Oral presentation

[1M01-04] Atmospheric Dispersion

Wed. Sep 8, 2021 10:45 AM - 12:00 PM Room M

chair: Kimiaki Saito (JAEA)

10:45 AM - 11:00 AM

[1M01] Performance evaluation of atmospheric dispersion model ensemble for plume arrival prediction performance near the nuclear power plant

*Yusaku Kiriyama¹, Hiromi Yamazawa¹, Jun Moriizumi¹ (1. Nagoya Univ.)

11:00 AM - 11:15 AM

[1M02] Development of an estimation method of concentration distribution and release amount of radionuclide discharged to the atmosphere using gamma-ray imaging

(4)A prototype of estimation method

*Haruyasu Nagai¹, Yoshihiro Furuta², Daiki Satoh¹, Hiromasa Nakayama¹ (1. JAEA, 2. CLEAR-PULSE )

11:15 AM - 11:30 AM

[1M03] Development of an estimation method of concentration distribution and release amount of radionuclide discharged to the atmosphere using gamma-ray imaging

(5)A simple atmospheric dispersion calculation using meteorological observation data

*Hiromasa Nakayama¹, Daiki Satoh¹, Haruyasu Nagai¹ (1. JAEA)

11:30 AM - 11:45 AM

[1M04] Examination of error factors in dry deposition of atmospheric dispersion calculation for the Fukushima Daiichi nuclear power plant accident

*Ryota Ii¹, Hiromi Yamazawa¹, Jun Moriizumi¹ (1. Nagoya Graduate School)

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

Oral presentation

[1M05-12] Environmental Radioactivity 1

Wed. Sep 8, 2021 2:45 PM - 5:00 PM Room M

chair: Jun Moriizumi (Nagoya Univ.)

2:45 PM - 3:00 PM

[1M05] Characterization and Investigation on Long-term Stability of Sodium Activated Metakaolin-Based Geopolymers

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

3:00 PM - 3:15 PM

[1M06] The preliminary methodology of Cs desorption and capture from 2:1 clay minerals using Argon plasmaⅡ

*Yutaka Nishimura¹, Glenn Harvel², Fumihito Mishima¹, Naoki Nomura¹, Shigehiro Nishijima¹, Takeyoshi Sunagawa¹ (1. FUT, 2. Ontario Tech Univ.)

3:15 PM - 3:30 PM

[1M07] Investigation on distribution of radioactive substances in Fukushima

(1)Research proposal on quantitative estimation of site-specific temporal change in air dose rate

*Kimiaki Saito¹ (1. JAEA)

3:30 PM - 3:45 PM

[1M08] Investigation on distribution of radioactive substances in Fukushima

(2)Development of measurement techniques on radiation distribution based on KURAMA-II

*Minoru Tanigaki¹ (1. Kyoto Univ.)

3:45 PM - 4:00 PM

[1M09] Investigation on distribution of radioactive substances in Fukushima

(3)Investigation on the distribution of radioactive cesium deposition densities using ASURA

*Jun Goto¹ (1. Niigata Univ.)

4:00 PM - 4:15 PM

[1M10] Investigation on distribution of radioactive substances in Fukushima

(4)Improvement of analysis method of the GAGG scintillator gamma camera mounted on the unmanned helicopter

*Yoshiaki Shikaze¹ (1. Japan Atomic Energy Agency)

4:15 PM - 4:30 PM

[1M11] Investigation on distribution of radioactive substances in Fukushima

(5)Decrease in air dose rate resulted by the radiocesium dynamics on paved and unpaved surfaces

*Kazuya Yoshimura¹, Kenso Fujiwara¹, Shigeo Nakama¹, Tomohisa Abe¹ (1. JAEA)

4:30 PM - 4:45 PM

[1M12] Investigation on distribution of radioactive substances in Fukushima

(6)Temporal changes in reduction rates of air dose rate in and around residential houses within former evacuation areas

*Hiroko Yoshida¹, Masateru Hayashi², Taisuke Makita², Tetsushi Azuma², Makoto Sasano², Shuichi Tsuda³ (1. Tohoku Univ., 2. Mitsubishi Electric, 3. JAEA)

Time reserved for Chair （4:45 PM - 5:00 PM）

Oral presentation

[2M01-08] Environmental Radioactivity 2

Thu. Sep 9, 2021 9:45 AM - 12:00 PM Room M

chair: Takeyoshi Sunagawa (FUT)

9:45 AM - 10:00 AM

[2M01] Investigation on distribution of radioactive substances in Fukushima

(7)Estimation of exposed dose by measurement of air dose rate

*Rina Sato¹, Kazuya Yoshimura¹, Yukihisa Sanada¹, Tetsuro Sato², Marie Takagi² (1. JAEA, 2. Hitachi Solutions East Japan)

10:00 AM - 10:15 AM

[2M02] Investigation on distribution of radioactive substances in Fukushima

(8)Estimation of runoff pathways of dissolved ¹³⁷Cs from headwater forest catchment in the high deposition area

*Hiroaki Kato¹, Satoru Akaiwa¹, Yuma Niwano¹, Hikaru Iida¹, Tomoki Shinozuka¹, Yuichi Onda¹ (1. Univ. of Tsukuba)

10:15 AM - 10:30 AM

[2M03] Investigation on distribution of radioactive substances in Fukushima

(9)Effect of stemflow on deep infiltration of ¹³⁷Cs in the cedar stand in Namie Town, Fukushima Prefecture

*Hikaru Iida¹, Hiroaki Kato¹, Tomoki Shinozuka¹, Satoru Akaiwa¹, Yuma Niwano¹, Yuichi Onda¹ (1. Univ. of Tsukuba)

10:30 AM - 10:45 AM

[2M04] Investigation on distribution of radioactive substances in Fukushima

(10)Evaluation of the spatial heterogeneity of Cs-137 distribution in forest soils using dye tracer

*Junko Takahashi¹, Takuya Sasaki¹, Satoshi Iguchi¹, Yuichi Onda¹ (1. Univ. of Tsukuba)

10:45 AM - 11:00 AM

[2M05] Investigation on distribution of radioactive substances in Fukushima

(11)Temporal changes in ¹³⁷Cs concentrations of soil and tree roots in Fukushima forests

*Satoshi Iguchi¹, Junko Takahashi², Hiroaki Kato², Yuichi Onda² (1. Univ of Tsukuba, 2. CRiED,Univ of Tsukuba)

11:00 AM - 11:15 AM

[2M06] Investigation on distribution of radioactive substances in Fukushima

(12)Evaluating the radiocesium fallout in Fukushima's contaminated forests

*Donovan Aaron Anderson¹, Hiroaki Kato¹, Yuichi Onda¹ (1. Univ. of Tsukuba)

11:15 AM - 11:30 AM

[2M07] Investigation on distribution of radioactive substances in Fukushima

(13)Fate and transport of radionuclides through rivers.: Comparison between Fukushima and Chernobyl

*Yuichi Onda¹ (1. CRIED University of Tsukuba)

11:30 AM - 11:45 AM

[2M08] Investigation on distribution of radioactive substances in Fukushima

(14)Impact of decontamination using observational data on sediment runoff from mountain streams to rivers and cesium dynamics in Yamakiya

*Fumiaki Makino¹, Yuichi Onda¹, Slim Mtibaa², Syo Iwagami², Kesuke Taniguchi³ (1. Univ. of Tsukuba, 2. Forest Research & Management Org., 3. NIT Tsuyama College)

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

Oral presentation

[2M09-14] Environmental Radioactivity 3

Thu. Sep 9, 2021 2:45 PM - 4:30 PM Room M

chair: Hideki Kakiuchi (IES)

2:45 PM - 3:00 PM

[2M09] Investigation on distribution of radioactive substances in Fukushima

(15)Analysis of radiocesium discharge using a model in Yamakiya

*Seigo Fujiwara¹, Yuichi Onda¹, Yoshifumi Wakiyama², Hiroaki Kato¹ (1. Univ. of Tsukuba, 2. Fukushima Univ.)

3:00 PM - 3:15 PM

[2M10] Investigation on distribution of radioactive substances in Fukushima

(16)Development of a watershed modeling for radionuclides

*Kazuyuki Sakuma¹, Masahiko Machida¹, Susumu Yamada¹, Hiroshi Kurikami¹ (1. JAEA)

3:15 PM - 3:30 PM

[2M11] Investigation on distribution of radioactive substances in Fukushima

(17)Development status of 3D-ADRES (3-Dimensional Air Dose Rate Evaluation System)

*Minsik Kim¹, Alex Malins¹, Masahiko Machida¹, Kimiaki Saito¹ (1. JAEA)

3:30 PM - 3:45 PM

[2M12] Investigation on distribution of radioactive substances in Fukushima

(18)Spatiotemporal Integration of Radiation Dose Rate Data across Scales

*Haruko Murakami Wainwright¹, Dajie Sun², Akiyuki Seki³, Hiroshi Takemiya³, Kimiaki Saito³ (1. Lawrence Berkeley National Laboratory, 2. University of California, Berkeley, 3. JAEA)

3:45 PM - 4:00 PM

[2M13] Investigation on distribution of radioactive substances in Fukushima

(19)Modeling of the fluctuations of the air-dose rate with a stochastic process and anomaly detection

Shintaro Iida¹, *Yuko Hatano¹ (1. Univ. of Tsukuba)

4:00 PM - 4:15 PM

[2M14] Investigation on distribution of radioactive substances in Fukushima

(20)Comparison of dose rate dynamic models between UNSCEAR 2020 and JAEA 2017

*Sakae Kinase^1,2, Satoshi Mikami¹, Masaki Andoh¹, Kimiaki Saito¹ (1. JAEA, 2. Ibaraki Univ.)

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

Oral presentation

[2M15-19] Environmental Dynamics of Radioactivity

Thu. Sep 9, 2021 4:30 PM - 6:00 PM Room M

chair: Haruyasu Nagai (JAEA)

4:30 PM - 4:45 PM

[2M15] Deposition characteristics revealing different sizes of molecular clusters of Po-218 and Pb-214 in air.

*Jun Moriizumi¹, Tomoki Asai¹, Hiromi Yamazawa¹ (1. Nagoya Univ.)

4:45 PM - 5:00 PM

[2M16] Numerical Analysis of the Effects of Radon Flux Variation due to Rainfall to Atmospheric Concentration

*Nichika Mizutani¹, Hiromi Yamazawa¹, Jun Moriizumi¹ (1. Nagoya Univ.)

5:00 PM - 5:15 PM

[2M17] Mechanism of occurrence of high dose-rate increase during rainfall and its relation with convective rainfall

*Masato Uchida¹, Hiromi Yamazawa¹, Jun Moriizumi¹ (1. Nagoya Univ.)

5:15 PM - 5:30 PM

[2M18] Analysis of Pb-210 deposition distribution Characteristics based on high resolution atmospheric transport/deposition model calculation

*Cai Yu¹ (1. Nagoya University)

5:30 PM - 5:45 PM

[2M19] Evaluation of tritium concentration in vegetation by investigation of the experimental field

*Akinobu Ishimine¹, Hideki Kakiuchi¹, Yuhi Satoh¹, Hidenao Hasegawa¹ (1. Institute for Environmental Sciences)

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

Oral presentation

[3M01-08] Dose Evaluation & Monitoring

Fri. Sep 10, 2021 9:45 AM - 12:00 PM Room M

chair: Jun Goto (Niigata Univ.)

9:45 AM - 10:00 AM

[3M01] Aerial radiation monitoring via manned helicopter around nuclear facilities

*Akira Futemma¹, Tamotsu Kudo¹ (1. JAEA)

10:00 AM - 10:15 AM

[3M02] Car-borne survey and gamma-ray imaging by vehicle-mounted gamma-ray imaging system iRIS-V

*Yoshiharu Kitayama¹, Yuta Terasaka¹, Yuki Sato¹ (1. JAEA)

10:15 AM - 10:30 AM

[3M03] Development of the presentation technology of spatial radiation dose rate distribution using mixed reality technology

*Kenji Osaki¹, Masafumi Endo¹, Taketsugu Kaneko¹, Masaaki Matsumoto¹, Takaki Katou¹ (1. TOSHIBA ESS)

10:30 AM - 10:45 AM

[3M04] A handheld dust collector to prevent the scatter of the MOX powders around the workplace

*Shinya Nakamichi¹, Ryota Tsuchimochi¹, Koyo Omi¹, Yoshikazu Yamada¹ (1. JAEA)

10:45 AM - 11:00 AM

[3M05] Measurement and calculation analysis of shielding material's performance for MOX containing Americium

*Toyofumi Okada¹, Tomohiro Shibanuma¹, Fumiya Honda¹, Akira Komeno¹, Hiroshi Kikuno¹ (1. Japan Atomic Energy Agency)

11:00 AM - 11:15 AM

[3M06] High efficient gamma and neutron shielding using Gd₂O₂S (2)

*Kohichi Nakayama¹, Koichi Nittoh², Yukihiro Fukuta³, Takashi Kamiyama⁴, Hirotaka Sato⁴, Yoshiaki Kiyanagi⁵ (1. TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION, 2. TOSHIBA TECHNICAL SERVICES INTERNATIONAL CORPERATION, 3. TOSHIBA MATERIALS CORPERATION, 4. Hokkaido University, 5. Professor Emeritus of the Hokkaido University)

11:15 AM - 11:30 AM

[3M07] Study of reaction mechanism of PVA-KI gel dosimeter (3)

*Takeyoshi Sunagawa¹, Glenn Harvel², Yutaro Aoki¹ (1. FUT, 2. Ontario Tech Univ.)

11:30 AM - 11:45 AM

[3M08] Mathematical analysis of radiation effects on neoplasm emergence and life-shortening in mice -Analyzing the differences among histological cancer types-

*Tetsuhiro Kinugawa¹, Takahiro Wada², Yuichiro Manabe¹, Fuminobu Sato¹, Satoshi Tanaka³ (1. Osaka Univ., 2. Kansai Univ., 3. IES)

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

Sessions

VII. Health Physics and Environmental Science » Health Physics and Environmental Science

[1M01-04] Atmospheric Dispersion

(4)A prototype of estimation method

(5)A simple atmospheric dispersion calculation using meteorological observation data

[1M05-12] Environmental Radioactivity 1

(1)Research proposal on quantitative estimation of site-specific temporal change in air dose rate

(2)Development of measurement techniques on radiation distribution based on KURAMA-II

(3)Investigation on the distribution of radioactive cesium deposition densities using ASURA

(4)Improvement of analysis method of the GAGG scintillator gamma camera mounted on the unmanned helicopter

(5)Decrease in air dose rate resulted by the radiocesium dynamics on paved and unpaved surfaces

(6)Temporal changes in reduction rates of air dose rate in and around residential houses within former evacuation areas

[2M01-08] Environmental Radioactivity 2

(7)Estimation of exposed dose by measurement of air dose rate

(8)Estimation of runoff pathways of dissolved 137Cs from headwater forest catchment in the high deposition area

(9)Effect of stemflow on deep infiltration of 137Cs in the cedar stand in Namie Town, Fukushima Prefecture

(10)Evaluation of the spatial heterogeneity of Cs-137 distribution in forest soils using dye tracer

(11)Temporal changes in 137Cs concentrations of soil and tree roots in Fukushima forests

(12)Evaluating the radiocesium fallout in Fukushima's contaminated forests

(13)Fate and transport of radionuclides through rivers.: Comparison between Fukushima and Chernobyl

(14)Impact of decontamination using observational data on sediment runoff from mountain streams to rivers and cesium dynamics in Yamakiya

[2M09-14] Environmental Radioactivity 3

(15)Analysis of radiocesium discharge using a model in Yamakiya

(16)Development of a watershed modeling for radionuclides

(17)Development status of 3D-ADRES (3-Dimensional Air Dose Rate Evaluation System)

(18)Spatiotemporal Integration of Radiation Dose Rate Data across Scales

(19)Modeling of the fluctuations of the air-dose rate with a stochastic process and anomaly detection

(20)Comparison of dose rate dynamic models between UNSCEAR 2020 and JAEA 2017

[2M15-19] Environmental Dynamics of Radioactivity

[3M01-08] Dose Evaluation & Monitoring

Authentication

(8)Estimation of runoff pathways of dissolved ¹³⁷Cs from headwater forest catchment in the high deposition area

(9)Effect of stemflow on deep infiltration of ¹³⁷Cs in the cedar stand in Namie Town, Fukushima Prefecture

(11)Temporal changes in ¹³⁷Cs concentrations of soil and tree roots in Fukushima forests