• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

TM-EFP: an inovative numerical model for nuclear reactor transient analyses

Research Project

Project/Area Number 16K18344
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Nuclear engineering
Research InstitutionHokkaido University

Principal Investigator

Chiba Go  北海道大学, 工学研究院, 准教授 (50421524)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords原子炉動特性解析 / 遅発中性子 / 核分裂生成物 / 行列指数法 / FP漏洩 / 空間依存動特性 / マルカート法 / 最小二乗法 / 原子炉動特性
Outline of Final Research Achievements

Delayed neutrons play an important role in nuclear energy utilization by human being, and delayed neutron emission is important physical phenomena which should be considered especially in safety analyses of nuclear reactors. The conventional model which has been widely and generally used in the world introduces an approximation that various fission product nuclides are treated as small number of fictitious nuclides, but we propose and develop a more sophisticated model which can handle with all the fission product nuclides explicitly and realize spatially-dependent nuclear reactor kinetics calculations with this model. As an example, nuclear reactor transient problems with leakage of gaseous fission product nuclides are carried out, and effectiveness of this model is demonstrated.

Academic Significance and Societal Importance of the Research Achievements

原子炉の安全設計において重要となる遅発中性子の放出に関しては近似的なモデルを導入することが一般的である。その精度は十分に担保されているものの、近似的なモデルであるが故の制限があり、それが安全設計における過大な設計余裕に繋がっている可能性がある。本研究は、遅発中性子放出に関するより厳密なモデルを空間依存の問題に世界で初めて適用したものであり、原子炉動特性解析分野における学術的意義は極めて大きい。また、本研究で開発したモデルの導入により、これまで考慮せざるを得なかった設計余裕を適正化できる可能性があり、社会的な意義も大きいと考える。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2018 2017

All Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] Spatially Dependent Kinetic Calculations with Explicit Fission Product Model2018

    • Author(s)
      Koji Katagiri, Go Chiba
    • Organizer
      2018 winter meeting of American Nuclear Society
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 核分裂生成物核種を陽に取り扱った空間依存動特性解析(2)全てのFPを陽に取り扱ったモデルの実装と検討2018

    • Author(s)
      片桐耕司、千葉豪
    • Organizer
      日本原子力学会2018年秋の年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 核分裂生成物核種を陽に取り扱った空間依存動特性解析2018

    • Author(s)
      片桐耕司、千葉豪、奈良林直
    • Organizer
      日本原子力学会2018年春の年会
    • Related Report
      2017 Research-status Report
  • [Presentation] Nuclear Reactor One-Point Kinetic Calculations with Explicit Fission Product Model2017

    • Author(s)
      Koji Katagiri, Go Chiba
    • Organizer
      The Reactor Physics Asia 2017 (RPHA17) Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 核分裂生成物核種を陽に取り扱った一点炉動特性解析2017

    • Author(s)
      片桐耕司、千葉豪、奈良林直
    • Organizer
      日本原子力学会2017年秋の大会
    • Related Report
      2017 Research-status Report
  • [Presentation] EFPモデルによる原子炉動特性解析の高度化に関する研究2017

    • Author(s)
      片桐耕司、千葉豪
    • Organizer
      日本原子力学会北海道支部第34回研究発表会
    • Place of Presentation
      北海道大学
    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi