Oral presentation

[1N01-07] PRA Method

Wed. Sep 6, 2023 10:00 AM - 11:55 AM Room N (School of Eng. Bildg. 2F 521)

Chair:Hiroshi Ujita(AdvanceSoft)

10:00 AM - 10:15 AM

[1N01] Development of evaluation methods for simplified evaluation of emergency response

(1)Shutdown time conversion factor for simplified exposure assessment considering scenario characteristics

*Retsu KOJO¹, Kodai WADAYAMA¹ (1. Nuclear Regulation Authority)

10:15 AM - 10:30 AM

[1N02] Development of evaluation methods for simplified evaluation of emergency response

(2)Study of diffusion calculation methods for simplified exposure assessment

*Kodai Wadayama¹, Retsu Kojo¹ (1. NRA)

10:30 AM - 10:45 AM

[1N03] Visualization of Risk Associated with Evacuation of Residents during Nuclear Disaster

*Sakura Fukue¹, Hitoshi Muta¹, Yasuki Ohtori¹ (1. TCU Univ.)

10:45 AM - 11:00 AM

[1N04] Importance Measure Considering Common Cause Failure

Proposal of Combination Importance

*Ryoto Kobayashi¹, Yasuki Ohtori¹, Hitoshi Muta¹, Masato NAKAJIMA² (1. TCU, 2. CRIEPI)

11:00 AM - 11:15 AM

[1N05] A Multi-unit Risk Assessment Using time and spatital depedent Human Error Probability

*Sunghyon Jang¹, Munemichi Kawaguchi¹, Kazuhiro Sawa¹ (1. Hokkaido University)

11:15 AM - 11:30 AM

[1N06] Evaluation of human error probability in cognitive and diagnostic tasks as a criterion for considering environmental effects

*Kotaro Miwa¹, Munemichi Kawaguchi¹, Kazuhiro Sawa¹, Sunghyon Jang¹ (1. Hokkaido University)

11:30 AM - 11:45 AM

[1N07] A Study of Natural Language Processing for Classification of Japanese Reports

*Kento Tsukamoto¹, Takanori Kitada¹, Satoshi Takeda¹ (1. Osaka Univ.)

Time reserved for Chair （11:45 AM - 11:55 AM）

Oral presentation

[1N08-13] Seismic-tsunami

Wed. Sep 6, 2023 2:45 PM - 4:25 PM Room N (School of Eng. Bildg. 2F 521)

Chair:Yasuki Ohtori(TCU)

2:45 PM - 3:00 PM

[1N08] Development of methodology for seismic-tsunami superposition PRA

(1) Development Concept of Superposition PRA

*Yukihiro Kirimoto¹, Masashi Matsuyama¹, Hiroyuki Yamada¹, Tunehito Otomo² (1. CRIEPI, 2. Tohoku-EPCO)

3:00 PM - 3:15 PM

[1N09] Development of methodology for seismic-tsunami superposition PRA

(2) Analysis of superposition scenario

*Hiromichi Miura¹, Yukihiro Kirimoto¹, Masafumi Matsuyama¹, Kiyoshi Saito¹, Eishiro Higo¹, Tunehito Otomo² (1. CRIEPI, 2. Tohoku-EPCO)

3:15 PM - 3:30 PM

[1N10] Development of methodology for seismic-tsunami superposition PRA

(3) Evaluation method of superposed hazards and enhancement of seismic hazard evaluation

*Masato Nakajima¹, Masafumi Matsuyama¹, Naoto Kihara¹, Shinya Tanaka², Shuji Kumagai³ (1. CRIEPI, 2. TEPSCO, 3. Tohoku-EPCO)

3:30 PM - 3:45 PM

[1N11] Development of methodology for seismic-tsunami superposition PRA

(4) Development of tsunami scenarios for fragility analysis

*Naoto Kihara¹, Masafumi Matsuyama¹, Masato Nakajima¹, Shigeru Yamaki², Takeshi Kanno³ (1. CRIEPI, 2. Seamus, 3. Tohoku Erectric Power Co., Inc.)

3:45 PM - 4:00 PM

[1N12] Development of methodology for seismic-tsunami superposition PRA

(5) Target screening for fragility analysis of outdoor facilities and leakage impact estimation of watertight door

*Kiyoshi Saito¹, Naoto Kihara¹, Yoshinori Mihara², Yosuke Kono², Hiroshi Sawabe³, Tatsuo Kusakai³ (1. CRIEPI, 2. KAJIMA, 3. Tohoku-EPCO)

4:00 PM - 4:15 PM

[1N13] Development of methodology for seismic-tsunami superposition PRA

(6) Accident sequence analysis

*Eishiro Higo¹, Tsuyoshi Uchida¹, Takashi Kato², Yuji Komori², Motomu Suzuki¹, Shota Soga¹, Kohei Nonose¹, Masaaki Satake¹, Atsushi Ui¹, Tsunehito Otomo³ (1. CRIEPI, 2. TOSHIBA Energy Systems & Solutions Co., 3. Tohoku-EPCO)

Time reserved for Chair （4:15 PM - 4:25 PM）

Oral presentation

[1N14-19] Dynamic & Multi-hazards PRA

Wed. Sep 6, 2023 4:25 PM - 6:00 PM Room N (School of Eng. Bildg. 2F 521)

Chair:Sunghyon Jang(Hokkaido Univ.)

4:25 PM - 4:40 PM

[1N14] Study on Risk Importance Evaluation in Dynamic PRA

(1) The Concept and Measures of Risk Importance

*Takafumi Narukawa¹, Takashi Takata¹, Xiaoyu Zheng², Hitoshi Tamaki², Yu Maruyama², Tsuyoshi Takada² (1. UTokyo, 2. JAEA)

4:40 PM - 4:55 PM

[1N15] Study on Risk Importance Evaluation in Dynamic PRA

(2) Survey on Nuclear Regulatory Applications and Trial Calculation with Dynamic Level 2 PRA

*Xiaoyu Zheng¹, Hitoshi Tamaki¹, Yu Maruyama¹, Tsuyoshi Takada¹, Takafumi Narukawa², Takashi Takata² (1. JAEA, 2. UTokyo)

4:55 PM - 5:10 PM

[1N16] Development of probabilistic risk assessment method considering multi-hazards

Part 1: Research Plan and Aim

*Tsuyoshi Takada¹, Akemi Nishida¹, Byunghyun Choi¹, Kiyotaka Takito¹, Hideaki Tsutsumi², Ken Muramatsu¹, kotaro Kubo^1,3 (1. JAEA, 2. Total Support System, 3. NRA)

5:10 PM - 5:25 PM

[1N17] Development of probabilistic risk assessment method considering multi-hazards

Part 2: Results of literature survey on the classification and modeling methods of multi-hazards

*Hideaki Tsutsumi¹, Byunghyun Choi², Akemi Nishida², Tsuyoshi Takada² (1. Total Support System Corporation, 2. JAEA)

5:25 PM - 5:40 PM

[1N18] Development of probabilistic risk assessment method considering multi-hazards

Part 3: Proposal of damage assessment method for multiple equipment based on three-dimensional seismic response behavior of reactor building

*Byunghyun Choi¹, Kiyotaka Takito¹, Akemi Nishida¹, Tsuyoshi Takada¹ (1. Japan Atomic Energy Agency)

5:40 PM - 5:55 PM

[1N19] Development of probabilistic risk assessment method considering multi-hazards

Part 4: Recent improvement of system reliability analysis code SECOM2-DQFM

*Kotaro Kubo^1,2, Kiyotaka Takito¹, Choi Byunghyun¹, Akemi Nishida¹, Ken Muramatsu¹, Tsuyoshi Takada¹ (1. JAEA, 2. NRA)

Time reserved for Chair （5:55 PM - 6:00 PM）

Oral presentation

[2N01-05] Seismic PRA 1

Thu. Sep 7, 2023 9:30 AM - 10:55 AM Room N (School of Eng. Bildg. 2F 521)

Chair:Takashi TAKATA(UTokyo)

9:30 AM - 9:45 AM

[2N01] A Framework of RI-PB Design Application for Seismic Events

Part 14: Proposal of Practical Method of Risk Decomposition Considering the Balance Between Safety and Cost

*Toshiaki Sakai¹, Yasuki Ohtori², Hitoshi Muta², Yoshifumi Katayama³ (1. CRIEPI, 2. TCU, 3. Chuden Engineering Consultants)

9:45 AM - 10:00 AM

[2N02] Evaluation of Seismic Diversity of SSC system in PRA

Part6 : Application of the Response Surface Method to the Seismic Diverse System in Actual Seismic Environment

*Yoshifumi Katayama¹, Yasuki Ohtori², Hitoshi Muta², Toshiaki Sakai³ (1. Chuden Engineering Consultants, 2. TCU, 3. CRIEPI)

10:00 AM - 10:15 AM

[2N03] Copula for evaluating the seismic risk of a system considering correlation

*Yasuki Ohtori¹, Hitoshi Muta¹ (1. Tokyo City University)

10:15 AM - 10:30 AM

[2N04] Research on seismic risk assessment of large-scale and complex systems using quantum computers

(1) Basic study on application for FT

*Shota Terayama¹, Yasuki Ohtori¹, Hitoshi Muta¹ (1. TCU)

10:30 AM - 10:45 AM

[2N05] Research on Seismic Correlation for PRA

Part 4 Effect of building nonlinearities on response correlation between components with different vibration characteristics

*Masahiro Ourai¹, Yasuki Ohtori¹, Hitosi Muta¹, Masato Nakazima¹ (1. TCU)

Time reserved for Chair （10:45 AM - 10:55 AM）

Oral presentation

[2N06-09] Seismic PRA 2

Thu. Sep 7, 2023 10:55 AM - 12:00 PM Room N (School of Eng. Bildg. 2F 521)

Chair:Hitoshi MUTA(TCU)

10:55 AM - 11:10 AM

[2N06] Evaluation on Seismic damage Inference for mass-spring damper structure using Bayesian Theorem

*Kosei Kawamata¹, Sunghyon Jang¹, Munemichi Kawaguchi¹, Kazuhiro Sawa¹, Shuhei Matsunaka², Hideo Machida² (1. Hokkaido Univ., 2. TEPSYS)

11:10 AM - 11:25 AM

[2N07] Industry's efforts to refine scenarios directly lead to the core damage in Seismic PRA (Pilot study)

*Takahiro WATANABE¹, Kazumasa SUZUE², Ryusuke HARAGUCHI³, Takashi KATO⁴, Shuhei MATSUNAKA⁵, Bumpei FUJIOKA⁶, Kensuke TOYOSHIMA⁷ (1. TEPCO HD, 2. KEPCO, 3. MHI, 4. TOSHIBA ESS, 5. TEPSYS, 6. HGNE, 7. NEL)

11:25 AM - 11:40 AM

[2N08] Study on the improved fragility evaluation method of electrical raceways (1) Outline of study plan

*Tomokazu Higuchi¹, Tatsuya Oku¹, Tomoyuki Fukuoka¹, Naotomo Maruyama², Shinji Kosugi³, Ryusuke Haraguchi⁴, Masatsugu Bando⁵, Ryuta Shimosakoda⁶, Shinichi Hisatomi⁶, Ryotaro Tatsuzawa⁶ (1. TOSHIBA ESS, 2. HGNE, 3. Hitachi, 4. MHI, 5. MHI NS Engineering, 6. TEPCO HD)

11:40 AM - 11:55 AM

[2N09] Hazard Analysis for Simplified PRA at NSRR

*Yuiko Motome¹, Hitoshi Tamaki¹, Masaki Amaya¹, Taisuke Yonomoto¹ (1. JAEA)

Time reserved for Chair （11:55 AM - 12:00 PM）

Sessions

IV. Nuclear Plant Technologies » 403-1 Risk Assessment Technology, Application of Risk Information

[1N01-07] PRA Method

(1)Shutdown time conversion factor for simplified exposure assessment considering scenario characteristics

(2)Study of diffusion calculation methods for simplified exposure assessment

Proposal of Combination Importance

[1N08-13] Seismic-tsunami

(1) Development Concept of Superposition PRA

(2) Analysis of superposition scenario

(3) Evaluation method of superposed hazards and enhancement of seismic hazard evaluation

(4) Development of tsunami scenarios for fragility analysis

(5) Target screening for fragility analysis of outdoor facilities and leakage impact estimation of watertight door

(6) Accident sequence analysis

[1N14-19] Dynamic & Multi-hazards PRA

(1) The Concept and Measures of Risk Importance

(2) Survey on Nuclear Regulatory Applications and Trial Calculation with Dynamic Level 2 PRA

Part 1: Research Plan and Aim

Part 2: Results of literature survey on the classification and modeling methods of multi-hazards

Part 3: Proposal of damage assessment method for multiple equipment based on three-dimensional seismic response behavior of reactor building

Part 4: Recent improvement of system reliability analysis code SECOM2-DQFM

[2N01-05] Seismic PRA 1

Part 14: Proposal of Practical Method of Risk Decomposition Considering the Balance Between Safety and Cost

Part6 : Application of the Response Surface Method to the Seismic Diverse System in Actual Seismic Environment

(1) Basic study on application for FT

Part 4 Effect of building nonlinearities on response correlation between components with different vibration characteristics

[2N06-09] Seismic PRA 2

Authentication