Oral presentation

[2D07-12] Decommissioning Technology for Fukushima 1

Thu. Sep 17, 2020 2:45 PM - 4:30 PM Room D (Zoom room 4)

Chair:Taro Shimada(JAEA)

2:45 PM - 3:00 PM

[2D07] Estimation of concrete waste from Fukushima Daiichi Nuclear Power Plant

*Runa Takenaka¹, Naoko Watanabe¹, Daisuke Kawasaki², Shinichiro Uematsu¹, Tamotsu Kozaki¹ (1. Hokkaido Univ., 2. Univ. of Fukui)

3:00 PM - 3:15 PM

[2D08] Development of the radiation resistant remote vibration sensing equipment for the reactor decommissioning

*shiro jitsukawa¹ (1. National Institute of Technology Fukushima College)

3:15 PM - 3:30 PM

[2D09] Development of ultramicro analysis technology for fuel debris analysis

(1)Outline of the Research Program and Collaborative Laboratory

*Yoshihiro Sekio¹, Yasuhiro Iwamoto¹, Maho Hamada¹, Koji Maeda¹, Toru Higuchi³, Tatsuya Suzuki², Kazuya Idemitsu⁴, Kenji Konashi⁵, Yasuyoshi Nagai⁵ (1. JAEA, 2. Nagaoka Univ. of Tech., 3. NFD, 4. Kyushu Univ., 5. Tohoku Univ.)

3:30 PM - 3:45 PM

[2D10] Development of ultramicro analysis technology for fuel debris analysis

(2)Study on dissolution of debris, nuclide separation and analyses

*Tatsuya Suzuki¹, Ma ZhuoRan¹, Fauzia Hanum Ikhwan¹, Yoshiya Homma², Chikage Abe², Kenji Konashi² (1. Nagaoka Univ. of Tech., 2. Tohoku Univ.)

3:45 PM - 4:00 PM

[2D11] Development of ultramicro analysis technology for fuel debris analysis

(3)Preparation of simulated fuel debris

*Atsushi Ouchi¹, Toru Higuti¹, Yusuke Miura¹, Kenji Konashi² (1. NFD, 2. Tohoku Univ)

4:00 PM - 4:15 PM

[2D12] Development of ultramicro analysis technology for fuel debris analysis

(4)Study of fuel debris stability for geological disposal (plan)

*Kazuya Idemitsu¹, Yaohiro Inagaki¹, Tatsumi Arima¹, Keisuke Yoshida¹ (1. Kyushu University)

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

Oral presentation

[2D13-17] Decommissioning Technology for Fukushima 2

Thu. Sep 17, 2020 4:30 PM - 6:00 PM Room D (Zoom room 4)

Chair:Tatsuya Suzuki(Nagaoka Univ. of Tech.)

4:30 PM - 4:45 PM

[2D13] R&D Status on a Device to Transport Fuel Debris at Fukushima Daiichi Nuclear Power Plant

*Tessai Sugiura^1,2, Fujio Terai^1,2, Kenji Kurihara^1,2, Yasuhiro Yuguchi^1,2 (1. IRID, 2. Toshiba Energy Systems & Solutions Corp.)

4:45 PM - 5:00 PM

[2D14] Development for Dust Evaluation Method during Fuel Debris Retrieval Operations

(1)Overview of the Plan as well as the Examination of dust evaluation test system

*Yasuhiro Yuguchi^1,2, Chiaki Shimoda^1,2, Jun Suzuki^1,2, Kenji Kurihara^1,2 (1. IRID, 2. TOSHIBA ESS)

5:00 PM - 5:15 PM

[2D15] Development for Dust Evaluation Method during Fuel Debris Retrieval Operations

(2)Estimation for dusts generated by disc saw cutting

*chiaki SHIMODA^1,2, yasuhiro YUGUCHI^1,2, jun SUZUKI^1,2, kenji KURIHARA^1,2 (1. IRID, 2. TOSHIBA ESS)

5:15 PM - 5:30 PM

[2D16] Analysis of particles generated by laser processing and development of their nuclide identification methodology (3)

(1)Characteristic of fine particles behavior produced from laser irradiation

*Tomonori Yamada¹, Hiroyuki Daido², Chikara Ito¹, Masabumi Miyabe¹, Takuya Shibata¹, Shuichi Hasegawa³ (1. JAEA, 2. ILT, 3. Univ. of Tokyo)

5:30 PM - 5:45 PM

[2D17] Analysis of particles generated by laser processing and development of their nuclide identification methodology (3)

(2)Consideration of fine particle production from laser irradiated metals, ceramics and concrete materials

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

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

Oral presentation

[3D01-06] Decommissioning Technology for Fukushima 3

Fri. Sep 18, 2020 10:00 AM - 11:45 AM Room D (Zoom room 4)

Chair:Daisuke Kawasaki(Univ. of Fukui)

10:00 AM - 10:15 AM

[3D01] Piping system, risk management based on wall thinning monitoring and prediction -PYRAMID-

(7)Experimental evaluation of effect of solid particle on carbon steel corrosion under flow

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

10:15 AM - 10:30 AM

[3D02] Piping system, risk management based on wall thinning monitoring and prediction -PYRAMID-

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

*shinji ebara¹ (1. Tohoku University)

10:30 AM - 10:45 AM

[3D03] Piping system, risk management based on wall thinning monitoring and prediction - PYRAMID -

(9)Effect of solid particle on corrosion under solid-liquid multiphase flow

*Shun Watanabe¹, Ryo Morita¹ (1. CRIEPI)

10:45 AM - 11:00 AM

[3D04] Piping system, risk management based on wall thinning monitoring and prediction -PYRAMID-

(10)Monitoring of pipe wall thinning by electromagnetic acoustic resonance method

*Tetsuya Uchimoto¹, Gildas Diguet¹, Toshiyuki Takagi¹, Mitsuo Hashimoto¹, Ryoichi Urayama¹ (1. Tohoku University)

11:00 AM - 11:15 AM

[3D05] Piping system, risk management based on wall thinning monitoring and prediction -PYRAMID-

(11)Effect on Broadband Ultrasound by Reflection on Rough Surface with Periodic flaws

*Hiroyuki Nakamoto¹, Philippe Guy², Toshiyuki Takagi^3,4, Tetsuya Uchimoto^3,4 (1. Kobe Univ., 2. INSA de Lyon, 3. Tohoku Univ., 4. ELyTMaX UMI 3757)

11:15 AM - 11:30 AM

[3D06] Piping system, risk management based on wall thinning monitoring and prediction - PYRAMID -

(12)Evaluation of Thinning Progress using Bayesian Method with multi-point piping inner surface monitoring

*Atsushi Iwasaki¹, Genta Takahashi¹ (1. Gunma Univ.)

Time reserved for Chair （11:30 AM - 11:45 AM）

Oral presentation

[3D07-10] Evaluation of Contamination Distribution

Fri. Sep 18, 2020 2:45 PM - 4:00 PM Room D (Zoom room 4)

Chair:Kazuya Idemitsu(Kyushu Univ.)

2:45 PM - 3:00 PM

[3D07] Prediction of infiltrated contamination by C-14 in a concrete from reference data

*Norikazu Kinoshita¹, Kazuaki Kosako¹, Hitoshi Nakashima¹, Kazuyuki Torii¹, Yuki Sasaki¹, Hiroshi Kimura¹ (1. Shimizu)

3:00 PM - 3:15 PM

[3D08] Development of dose evaluation method for confirmation of completion of decommissioning

(1)Development of radioactivity distribution combined with scoping survey and sampling measurement

*Taro Shimada¹, Nobuhide Nabekura², Kazuji Miwa¹, Seiji Takeda¹ (1. JAEA, 2. V.I.C.)

3:15 PM - 3:30 PM

[3D09] Development of dose evaluation method for confirmation of completion of decommissioning

(2)Identification of radiocesium origin using ¹³⁵Cs/¹³⁷Cs isotope ratio

*Asako Fujiwara Shimada¹, Takehiko Tsukahara², Masao Nomura², Min Soek Kim², Taro Shimada¹, Seiji Takeda¹, Tetsuji Yamaguchi¹ (1. JAEA, 2. Tokyo Tech)

3:30 PM - 3:45 PM

[3D10] Development of dose evaluation method for confirmation of completion of decommissioning

(3)Development of dose estimation method considering changes in surface soil contamination distribution

*kazuji miwa¹, masakazu namekawa², taro shimada¹, seiji takeda¹ (1. JAEA, 2. NAIS)

Time reserved for Chair （3:45 PM - 4:00 PM）

Oral presentation

[3D11-14] Dismantling and Decontamination Technology

Fri. Sep 18, 2020 4:00 PM - 5:15 PM Room D (Zoom room 4)

Chair:Masashi Tezuka(JAEA)

4:00 PM - 4:15 PM

[3D11] Fundamental Study on Mechanism of Blasting Decontamination Device for Small Diameter Pipe (Part 2)

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

4:15 PM - 4:30 PM

[3D12] Study on waste management scenarios for NPP decommissioning

Effect of interim storage on the mass of low-level radioactive waste

*Keisuke Komatsu¹, Daisuke Kawasaki¹, Satoshi Yanagihara¹ (1. Univ. of Fukui)

4:30 PM - 4:45 PM

[3D13] Development of a simple dismantling cost estimation method applicable to nuclear facilities (excluding power reactor) prior to operation

*Nobuo Takahashi¹, Ryosuke Sakaba², Yoshihiro Meguro¹ (1. JAEA, 2. Inspection Development Co.)

4:45 PM - 5:00 PM

[3D14] Production of Multigroup Libraries for ORIGEN in SCALE6.2 from JENDL/AD-2017

*Chikara Konno¹, Mami Kochiyama¹ (1. JAEA)

Time reserved for Chair （5:00 PM - 5:15 PM）

Sessions

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

[2D07-12] Decommissioning Technology for Fukushima 1

(1)Outline of the Research Program and Collaborative Laboratory

(2)Study on dissolution of debris, nuclide separation and analyses

(3)Preparation of simulated fuel debris

(4)Study of fuel debris stability for geological disposal (plan)

[2D13-17] Decommissioning Technology for Fukushima 2

(1)Overview of the Plan as well as the Examination of dust evaluation test system

(2)Estimation for dusts generated by disc saw cutting

(1)Characteristic of fine particles behavior produced from laser irradiation

(2)Consideration of fine particle production from laser irradiated metals, ceramics and concrete materials

[3D01-06] Decommissioning Technology for Fukushima 3

(7)Experimental evaluation of effect of solid particle on carbon steel corrosion under flow

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

(9)Effect of solid particle on corrosion under solid-liquid multiphase flow

(10)Monitoring of pipe wall thinning by electromagnetic acoustic resonance method

(11)Effect on Broadband Ultrasound by Reflection on Rough Surface with Periodic flaws

(12)Evaluation of Thinning Progress using Bayesian Method with multi-point piping inner surface monitoring

[3D07-10] Evaluation of Contamination Distribution

(1)Development of radioactivity distribution combined with scoping survey and sampling measurement

(2)Identification of radiocesium origin using 135Cs/137Cs isotope ratio

(3)Development of dose estimation method considering changes in surface soil contamination distribution

[3D11-14] Dismantling and Decontamination Technology

Effect of interim storage on the mass of low-level radioactive waste

Authentication

(2)Identification of radiocesium origin using ¹³⁵Cs/¹³⁷Cs isotope ratio