Study on application of neutron resonance densitometry to non-destractive assay for spent nuclear fuel

• Project/Area Number: 24760714
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nuclear engineering
• Research Institution: Kyoto University
• Principal Investigator: HORI Jun-ichi 京都大学, 原子炉実験所, 助教 (30362411)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 核燃料物質 / 共鳴 / パルス中性子 / 中性子飛行時間法 / 中性子捕獲ガンマ線 / 中性子共鳴 / パルス中性子源 / 非破壊分析 / 即発ガンマ線

Outline of Final Research Achievements

In this study, we proposed a new concept of the "self-indication method" combined with neutron resonance transmission analysis and neutron resonance capture analysis for non-destructive assay using a pulsed neutron source. It was confirmed that the effective thickness of target nuclide can be determined within 3 % accuracy by experimental validation. Moreover, the results indicated that the self-indication method has a high-sensitivity for assaying target nuclide in a mixture material such as spent nuclear fuels.

Research Products

• [Journal Article] Development of Nondestructive Assay to Fuel Debris of Fukushima Daiichi NPP (1): Experimental Validation for the Application of a Self-Indication Method (2014)
  • Author(s): J. Hori, T. Sano, Y. Takahashi, H. Unesaki, K. Nakajima
  • Journal Title: Nuclear Back-end and Transmutation Technology for Waste Disposal Volume: 1 Pages: 21-29
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Development of Nondestructive Assay to Fuel Debris of Fukushima Daiichi NPP (2): Numerical Validation for the Application of a Self-Indication Method (2014)
  • Author(s): T. Sano, J. Hori, Y. Takahashi, H. Unesaki, K. Nakajima
  • Journal Title: Nuclear Back-end and Transmutation Technology for Waste Disposal Volume: 1 Pages: 31-37
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 中性子共鳴吸収を用いた核種定量のための非破壊分析法の開発（１）Self-indication法の適用性評価のための基礎実験 (2013)
  • Author(s): 堀 順一、佐野 忠史、高橋 佳之、宇根崎 博信、中島 健
  • Organizer: 日本原子力学会春の大会
  • Place of Presentation: 近畿大学
• [Presentation] 中性子共鳴吸収を用いた核種定量のための非破壊分析法の開発（２）Self-indication法の応用に向けた予備計算 (2013)
  • Author(s): 佐野 忠史、堀 順一、高橋 佳之、宇根崎 博信、中島 健
  • Organizer: 日本原子力学会春の大会
  • Place of Presentation: 近畿大学
• [Presentation] Development of non-destructive assay to fuel debris of Fukushima Daiichi NPP (1)Experimental validation for the application of a self-indication method
  • Author(s): J. Hori, T. Sano, Y. Takahashi, H. Unesaki, K. Nakajima
  • Organizer: Int. Symposium on Nuclear Back-end Issues and the Role of Nuclear Transmutation Technology after the accident of TEPCO's Fukushima Daiichi Nuclear Power Stations
  • Place of Presentation: Yoshida-Konoe-cho, Sakyo-ku, Kyoto, Japan
• [Presentation] Development of non-destructive assay to fuel debris of Fukushima Daiichi NPP (2)Numerical validation for the application of a self-indication method
  • Author(s): T. Sano, J. Hori, Y. Takahashi, H. Unesaki, K. Nakajima
  • Organizer: Int. Symposium on Nuclear Back-end Issues and the Role of Nuclear Transmutation Technology after the accident of TEPCO's Fukushima Daiichi Nuclear Power Stations
  • Place of Presentation: Yoshida-Konoe-cho, Sakyo-ku, Kyoto, Japan