Oral presentation

[3G01-05] Behavior of Radioactive Nuclides & Fuel Debris 1

Fri. Mar 19, 2021 9:30 AM - 11:00 AM Room G (Zoom room 7)

Chair: Shunsuke Uchida (JAEA)

9:30 AM - 9:45 AM

[3G01] Estimation of Cs distribution and characteristics in the reactor unde severe accident

(1)Evaluation of amounts of chemisorped Cs in the reactor

*Hidetoshi Karasawa¹, Shuuhei Miwa¹, Chiaki Kino² (1. JAEA, 2. IAE)

9:45 AM - 10:00 AM

[3G02] Estimation of Cs distribtion and characteristics in the reactor under severe accident

2.Evaluation of Cs chemisorption behavior

*Nakajima Kunihisa¹, Suzuki Eriko¹, Imoto Jumpei¹, Miwa shuhei¹, Osaka Masahiko¹ (1. JAEA)

10:00 AM - 10:15 AM

[3G03] Estimation of Cs distribution and characteristics in the reactor under severe accident

(3)Chemical forms of Cs chemisorbed products

*Eriko Suzuki^1,2, Kunihisa Nakajima¹, Shuhei Miwa¹, Masahiko Osaka¹, Naoyuki Hashimoto², Shigehito Isobe², Hiroshi Oka² (1. JAEA, 2. Hokkaido Univ.)

10:15 AM - 10:30 AM

[3G04] Estimation of Cs distribution and characteristics in the reactor under severe accident

(4)Dissolution properties of Cs-chemisorbed compounds in water

*Jumpei Imoto¹, Kunihisa Nakajima¹, Shuhei Miwa¹ (1. JAEA)

10:30 AM - 10:45 AM

[3G05] Estimation of Cs distribution and characteristics in the reactor under severe accident

(5)Summary

*Shuhei Miwa¹, Hidetoshi Karasawa¹, Chiaki Kino², Kunihisa Nakajima¹, Eriko Suzuki¹, Junpei Imoto¹ (1. JAEA, 2. IAE)

Time reserved for Chair （10:45 AM - 11:00 AM）

Oral presentation

[3G06-08] Behavior of Radioactive Nuclides & Fuel Debris 2

Fri. Mar 19, 2021 11:00 AM - 12:00 PM Room G (Zoom room 7)

Chair: Hidetoshi Karasawa (JAEA)

11:00 AM - 11:15 AM

[3G06] Study on revaporization of deposited CsI from stainless steel 304 surface in high-temperature steam atmosphere

*Muhammad Rizaal¹, Shuhei Miwa¹, Eriko Suzuki¹, Jumpei Imoto¹, Masahiko Osaka¹, Mélany Gouëllo² (1. Japan Atomic Energy Agency, 2. VTT Technical Research Centre of Finland)

11:15 AM - 11:30 AM

[3G07] Assembling Analysis System for Behavior of Water-Containing Fuel Debris - (III)

Analysis of literature data on irradiated fuels

*Toru Ogawa¹ (1. JAEA)

11:30 AM - 11:45 AM

[3G08] Evaluation of Short and Long-Term Behavior of Radioactive Nuclides Distributed in Fukushima Daiichi NPP

8.Evaluation of cesium amounts in the D/W bottom region based on backward evaluation from CAMS data

*Shunsuke Uchida¹, Hidetoshi Karasawa¹, Chiaki Kino², Masahiko Ohsaka¹ (1. JAEA, 2. IAE)

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

Oral presentation

[3G09-11] Corrosion & Electrochemistry at High Temperature 1

Fri. Mar 19, 2021 2:45 PM - 3:45 PM Room G (Zoom room 7)

Chair: Hiroshi Abe (Tohoku Univ.)

2:45 PM - 3:00 PM

[3G09] Effect of Catalysts Deposition on Carbon Steel Corrosion

*Koji Negishi¹, Takahiro Hara¹, Yusuke Horayama¹, Junichi Takagi¹ (1. TOSHIBA ESS)

3:00 PM - 3:15 PM

[3G10] Development of suppression method for deposition of radioactivity and mitigation of corrosive environment

(11)Suppression mechanism of Co deposition by Ni coat with Pt particles on carbon steel

*Tsuyoshi Ito¹, Hideyuki Hosokawa¹, Mayu Sasaki², Makoto Nagase² (1. Hitachi Ltd., 2. Hitachi-GE Nuclear Energy, Ltd.)

3:15 PM - 3:30 PM

[3G11] High Temperature Electrochemical Reaction Parameters for Electrochemical Corrosion Potential Model

*Yoichi Wada¹, Kazushige Ishida¹, Makoto Nagase² (1. Hitachi, 2. HGNE)

Time reserved for Chair （3:30 PM - 3:45 PM）

Oral presentation

[3G12-14] Corrosion & Electrochemistry at High Temperature 2

Fri. Mar 19, 2021 3:45 PM - 4:45 PM Room G (Zoom room 7)

Chair: Koji Negishi (TOSHIBA ESS)

3:45 PM - 4:00 PM

[3G12] The effects of hydrogen addition on the corrosive conditions of PWR primary coolant under irradiation

(1)Effects radiation quality and pH on water radiolysis

*Kuniki Hata¹, Satoshi Hanawa¹, Yasuhiro Chimi¹, Shunsuke Uchida¹ (1. JAEA)

4:00 PM - 4:15 PM

[3G13] The effects of hydrogen addition on the corrosive conditions of PWR primary coolant under irradiation

(2)Effects of oxide film and hydrogen on ECP

*Satoshi Hanawa¹, Kuniki Hata¹, Yasuhiro Chimi¹, Shunsuke Uchida¹ (1. JAEA)

4:15 PM - 4:30 PM

[3G14] Corrosion test of T91 and SUS316L in liquid lead bismuth at 500 deg C

*Atsushi Komatsu¹, Chiaki Kato¹ (1. JAEA)

Time reserved for Chair （4:30 PM - 4:45 PM）

Sessions

V. Nuclear Fuel Cycle and Nuclear Materials » 503-1 Reactor Chemistry, Radiation Chemistry, Corrosion, Water Chemistry,Water Quality Control

[3G01-05] Behavior of Radioactive Nuclides & Fuel Debris 1

[3G01] Estimation of Cs distribution and characteristics in the reactor unde severe accident

(1)Evaluation of amounts of chemisorped Cs in the reactor

[3G02] Estimation of Cs distribtion and characteristics in the reactor under severe accident

2.Evaluation of Cs chemisorption behavior

[3G03] Estimation of Cs distribution and characteristics in the reactor under severe accident

(3)Chemical forms of Cs chemisorbed products

[3G04] Estimation of Cs distribution and characteristics in the reactor under severe accident

(4)Dissolution properties of Cs-chemisorbed compounds in water

[3G05] Estimation of Cs distribution and characteristics in the reactor under severe accident

(5)Summary

[3G06-08] Behavior of Radioactive Nuclides & Fuel Debris 2

[3G06] Study on revaporization of deposited CsI from stainless steel 304 surface in high-temperature steam atmosphere

[3G07] Assembling Analysis System for Behavior of Water-Containing Fuel Debris - (III)

Analysis of literature data on irradiated fuels

[3G08] Evaluation of Short and Long-Term Behavior of Radioactive Nuclides Distributed in Fukushima Daiichi NPP

8.Evaluation of cesium amounts in the D/W bottom region based on backward evaluation from CAMS data

[3G09-11] Corrosion & Electrochemistry at High Temperature 1

[3G09] Effect of Catalysts Deposition on Carbon Steel Corrosion

[3G10] Development of suppression method for deposition of radioactivity and mitigation of corrosive environment

(11)Suppression mechanism of Co deposition by Ni coat with Pt particles on carbon steel

[3G11] High Temperature Electrochemical Reaction Parameters for Electrochemical Corrosion Potential Model

[3G12-14] Corrosion & Electrochemistry at High Temperature 2

[3G12] The effects of hydrogen addition on the corrosive conditions of PWR primary coolant under irradiation

(1)Effects radiation quality and pH on water radiolysis

[3G13] The effects of hydrogen addition on the corrosive conditions of PWR primary coolant under irradiation

(2)Effects of oxide film and hydrogen on ECP

[3G14] Corrosion test of T91 and SUS316L in liquid lead bismuth at 500 deg C

Authentication