Masabumi Miyabe³, Takuya Shibata³ (1. Univ. of Tokyo, 2. Institute for Laser Technology, 3. Japan Atomic Energy Agency)

10:45 AM - 11:00 AM

[3C04] Investigation Results on Deposits Accumulating over the Pedestal Bottom of PCV of Fukushima Daiichi Nuclear Power Station Unit 2

*Tessai Sugiura¹, Chiari Shimizu², Naoya Sakamoto², Naoto Kume², Kiyoshi Haruna³ (1. TOSHIBA ESS, Isogo Nuclear Engineering Center, 2. TOSHIBA ESS, Energy Systems R&D Center, 3. TEPCO, Fukushima Daiichi D&D Engineering Company)

11:00 AM - 11:15 AM

[3C05] 3D structural reconstruction of working space using image sequence for supporting survey task of decommissioning

*Toshihide Hanari¹, Kuniaki Kawabata¹, Keita Nakamura², Keitaro Naruse² (1. JAEA, 2. Univ. of Aizu)

Time reserved for Chair （11:15 AM - 11:20 AM）

Oral presentation

[3C06-08] Decommissioning Technology for Fukushima 4

Wed. Mar 18, 2020 11:20 AM - 12:10 PM Room C (Lecture Bildg. L 1F L-2)

Chair:Hiroaki Muta(Osaka Univ.)

+Add all to schedule

11:20 AM - 11:35 AM

[3C06] Risk-based optimization of decommissioning of severe accident reactor:FEM analysis of structural integrity

*Kohei Mizuta¹, Toshiki Nakasuji¹, Kazunori Morishita¹, Takayuki Aoki² (1. Kyoto Univ., 2. Tohoku Univ.)

11:35 AM - 11:50 AM

[3C07] Reactor containment vessel sealing method using steam engine and radiation shielding and sealing method from reactor

格納容器内の凍結

*Yasufumi Kitamura¹, Haruo Morisihge¹, Yosuke Yamashiki¹, Shigemi Morishige¹ (1. Fukushima Nuclear Accident Countermeasures Review Group)

11:50 AM - 12:05 PM

[3C08] Fukushima Daiichi Nuclear Power Plant: Pros and cons of contaminated water released into the ocean and future plans

アイス工法を用いた完全な汚染水解消

*Yosuke Yamashiki¹, Haruo Morishige², Shigemi Morishige², Yasufumi Kitamura² (1. Kyoto Univ., 2. Fukushima Nuclear Accident Countermeasures Review Group)

Time reserved for Chair （12:05 PM - 12:10 PM）

Oral presentation

[3C09-13] Analysis, Evaluation, System Development

Wed. Mar 18, 2020 2:45 PM - 4:00 PM Room C (Lecture Bildg. L 1F L-2)

Chair:Masashi Tezuka(JAEA)

+Add all to schedule

2:45 PM - 3:00 PM

[3C09] Influence of ⁵⁹Ni radioactivity on decommissioning (3)

*hideo ezure¹ (1. NAIS)

3:00 PM - 3:15 PM

[3C10] Radioactivity calculation of JPDR biological shielding concrete and examination of radioactivity evaluation technique for trench-type disposal

*Mami Kochiyama¹, Akihiro Sakai¹, Chikara Konno¹ (1. JAEA)

3:15 PM - 3:30 PM

[3C11] Production of MAXS/AD-2017 multigroup library and its test

*Chikara Konno¹, Mami Kochiyama¹ (1. JAEA)

3:30 PM - 3:45 PM

[3C12] Study on Waste Management Scenarios for Decommissioning Nuclear Power Plant

*Tatsuro Ishikuro¹, Takashi Tanaka¹, Yuuki Tsuhara¹, Satoshi Yanagihara² (1. Kanden Power-Tech, 2. Univ. of Fukui)

3:45 PM - 4:00 PM

[3C13] The data structure for the plant characterization in the planning of decommissioning for nuclear power plant

*Ken-ichi Tanaka¹, Yusuke Shimizu², Kazuma Mizukoshi², Isao Yamaoka³ (1. IAE, 2. NEL, 3. JANSI )

Sessions

V. Nuclear Fuel Cycle and Nuclear Materials » 505-3 Decommissioning Technology of Nuclear Facilities

[2C01-08] Decommissioning Technology for Fukushima 1

(1)Evaluation of mass transfer coefficient and corrosion rate under solid-liquid multiphase flow

(2)Experimental investigation of influence of solid particle properties upon a solid-liquid two-phase flow by flow visualization

(3)Evaluation of Solid Particle Characteristic on Pipe Wall Thinning by Flow Accelerated Corrosion

(4)Improvement of reliability of pipe wall thickness measuremnt by electromagnetic acoustic transducers

(5)Roughness measurement based on frequency analysis of ultrasonic wave reflected on rough surface

(6)Evaluation of Probability of Failure using Bayesian Method with multi-point piping inner surface monitoring

[2C09-13] Decommissioning Technology for Fukushima 2

[2C14-18] Dismantling and Decontamination Technology

[3C01-05] Decommissioning Technology for Fukushima 3

(1)Observation of fine particles produced from laser irradiated metals, ceramics and concrete

(2)Development of External Cavity Laser Diode System for Laser Spectroscopic Nuclide Analysis of microparticles

[3C06-08] Decommissioning Technology for Fukushima 4

格納容器内の凍結

アイス工法を用いた完全な汚染水解消

[3C09-13] Analysis, Evaluation, System Development

Authentication