Oral presentation

[1I01-06] Fuel Debris Characterization

Wed. Sep 8, 2021 10:10 AM - 11:55 AM Room I

chair: Rei Kimura (TOSHIBA ESS)

10:10 AM - 10:25 AM

[1I01] The possible use of short half-life noble gas fission products for measurement of criticality and identification of plutonium in fuel debris canister

*Eka Sapta Riyana¹, Keisuke Okumura¹, Masahiro Sakamoto¹, Taichi Matsumura¹, Kenichi Terashima¹ (1. JAEA)

10:25 AM - 10:40 AM

[1I02] Analysis of Effective Multiplication Factor in Sedimentation of Fuel Debris Particles

*Shigeki Shiba¹ (1. Regulatory Standard and Research Department, Secretariat of Nuclear Regulation Authority)

10:40 AM - 10:55 AM

[1I03] Development of the insoluble neutron absorbers using self-assembled surfactant aggregates

(5)Evaluation of fluidity and model debris adhesive property

*Ryota Nambara¹, Takuji Kume¹, Noriaki Ushio¹ (1. KAO)

10:55 AM - 11:10 AM

[1I04] Improvement of the STACY critical assembly to measure critical characteristics of fuel debris

(1)Overview and progress of the modified STACY

*Shouhei Araki¹, Kazuhiko Izawa¹, Satoshi Gunji¹, Kenya Suyama¹, Junichi Ishii¹, Masakazu Seki¹, Fuyumi Kobayashi¹, Hiroyuki Fukaya¹ (1. JAEA)

11:10 AM - 11:25 AM

[1I05] Improvement of the STACY critical assembly to measure critical characteristics of fuel debris

(2)Computations for reactivity measurements of pseudo fuel debris

*Satoshi Gunji¹, Shouhei Araki¹, Kenya Suyama¹, Kazuhiko Izawa¹ (1. JAEA)

11:25 AM - 11:40 AM

[1I06] Whole Core Three-Dimensional Nuclide Inventory Calculation of the Fukushima Daiichi Nuclear Power Station

(3)Activation Calculation Method for Upper and Lower Structural Materials of Fuel Assemblies

*Masahiro Sakamoto¹, Keisuke Okumura¹, Kenichi Tada¹, Kenji Nishihara¹, Shinya Mizokami², Masato Mizokami², Yousuke Miki³, Seiji Kaneko³ (1. JAEA, 2. TEPCO HD, 3. TEPSYS)

Time reserved for Chair （11:40 AM - 11:55 AM）

Oral presentation

[1I07-10] Reactor Noise Measurement & Analysis

Wed. Sep 8, 2021 2:45 PM - 3:55 PM Room I

chair: Kenichi Tada (JAEA)

2:45 PM - 3:00 PM

[1I07] Development of reactor noise measurement by using BGO detector in UTR-KINKI

(2)Measurement of prompt-neutron decay constant

*Masaki Goto¹, Tadafumi Sano¹, Atsushi Sakon¹, Kunihiro Nakajima¹, Takashi Kanda¹, Shoichi Ikeda¹, Hiroyuki Fukuda¹, Koji Matsui¹, Yasunori Matsuo¹, Kengo Hashimoto¹ (1. KINDAI Univ.)

3:00 PM - 3:15 PM

[1I08] A Study for Reactor Noise Measurement in Power Operation at Kyoto Univ. Reactor Part.4

*Sin-ya Hohara¹, Atsushi Sakon¹, Kunihiro Nakajima², Takashi Kanda², Masaki Goto², Tadafumi Sano¹, Jyunichi Hori³, Kengo Hashimoto¹ (1. Kindai Univ. AERI, 2. Graduate School of Sci. and Eng., Kindai Univ., 3. Institute for Integrated Radiation and Nuclear Science, Kyoto Univ.)

3:15 PM - 3:30 PM

[1I09] Application of Dynamic Mode Decomposition to Reactor Noise Analysis Method

(1)Application to Rossi-α method

*Fuga Nishioka¹, Tomohiro Endo¹, Akio Yamamoto¹, Kenichi Watanabe², Cheol Ho Pyeon³ (1. Nagoya University, 2. Kyushu University, 3. Institute for Integrated Radiation and Nuclear Science, Kyoto University)

3:30 PM - 3:45 PM

[1I10] Application of Dynamic Mode Decomposition to Reactor Noise Analysis Method

(2)Statistical Uncertainty Quantification Using Bootstrap Method

*Tomohiro Endo¹, Fuga Nishioka¹, Akio Yamamoto¹, Kenichi Watanabe², Cheol Ho Pyeon³ (1. Nagoya Univ., 2. Kyushu Univ., 3. Kyoto Univ.)

Time reserved for Chair （3:45 PM - 3:55 PM）

Oral presentation

[1I11-14] Subcriticality Measurement

Wed. Sep 8, 2021 3:55 PM - 5:05 PM Room I

chair: Kunihiro Nakajima (Kindai Univ.)

3:55 PM - 4:10 PM

[1I11] Development of Uncertainty Evaluation Methodology for Sub-Criticality Monitoring using Prompt Neutron Decay Constant

*Hiroki Koike¹, Koji Asano¹, Daisuke Sato¹ (1. MHI)

4:10 PM - 4:25 PM

[1I12] Criticality control technique development for Fukushima Daiichi fuel debris

(52)Sub-criticality monitoring test for heterogeneous core configuration in KUCA

*Satoshi Wada^1,2, Shinya Kano^1,2, Hiroyuki Yazawa^1,2, Tsuyoshi Misawa³, Yasunori Kitamura³ (1. IRID, 2. TOSHIBA ESS, 3. Kyoto Univ.)

4:25 PM - 4:40 PM

[1I13] Criticality control technique development for Fukushima Daiichi fuel debris

(53)Simulation of sub-criticality measurement for heterogeneous fuel debris

*Makoto Shimizu^1,2, Shinya Kano^1,2, Satoshi Wada^1,2 (1. IRID, 2. TOSHIBA ESS)

4:40 PM - 4:55 PM

[1I14] Investigation of numerical analysis of the prompt-neutron decay constant of a subcritical reactor

*Motoyuki Nakajima¹, Willem van Rooijen¹ (1. Univ. of Fukui)

Time reserved for Chair （4:55 PM - 5:05 PM）

Oral presentation

[2I01-02] Analysis Technique Development 1

Thu. Sep 9, 2021 9:30 AM - 10:10 AM Room I

chair: Koichi Ieyama (MHI)

9:30 AM - 9:45 AM

[2I01] Verification on a surrogate model for Monte-Carlo based on the linear approximation using a sensitivity coefficient matrix

*Hibiki Yamaguchi¹, Yuhei Fukui¹, Tomohiro Endo¹, Akio Yamamoto¹ (1. Nagoya Univ.)

9:45 AM - 10:00 AM

[2I02] Application of region-wise even-parity discontinuity factor to the Monte-Carlo calculation

*Yoshiki Oshima¹, Tomohiro Endo¹, Akio Yamamoto¹, Naoto Aizawa² (1. Nagoya Univ., 2. Tohoku Univ.)

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

Oral presentation

[2I03-08] Analysis Technique Development 2

Thu. Sep 9, 2021 10:10 AM - 11:55 AM Room I

chair: Tomoaki Watanabe (JAEA)

10:10 AM - 10:25 AM

[2I03] Low-order model for time behavior of nuclide number densities with radioactive decay

*Yu Yoshifuji¹, Go Chiba¹, Masato Tabuchi², Kotaro Sato² (1. Hokkaido Univ., 2. NEL)

10:25 AM - 10:40 AM

[2I04] Cross Section Reproduction Method for Three-Dimensional Heterogenious Transient Analysis Code

(1)Basic Study on Fuel Pin-Cell Geometry Problem

*Tatsuya Fujita¹ (1. NRA)

10:40 AM - 10:55 AM

[2I05] Treatment of scattering sources in numerical calculations of the radiative transfer equation with discrete ordinates methods

(2)Comparisons on problems with enhanced neutron anisotropy

*Ryosuke Shimizu¹, Go Chiba¹ (1. HokkaidoUniv.)

10:55 AM - 11:10 AM

[2I06] Applicability of a neutron transport method to treatment of light reflection in biological tissue

*Masato Ito¹, Toranosuke Amano¹, Tomohiro Endo¹, Akio Yamamoto¹ (1. Nagoya Univ.)

11:10 AM - 11:25 AM

[2I07] Investigation of three-dimensional neutron transport calculations with the IGA method

*Ryo Ohira¹, Willem van Rooijen¹ (1. Univ. of Fukui)

11:25 AM - 11:40 AM

[2I08] Schematic evaluation of burnup behavior based on core-scale spectral evaluation in graphite moderated systems

*Katsuki Fukuhara¹, Nozomu Fujimoto¹, Yuji Fukaya², Hai Quan Ho², Satoru Nagasumi², Toshiaki Ishii², Shinpei Hamamoto², Etsuo Ishitsuka² (1. Kyushu Univ., 2. JAEA)

Time reserved for Chair （11:40 AM - 11:55 AM）

Oral presentation

[2I09-13] Critical Experiment Analysis

Thu. Sep 9, 2021 2:45 PM - 4:10 PM Room I

chair: Tomohiro Endo (Nagoya Univ.)

2:45 PM - 3:00 PM

[2I09] Core power distribution re-construction method based on the ex-core detector with power correlation between fuel regions

(3)Principle verification using UTR-KINKI

*Rei Kimura¹, Yuki Nakai¹, Satoshi Wada¹, Tadafumi Sano², Atsushi Sakon² (1. TOSHIBA ESS, 2. Kindai Univ.)

3:00 PM - 3:15 PM

[2I10] Core power distribution re-construction method based on the ex-core detector with power correlation between fuel regions

(4)Evaluation of dependence on interaction coefficient between fuels

*Yuki Nakai¹, Rei Kimura¹, Satoshi Wada¹ (1. Toshiba ESS)

3:15 PM - 3:30 PM

[2I11] Measurement of CaH₂ sample worth with various weights

*Takashi Kanda¹, Kunihiro Nakajima¹, Masaki Goto¹, Shoichi Ikeda¹, Koji Matsui¹, Hiroyuki Fukuda¹, Yasunori Matsuo¹, Atsushi Sakon¹, Tadafumi Sano¹, Kengo Hashimoto¹ (1. Kindai Univ.)

3:30 PM - 3:45 PM

[2I12] Effect of Activation Reaction Rate on Epithermal to Intermediate neutron in Reactor Experiment

(1)Measurement and Analysis of Reaction Rate in Critical Irradiation Experiment

*Naoto Aizawa¹, Cheol Ho Pyeon² (1. Tohoku Univ., 2. Kyoto Univ.)

3:45 PM - 4:00 PM

[2I13] An impact of Inherent Neutron Source on Criticality in UTR-KINKI

*Koji Matsui¹, Tadafumi Sano¹, Atsushi Sakon¹, Kunihiro Nakajima¹, Takashi Kanda¹, Masaki Goto¹, Yasunori Matsuo¹, Hiroyuki Fukuda¹, Shoichi Ikeda¹, Kengo Hashimoto¹ (1. Kindai Univ.)

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

Oral presentation

[2I14-15] PIE Analysis

Thu. Sep 9, 2021 4:10 PM - 4:50 PM Room I

chair: Satoshi Wada (TOSHIBA ESS)

4:10 PM - 4:25 PM

[2I14] Measurement and Analysis by SWAT4.0 of Isotopic Composition of PWR High-burnup Lead Use Assembly

*Tomoaki Watanabe¹, Takeo Kikuchi¹, Kotaro Tonoike¹, Kenya Suyama¹ (1. JAEA)

4:25 PM - 4:40 PM

[2I15] Application of Moderator Density Model Based on Gamma Scanning to PIE analysis

*Shunsuke Sato¹, Yasushi Nauchi¹ (1. CRIEPI)

Time reserved for Chair （4:40 PM - 4:50 PM）

Oral presentation

[2I16-19] Uncertainty Evaluation

Thu. Sep 9, 2021 4:50 PM - 6:00 PM Room I

chair: Shunsuke Sato (CRIEPI)

4:50 PM - 5:05 PM

[2I16] Core Characteristics of Molten Chloride Salt Fast Reactor and its Dependency on Nuclear Data of Chlorine-35

*Yoshihisa Tahara¹, Tsunenori Inakura¹, Satoshi Chiba¹ (1. Tokyo Tech)

5:05 PM - 5:20 PM

[2I17] Uncertainty Quantification of Reactivity in KUCA-C cores with HEU Fuel

*Kota Morioka¹, Cheolho Pyeon¹ (1. Kyoto Univ.)

5:20 PM - 5:35 PM

[2I18] Improvement of an uncertainty evaluation method in a shielding design

(1)Study of an estimation method for nuclear data-induced uncertainties in the multi-layer analyses

*Ikuo Fukuchi¹, Hiroyuki Saito¹, Akio Yamamoto² (1. MFBR, 2. Nagoya Univ.)

5:35 PM - 5:50 PM

[2I19] Improvement of high-efficiency random sampling method by using control variates method and sensitivity

(3)The CV-S method by using the virtual mockup parameter combined by multiple parameters

*Takumi Kida¹, Go Chiba¹ (1. Hokkaido Univ.)

Time reserved for Chair （5:50 PM - 6:00 PM）

Oral presentation

[3I01-05] Analysis Code Development

Fri. Sep 10, 2021 9:30 AM - 11:00 AM Room I

chair: Satoshi Takeda (Osaka Univ.)

9:30 AM - 9:45 AM

[3I01] Development of FRENDY/MG (3)Automated generation of background cross section set

*Akio Yamamoto¹, Tomohiro Endo¹, Kenichi Tada² (1. Nagoya Univ., 2. JAEA)

9:45 AM - 10:00 AM

[3I02] Development of Nuclides Generation and Depletion Code "S-Decay" for Education

*Tetsuo Matsumura¹, Takanori Kameyama¹ (1. Tokai U)

10:00 AM - 10:15 AM

[3I03] Verification of burnup calculation capability of a code system CBZ

(1)Comparison with MVP-BURN

*Go Chiba¹, Hiroki Harada¹ (1. Hokkaido Univ.)

10:15 AM - 10:30 AM

[3I04] Verification of burnup calculation capability of a code system CBZ

(2)Error-source identification using the generalized least squares method

*Hiroki Harada¹, Go Chiba¹ (1. Hokkaido Univ.)

10:30 AM - 10:45 AM

[3I05] Development of SCOPE2, Core Calculation Code Based on 3-D Fine-Mesh Multi-Group Transport Calculation for PWR

(15)Application of Advanced Optimally-Weighted Predictor-Corrector Method

*Kento Yamamoto¹, Yasuhiro Kodama¹, Hiroaki Nagano¹, Go Chiba² (1. NFI, 2. Hokkaido Univ.)

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

Oral presentation

[3I06-08] Cross Section Adjustment

Fri. Sep 10, 2021 11:00 AM - 11:55 AM Room I

chair: Go Chiba (Hokkaido Univ.)

11:00 AM - 11:15 AM

[3I06] Development of Mitsubishi FBR Nuclear Design Code System GALAXY-H/ENSEMBLE-TRIZ

(9)Extended Cross-Section Adjustment Methodology based on Random Sampling Technique

*Koichi Ieyama¹, Hiroki Koike¹, Koji Asano¹, Yohei Kamiyama² (1. MHI, 2. MFBR)

11:15 AM - 11:30 AM

[3I07] A Nuclear Data Adjustment Method based on a Deterministic Sampling Method

*Yuhei Fukui¹, Tomohiro Endo¹, Akio Yamamoto¹ (1. Nagoya University)

11:30 AM - 11:45 AM

[3I08] Discussion on necessity of adjustment for all cross-sections and covariances in cross-section adjustment method

*Satoshi Takeda¹, Takanori Kitada¹ (1. Osaka University)

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

Sessions

III. Fission Energy Engineering » 301-1 Reactor Physics, Utilization of Nuclear Data, Criticality Safety

[1I01-06] Fuel Debris Characterization

(5)Evaluation of fluidity and model debris adhesive property

(1)Overview and progress of the modified STACY

(2)Computations for reactivity measurements of pseudo fuel debris

(3)Activation Calculation Method for Upper and Lower Structural Materials of Fuel Assemblies

[1I07-10] Reactor Noise Measurement & Analysis

(2)Measurement of prompt-neutron decay constant

(1)Application to Rossi-α method

(2)Statistical Uncertainty Quantification Using Bootstrap Method

[1I11-14] Subcriticality Measurement

(52)Sub-criticality monitoring test for heterogeneous core configuration in KUCA

(53)Simulation of sub-criticality measurement for heterogeneous fuel debris

[2I01-02] Analysis Technique Development 1

[2I03-08] Analysis Technique Development 2

(1)Basic Study on Fuel Pin-Cell Geometry Problem

(2)Comparisons on problems with enhanced neutron anisotropy

[2I09-13] Critical Experiment Analysis

(3)Principle verification using UTR-KINKI

(4)Evaluation of dependence on interaction coefficient between fuels

(1)Measurement and Analysis of Reaction Rate in Critical Irradiation Experiment

[2I14-15] PIE Analysis

[2I16-19] Uncertainty Evaluation

(1)Study of an estimation method for nuclear data-induced uncertainties in the multi-layer analyses

(3)The CV-S method by using the virtual mockup parameter combined by multiple parameters

[3I01-05] Analysis Code Development

(1)Comparison with MVP-BURN

(2)Error-source identification using the generalized least squares method

(15)Application of Advanced Optimally-Weighted Predictor-Corrector Method

[3I06-08] Cross Section Adjustment

(9)Extended Cross-Section Adjustment Methodology based on Random Sampling Technique

Authentication