Oral presentation

[1J01-03] Analysis Technology 1

Wed. Sep 7, 2022 10:00 AM - 10:50 AM Room J (E1 Bildg.4F No.42)

Chair:Hirofumi Okabe(TOSHIBA ESS)

10:00 AM - 10:15 AM

[1J01] Development of Fire Zone Model BRI2-CRIEPI

(1) Outline of the fire model

*Koji SHIRAI¹, Koji TASAKA¹, Junghoon JI¹, Toshiko UDAGAWA² (1. Central Research Institute of Electric Power Industry, 2. WDB)

10:15 AM - 10:30 AM

[1J02] Development of Fire Zone Model BRI2-CRIEPI

(2) Multiple fire source model

*Koji Tasaka¹, Junghoon Ji¹, Toshiko Udagawa², Koji Shirai¹ (1. CRIEPI, 2. WDB Co., Ltd.)

10:30 AM - 10:45 AM

[1J03] Development of Fire Zone Model BRI2-CRIEPI

(3) Water spray model

*Junghoon JI¹, Koji SHIRAI¹, Toshiko UDAGAWA², Koji TASAKA¹ (1. CRIEPI, 2. WDB)

Time reserved for Chair （10:45 AM - 10:50 AM）

Oral presentation

[1J04-07] Analysis Technology 2

Wed. Sep 7, 2022 10:50 AM - 12:00 PM Room J (E1 Bildg.4F No.42)

Chair:Koji Morita(Kyushu Univ.)

10:50 AM - 11:05 AM

[1J04] Speedup by Parallel Processing in a CFD Compressible Fluid Dynamics Simulation Code: BAROC for Safety Analysis of Containment Vessel and Reactor Building Under Severe Accident Conditions

*Atsuo Takahashi¹, Mamoru Shimizu¹, Fumitomo Onishi¹, Achihiro Hamano¹, Toshiharu Mitsuhashi¹, Hideaki Koike¹, Masanori Naitoh¹ (1. AdvanceSoft Corporation)

11:05 AM - 11:20 AM

[1J05] Effect of Turbulence on Hydrogen deflagration Behavior during SA of LWR

*Sei Yura¹, Kosuke Motegi², Tomoyuki Sugiyama², Kazuhiro Sawa¹ (1. Hokkaido Univ., 2. JAEA)

11:20 AM - 11:35 AM

[1J06] Plant incident progress scenario analysis for Mihama nuclear emergency exercise of Kansai Electric Power Co., Inc. 2021

*Ikuo Kawasaki¹, Toshiya Takaki¹, Yoshinori Yamamoto², Tsuyoshi Yamazaki², Hiroyuki Ikeda², Hajime Takebe² (1. INSS, 2. KEPCO)

11:35 AM - 11:50 AM

[1J07] Examination of Transient Reactor Analysis code Toshiba version (TRACT^TM) application for Loss-of-Coolant Accident analyses

*Fumie Sebe¹, Hideki Horie¹, Yutaka Takeuchi¹, Takanori Fukunaga¹ (1. Toshiba Energy Systems & Solutions Corporation)

Time reserved for Chair （11:50 AM - 12:00 PM）

Oral presentation

[1J08-12] Test Analysis

Wed. Sep 7, 2022 2:45 PM - 4:05 PM Room J (E1 Bildg.4F No.42)

Chair:Koji SHIRAI(CRIEPI)

2:45 PM - 3:00 PM

[1J08] Evaluation of Flammable Gas Generated by Organic Materials in Nuclear Primary Containment Vessel (Part 1)

*Yukiko Furuhashi¹, Takanobu Saito¹, Yutaka Kikukawa¹, Shunichi Imai¹ (1. TEPCO HD)

3:00 PM - 3:15 PM

[1J09] Examination of measurement method of the hardness by Laser Induced Breakdown Spectroscopy (LIBS) and multivariate analysis

*Kodai Okazaki¹, Tomohiko Kawakami¹, Sakiko Nagayama¹, Yuta Abe², Etsuyo Makuuchi³, Masahiko Ohtaka², Yuji Ohishi⁴ (1. KAKEN, 2. JAEA, 3. ART KAGAKU, 4. Osaka Univ.)

3:15 PM - 3:30 PM

[1J10] Analysis of High Burnup Irradiation Tests of Coated Fuel for High Temperature Gas-cooled Reactors

*Kaito Kawano¹, Jun Aihara², Kazuhiro Sawa¹ (1. Hokkaido Univ., 2. JAEA)

3:30 PM - 3:45 PM

[1J11] Analytical study of spallation products' behavior in the MEGAPIE target

(1) Evaluation of spallation product (SP) inventory in lead-bismuth eutectic (LBE) target by PHITS code

*Fujio Maekawa¹, Keita Nakano¹, Toshinobu Sasa¹, Hironari Obayashi¹, Hayanori Takei¹, Shinya Miyahara², Yuji Arita² (1. JAEA, 2. Univ. of Fukui)

3:45 PM - 4:00 PM

[1J12] Analytical study of spallation products' behavior in the MEGAPIE target

(2) Evaluation of volatile SP inventories released from LBE into the cover gas by TRAIL code

*Shinya Miyahara¹, Yuji Arita¹, Fujio Maekawa², Keita Nakano², Toshinobu Sasa², Hironari Obayashi², Hayanori Takei² (1. Univ. of Fukui, 2. JAEA)

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

Oral presentation

[1J13-15] Eutectic Melting

Wed. Sep 7, 2022 4:05 PM - 4:55 PM Room J (E1 Bildg.4F No.42)

Chair:Shinya Miyahara(Univ. of Fukui)

4:05 PM - 4:20 PM

[1J13] Study on Eutectic Melting Behavior of Control Rod Materials in Core Disruptive Accidents of Sodium-Cooled Fast Reactors

(29) Project Overview and Progress until 2021

*Toshihide Takai¹, Hidemasa Yamano¹, Yuki Emura¹, Hideo Higashi², Hiroyuki Fukuyama², Koji Morita³, Kinya Nakamura⁴, Hirohumi Fukai⁵, Masahiro Furuya⁵, Marco Pellegrini⁶ (1. JAEA, 2. Tohoku Univ., 3. Kyushu Univ., 4. CRIEPI, 5. Waseda Univ., 6. UTokyo)

4:20 PM - 4:35 PM

[1J14] Study on Eutectic Melting Behavior of Control Rod Materials in Core Disruptive Accidents of Sodium-Cooled Fast Reactors

(30) Melting behavior analysis of SUS316L containing 9-11mass%B₄C using ultrahigh-temperature thermal analysis based on blackbody radiation

*Hideo Higashi¹, Makoto Ohtsuka¹, Masayoshi Adachi¹, Hiroyuki Fukuyama¹, Hidemasa Yamano² (1. Tohoku Univ., 2. JAEA)

4:35 PM - 4:50 PM

[1J15] Study on Eutectic Melting Behavior of Control Rod Materials in Core Disruptive Accidents of Sodium-Cooled Fast Reactors

(31) Study of solidification pathway of SUS316L containing 9-11mass%B₄C by in-situ observation and quench method with electromagnetic levitation

*Hiroyuki Fukuyama¹, Hideo Higashi¹, Makoto Ohtsuka¹, Masayoshi Adachi¹, Hidemasa Yamano² (1. Tohoku Univ., 2. JAEA)

Time reserved for Chair （4:50 PM - 4:55 PM）

Oral presentation

[2J01-04] Loss of Coolant Accident

Thu. Sep 8, 2022 9:45 AM - 10:50 AM Room J (E1 Bildg.4F No.42)

Chair:Keita Goto(TOSHIBA ESS)

9:45 AM - 10:00 AM

[2J01] Study of downstream effect of the sump screen for post LOCA long term core cooling

(6) Core inlet flow pass test and alternative flow pass test for feeding coolant

*Tomoaki Ogata¹, Kei Higashi¹, Ryo Fukuda¹, Hideyuki Sakata¹, Tetsuya Teramae¹, Yugen Shiratsuchi¹, Hamano Junji² (1. MHI, 2. KEPCO)

10:00 AM - 10:15 AM

[2J02] Study of downstream effect of the sump screen for post LOCA long term core cooling

（7）化学デブリ析出時間に関する基礎試験

*Koudai Inoue¹, Nobuyuki ukai¹, Ryo Fukuda¹, Tetsuya Teramae¹, Tomoaki Ogata¹, Yugen Shiratsuchi¹, Takeshi Enomoto ¹, Hideyuki Sakata¹, Kei Higashi¹, Junji Hamano² (1. Mitsubishi Heavy Industries, 2. Kansai Electric Power Co., Inc.)

10:15 AM - 10:30 AM

[2J03] Study of downstream effect of the sump screen for post LOCA long term core cooling

Thermal-hydraulic analysis of core inlet blockage reflect results of several core blockage tests

*Tetsuya Teramae¹, Ryo Fukuda¹, Tomoaki Ogata¹, Yugen Shiratsuchi¹, Kei Higashi¹, Hideyuki Sakata¹, Tomokazu Aoyagi², Junji Hamano³ (1. MHI, 2. MHI NSE, 3. KEPCO)

10:30 AM - 10:45 AM

[2J04] Development of out of pile test equipment to simulate the dispersal and accumulation behavior of fuel fragments under FFRD condition

*Yuki Shimizu¹, Koichi Ogata¹, Yasunari Shinohara¹, Masaaki Yamato² (1. NDC, 2. MHI)

Time reserved for Chair （10:45 AM - 10:50 AM）

Oral presentation

[2J05-08] FP Behavior/Nuclear Disaster Prevention

Thu. Sep 8, 2022 10:50 AM - 11:55 AM Room J (E1 Bildg.4F No.42)

Chair:Sunghyon Jang(Hokkaido Univ.)

10:50 AM - 11:05 AM

[2J05] Evaluation of FP Behavior Models in SAs

(3) Evaluation of aerosol deposition models and a CsOH revaporaization model in SA codes

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

11:05 AM - 11:20 AM

[2J06] Development of Mechanical Source Term Evaluation Methodology for Sodium-cooled Fast Reactors

– Study on numerical models of fission product gas behavior in liquid sodium coolant –

*Yasushi OKANO¹, Akihiro UCHIBORI¹, Hidemasa YAMANO¹, Satoshi FUTAGAMI¹ (1. JAEA)

11:20 AM - 11:35 AM

[2J07] Examination of Screening Point Operation Optimization in a Nuclear Disaster

Development of Work Model

*Hengyang Li¹, Kyoko Oba¹, Muneyoshi Numada² (1. Nagaoka Univ. of Tech., 2. UTokyo)

11:35 AM - 11:50 AM

[2J08] Proposals of Un-collapse Tsunami Levee for Atomic Power Plants against Un-expected Design-size of Tsunami Inundation for Hamaoka Plant

*Daijiro KANEKO¹ (1. Remote Sensing Environmental Monitor, Inc.)

Time reserved for Chair （11:50 AM - 11:55 AM）

Oral presentation

[2J09-13] Passive Safety System

Thu. Sep 8, 2022 2:45 PM - 4:10 PM Room J (E1 Bildg.4F No.42)

Chair:Akifumi Yamaji(Waseda Univ.)

2:45 PM - 3:00 PM

[2J09] Research on Reactor Cavity Cooling System (RCCS) with Passive Safety Features

*Kuniyoshi Takamatsu¹, Shumpei Funatani², Masaki Banno² (1. JAEA, 2. Univ. of Yamanashi)

3:00 PM - 3:15 PM

[2J10] Development of a passive safety shutdown device to prevent core damage accidents in fast reactors

(7) Overview of overall project progress through FY2021

*Koji Morita¹, Wei Liu¹, Tatsumi Arima¹, Yuji Arita², Isamu Sato³, Haruaki Matsuura³, Yoshihiro Sekio⁴, Hiroshi Sagara⁵, Masatoshi Kawashima⁵ (1. Kyushu Univ., 2. Univ. of Fukui, 3. Tokyo City Univ., 4. JAEA, 5. Tokyo Tech)

3:15 PM - 3:30 PM

[2J11] Development of a passive safety shutdown device to prevent core damage accidents in fast reactors

(8) Progress in selection and material properties evaluation for simulated fuel and fusible plug materials

*Tatsumi Arima¹, Masato Sumiyoshi¹, Koji Morita¹, Isamu Sato², Koukin Oo², Yuji Arita³, Kei Ando³, Taku Miyabe³ (1. Kyushu university, 2. Tokyo city university, 3. University of Fukui)

3:30 PM - 3:45 PM

[2J12] Development of a passive safety shutdown device to prevent core damage accidents in fast reactors

(9) Basic evaluations of fuel migration behavior in the device by visualization experiments

*Yoshihiro Sekio¹, Isamu Sato², Masatoshi Kawashima³, Koji Morita⁴ (1. JAEA, 2. TCU, 3. Tokyo Tech, 4. Kyushu Univ.)

3:45 PM - 4:00 PM

[2J13] Development of a passive safety shutdown device to prevent core damage accidents in fast reactors

(10) Selection of the device assembly design effective in the reactivity control by its material relocation

*HIROSHI SAGARA¹, Koji Morita², Masatoshi Kawashima¹, Tatsumi Arima², Wei Liu², Yuji Arita³, Isamu Sato⁴ (1. Tokyo Tech, 2. Kyushu Univ, 3. Univ. of Fukui, 4. TCU)

Time reserved for Chair （4:00 PM - 4:10 PM）

Oral presentation

[2J14-19] Hydrogen Treatment System

Thu. Sep 8, 2022 4:10 PM - 5:45 PM Room J (E1 Bildg.4F No.42)

Chair:Hidetoshi Karasawa(JAEA)

4:10 PM - 4:25 PM

[2J14] Development of Hydrogen Treatment System in Severe Accidents Phase-II

(1)Overview

*Hiroki Kokami¹, Keita Goto¹, Tomoya Takeda¹, Yasutaka Aoki¹, Daiki Takeyama¹, Hirofumi Okabe¹, Hiroshi Masaki¹ (1. TOSHIBA ESS)

4:25 PM - 4:40 PM

[2J15] Development of Hydrogen Treatment System in Severe Accidents Phase-Ⅱ

(2) Development of Hydrogen Reactants

*Motoshige Yagyu¹, Akira Yamada¹, Hirofumi Okabe¹, Kazuya Yamada¹, Hiroki Kokami¹, Hiroshi Masaki¹ (1. TOSHIBA ESS)

4:40 PM - 4:55 PM

[2J16] Development of Hydrogen Treatment System in Severe Accidents Phase-II

(3) Measurement of Chemical Reaction Behavior by Experiment of Packed Bed in Single Tube

*Daiki Takeyama¹, Masayuki Sato¹, Takashi Mawatari¹, Kotaro Nakamura¹, Masato Fukuta¹, Hiroki Kokami¹, Hiroshi Masaki¹ (1. TOSHIBA ESS)

4:55 PM - 5:10 PM

[2J17] Development of Hydrogen Treatment System in Severe Accidents Phase-II

(4) Prediction of Hydrogen Treatment Performance by Numerical Calculation

*Kotaro Nakamura¹, Daiki Takeyama¹, Masato Fukuta¹, Takao Nakagaki², Hiroki Kokami¹, Hiroshi Masaki¹ (1. TOSHIBA ESS, 2. Waseda Univ.)

5:10 PM - 5:25 PM

[2J18] Development of Hydrogen Treatment System in Severe Accidents Phase-II

(5)The behavior of Hydrogen Oxidation Reaction and, A Fundamental Prediction of Hydrogen Treatment

*Hirofumi Okabe¹, Akira Yamada¹, Motoshige Yagyu ¹, Kazuya Yamada¹, Motoaki Kawase², Ryuichi Ashida², Hiroki kokami¹, Hiroshi Masaki ¹ (1. TOSHIBA ESS, 2. Kyoto Univ.)

5:25 PM - 5:40 PM

[2J19] Development of Hydrogen Treatment System in Severe Accidents Phase-II

(6) Performance Estimation of Hydrogen Treatment System

*Keita Goto¹, Tomoya Takeda¹, Yasutaka Aoki¹, Hiroki Kokami¹, Hiroshi Masaki¹ (1. TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION)

Time reserved for Chair （5:40 PM - 5:45 PM）

Sessions

IV. Nuclear Plant Technologies » 402-1 Nuclear Safety Engineering (Safety Design, Safety Assessment/Analysis, Management)

[1J01-03] Analysis Technology 1

(1) Outline of the fire model

(2) Multiple fire source model

(3) Water spray model

[1J04-07] Analysis Technology 2

[1J08-12] Test Analysis

(1) Evaluation of spallation product (SP) inventory in lead-bismuth eutectic (LBE) target by PHITS code

(2) Evaluation of volatile SP inventories released from LBE into the cover gas by TRAIL code

[1J13-15] Eutectic Melting

(29) Project Overview and Progress until 2021

(30) Melting behavior analysis of SUS316L containing 9-11mass%B4C using ultrahigh-temperature thermal analysis based on blackbody radiation

(31) Study of solidification pathway of SUS316L containing 9-11mass%B4C by in-situ observation and quench method with electromagnetic levitation

[2J01-04] Loss of Coolant Accident

(6) Core inlet flow pass test and alternative flow pass test for feeding coolant

（7）化学デブリ析出時間に関する基礎試験

Thermal-hydraulic analysis of core inlet blockage reflect results of several core blockage tests

[2J05-08] FP Behavior/Nuclear Disaster Prevention

(3) Evaluation of aerosol deposition models and a CsOH revaporaization model in SA codes

– Study on numerical models of fission product gas behavior in liquid sodium coolant –

Development of Work Model

[2J09-13] Passive Safety System

(7) Overview of overall project progress through FY2021

(8) Progress in selection and material properties evaluation for simulated fuel and fusible plug materials

(9) Basic evaluations of fuel migration behavior in the device by visualization experiments

(10) Selection of the device assembly design effective in the reactivity control by its material relocation

[2J14-19] Hydrogen Treatment System

(1)Overview

(2) Development of Hydrogen Reactants

(3) Measurement of Chemical Reaction Behavior by Experiment of Packed Bed in Single Tube

(4) Prediction of Hydrogen Treatment Performance by Numerical Calculation

(5)The behavior of Hydrogen Oxidation Reaction and, A Fundamental Prediction of Hydrogen Treatment

(6) Performance Estimation of Hydrogen Treatment System

Authentication

(30) Melting behavior analysis of SUS316L containing 9-11mass%B₄C using ultrahigh-temperature thermal analysis based on blackbody radiation

(31) Study of solidification pathway of SUS316L containing 9-11mass%B₄C by in-situ observation and quench method with electromagnetic levitation