Oral presentation

[2G01-08] External Event PRA

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

chair: Takahiro Kuramoto (NEL)

9:45 AM - 10:00 AM

[2G01] A Framework of RI-PB Design Application for Seismic Events

Part10: Evaluation of seismic diversity using inter-period correlation based on strong ground motion simulation

*Yoshifumi Katayama¹, Yoshiaki Shiba², Yasuki Ohtori³, Toshiaki Sakai², Hitoshi Muta³ (1. Chuden Engineering Consultants, 2. CRIEPI, 3. Tokyo City University)

10:00 AM - 10:15 AM

[2G02] Application of Portfolio theory for balancing seismic risk profile of NPPs

(1)Proposal of balancing methodology

*Yasuki Ohtori¹, Sakai Toshiaki², Hitoshi muta¹ (1. TCU, 2. CRIEPI)

10:15 AM - 10:30 AM

[2G03] Evaluation methodologies of non-linear response coefficient in piping system fragility assessment in seismic PRA

*Yohei Ono¹, Michiya Sakai¹, Ryuya Shimazu¹ (1. CRIEPI)

10:30 AM - 10:45 AM

[2G04] Construction of the technical basis for tsunami PRA

Part14: Tsunami Level 2 PRA for Actual Nuclear Power Plant (1)Evaluation Outline

*Satoshi Nishimura¹, Motomu Suzuki¹, Masaaki Satake¹, Hiromichi Miura¹, Atsushi Ui¹, Takayuki Hirouchi², Nobuhiro Hara², Takashi Kato², Yuji Komori², Ryuu Kobayashi³ (1. CRIEPI, 2. TOSHIBA ESS, 3. Chubu Electric Power)

10:45 AM - 11:00 AM

[2G05] Construction of the technical basis for tsunami PRA

Part15: Tsunami Level 2 PRA for Actual Nuclear Power Plant (2)Release Category Classification

*Takayuki Hirouchi¹, Nobuhiro Hara¹, Takashi Kato¹, Yuji Komori¹, Masaaki Satake², Motomu Suzuki², Satoshi Nishimura², Hiromichi Miura², Ryuu Kobayashi³ (1. TOSHIBA ESS, 2. CRIEPI, 3. Chubu Electric Power)

11:00 AM - 11:15 AM

[2G06] Construction of the technical basis for tsunami PRA

Part16: Tsunami Level 2 PRA for Actual Nuclear Power Plant (3)Source Term Evaluation

*Masaaki Satake¹, Yoshimi Sasaki², Satoshi Nishimura¹, Motomu Suzuki¹, Takayuki Hirouchi³, Nobuhiro Hara³, Ryuu Kobayashi⁴ (1. CRIEPI, 2. BNT, 3. TOSHIBA ESS, 4. Chubu Electric Power)

11:15 AM - 11:30 AM

[2G07] Construction of the technical basis for tsunami PRA

Part17: Tsunami Level 2 PRA for Actual Nuclear Power Plant (4)Uncertainty Evaluation

*Motomu Suzuki¹, Atsushi Ui¹, Satoshi Nishimura¹, Masaaki Satake¹, Yoshimi Sasaki², Takayuki Hirouchi³, Nobuhiro Hara³, Takashi Kato³, Yuji Komori³, Ryuu Kobayashi⁴ (1. CRIEPI, 2. BNT, 3. TOSHIBA ESS, 4. Chubu Electric Power)

11:30 AM - 11:45 AM

[2G08] Construction of the technical basis for tsunami PRA

Part18: Estimation of time-dependent core damage probability using success criteria analysis as training data

*Atsushi Ui¹, Motomu Suzuki¹, Ryuu Kobayashi² (1. CRIEPI, 2. Chubu Electric Power)

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

Oral presentation

[2G09-13] PRA Application

Thu. Sep 9, 2021 2:45 PM - 4:15 PM Room G

chair: Hitoshi Muta (TCU)

2:45 PM - 3:00 PM

[2G09] Feature evaluation of radiation exposure in vent scenarios with FCVS

*Kodai Wadayama¹, Ryohei Ichikawa¹, Retsu Kojo¹, Chihiro Suzuki¹ (1. NRA)

3:00 PM - 3:15 PM

[2G10] Hazard curve analysis for heavy snowfalls risk

*Risako Nakashima¹, Akari Koike¹, Takaaki Sakai¹ (1. Tokai Univ.)

3:15 PM - 3:30 PM

[2G11] Development of risk assessment method to cope with an aging degradation for the facilities using nuclear material.

(1)Risk point evaluation of aging equipment

*Ryosuke Isozaki¹, Yuichi Tamaoki¹, Ryuta Suzuki¹, Masataka Akada¹, Satoshi Sawahata¹, Hisashi Suzuki¹, Ryoma Yonezawa¹, Yasutaka Mizukoshi¹, Naoki Sakamoto¹, Tadatsune Fujishima¹ (1. JAEA)

3:30 PM - 3:45 PM

[2G12] Human Error Probability Evaluation Method for Direction and Report between Emergency Operations Facility and Outside

*Daisuke Takeda¹, Yukihiro Kirimoto¹, Kenichi Hayase¹, Kohei Nonose¹ (1. CRIEPI)

3:45 PM - 4:00 PM

[2G13] Study on reliability evaluation of confinement function under the decommissioning of accident-damaged nuclear reactor

*Takayuki Aoki¹, Takuma Nozaki², Atsuo Ikeda², Takayuki Negishi², Takeshi Morita² (1. Tohoku University, 2. Nuclear Engineering and Services Company)

Time reserved for Chair （4:00 PM - 4:15 PM）

Oral presentation

[2G14-17] PRA Methodology

Thu. Sep 9, 2021 4:15 PM - 5:30 PM Room G

chair: Yoshihiro Ide (AdvanceSoft)

4:15 PM - 4:30 PM

[2G14] Development of Dynamic PRA Using Multi-Fidelity Models

*Xiaoyu Zheng¹, Hitoshi Tamaki¹, Tomoyuki Sugiyama¹, Yu Maruyama¹ (1. JAEA)

4:30 PM - 4:45 PM

[2G15] Research on Importance Analysis Method Applicable to Multi-Unit Dynamic PRA

*Tomomi Hanai¹, Satoshi Shinzaki¹, Takamasa Kurokawa¹, Kensuke Toyoshima¹, Masayuki Hijiya¹, Sunghyon Jang², Akira Yamaguchi² (1. NEL, 2. UTokyo)

4:45 PM - 5:00 PM

[2G16] Evaluation of Human Error Probability Considering Multi-unit Effect Using Fuzzy Inference

*Sunghyon Jang¹, Akira Yamaguchi¹, Tomomi Hanai², Satoshi Shinzaki², Takamasa Kurokawa², Kensuke Toyoshima², Masayuki Hijiya² (1. The University of Tokyo, 2. Nuclear Engineering, Ltd)

5:00 PM - 5:15 PM

[2G17] Trial Evaluation of Human Error Probability of External Events by IDHEAS Method

*Takuro Tobo¹, Nobuhisa Takezawa¹, Go Tanaka¹, Yuji Komori¹, Hiroyuki Takeuchi¹ (1. TOSHIBA ESS)

Time reserved for Chair （5:15 PM - 5:30 PM）

Sessions

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

[2G01-08] External Event PRA

[2G01] A Framework of RI-PB Design Application for Seismic Events

Part10: Evaluation of seismic diversity using inter-period correlation based on strong ground motion simulation

[2G02] Application of Portfolio theory for balancing seismic risk profile of NPPs

(1)Proposal of balancing methodology

[2G03] Evaluation methodologies of non-linear response coefficient in piping system fragility assessment in seismic PRA

[2G04] Construction of the technical basis for tsunami PRA

Part14: Tsunami Level 2 PRA for Actual Nuclear Power Plant (1)Evaluation Outline

[2G05] Construction of the technical basis for tsunami PRA

Part15: Tsunami Level 2 PRA for Actual Nuclear Power Plant (2)Release Category Classification

[2G06] Construction of the technical basis for tsunami PRA

Part16: Tsunami Level 2 PRA for Actual Nuclear Power Plant (3)Source Term Evaluation

[2G07] Construction of the technical basis for tsunami PRA

Part17: Tsunami Level 2 PRA for Actual Nuclear Power Plant (4)Uncertainty Evaluation

[2G08] Construction of the technical basis for tsunami PRA

Part18: Estimation of time-dependent core damage probability using success criteria analysis as training data

[2G09-13] PRA Application

[2G09] Feature evaluation of radiation exposure in vent scenarios with FCVS

[2G10] Hazard curve analysis for heavy snowfalls risk

[2G11] Development of risk assessment method to cope with an aging degradation for the facilities using nuclear material.

(1)Risk point evaluation of aging equipment

[2G12] Human Error Probability Evaluation Method for Direction and Report between Emergency Operations Facility and Outside

[2G13] Study on reliability evaluation of confinement function under the decommissioning of accident-damaged nuclear reactor

[2G14-17] PRA Methodology

[2G14] Development of Dynamic PRA Using Multi-Fidelity Models

[2G15] Research on Importance Analysis Method Applicable to Multi-Unit Dynamic PRA

[2G16] Evaluation of Human Error Probability Considering Multi-unit Effect Using Fuzzy Inference

[2G17] Trial Evaluation of Human Error Probability of External Events by IDHEAS Method

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