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Investigation of natural radionuclides in fossil fuels

Research Project

Project/Area Number 16K16234
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Environmental policy and social systems
Research InstitutionNational Institutes for Quantum and Radiological Science and Technology (2018)
Hirosaki University (2016-2017)

Principal Investigator

Kazuki Iwaoka  国立研究開発法人量子科学技術研究開発機構, 放射線医学総合研究所放射線防護情報統合センター, 主任研究員(定常) (70466051)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords放射線被ばく / 放射線防護 / 放射性物質 / 被ばく防護 / 放射線
Outline of Final Research Achievements

Natural resources contain natural radioactive nuclides such as U-238 series, Th-232 series and K-40. In this study, radiological studies on fossil fuel (i.e. coal) were performed. Activity concentrations of U-238 series, Th-232 series and K-40 in coal are lower than the relevant values in the IAEA Safety Standards (10000 Bq/kg for K-40 and 1000Bq/kg for other natural radioactive nuclides).

Academic Significance and Societal Importance of the Research Achievements

現在までに、自然放射性物質を含む天然資源からの被ばくの実態について調査が実施され、いくつか物質については原子力規制庁より一定の被ばくの管理目安が導入されつつある(NORMガイドライン)。しかしながら、化石燃料については、その使用方法を含め、被ばくの状況についての情報が乏しく、規制管理の必要性を議論できるほどの十分な研究結果が得られていないため、その実態の解明が急がれている。本研究は、化石燃料等からの一般の作業者や公衆の被ばくの実態を明らかにすることを目指した研究課題である。

Report

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

    (21 results)

All 2018 2017 2016 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Acknowledgement Compliant: 1 results) Presentation (13 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Int'l Joint Research] フィリピン科学技術省フィリピン原子力研究所(フィリピン)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] フィリピン原子力研究所(フィリピン)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] フィリピン原子力研究所(フィリピン)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Preliminary Development of Thoron Exposure System in the Philippines2018

    • Author(s)
      Kazuki Iwaoka, Lorna Jean H. Palad, Eliza B. Enriquez, Fe M. dela Cruz, Christopher O. Mendoza, Masahiro Hosoda, Shinji Tokonami, Juanario U. Olivares, Ryan Joseph Aniago, Christian L. dela Sada
    • Journal Title

      Science Diliman

      Volume: 30 Pages: 5-13

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Installation of system at Hirosaki University, Japan, for estimating radionuclide atmospheric dispersion levels, Radiation Environment and Medicine2017

    • Author(s)
      Kazuki Iwaoka, Masahiro Hosoda, Shinji Tokonami
    • Journal Title

      Radiation Environment and Medicine

      Volume: 6 Pages: 104-104

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Utilization of Monte Carlo particle transport simulation code on radiation emergency medicine at Hirosaki University2017

    • Author(s)
      Kazuki Iwaoka, Masahiro Hosoda, Takakiyo Tsujiguchi, Minoru Osanai, Shinji Tokonami, Ikuo Kashiwakura
    • Journal Title

      Radiation Environment and Medicine

      Volume: 6 Pages: 108-108

    • NAID

      40021295144

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Investigation on natural radioactivity in a monazite processing plant in Japan2017

    • Author(s)
      Kazuki Iwaoka, Kazuaki Yajima, Toshikazu Suzuki, Hidenori Yonehara, Masahiro Hosoda, Shinji Tokonami, Reiko Kanda
    • Journal Title

      Health Physics

      Volume: 113 Pages: 220-220

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Measurements of radon exhalation rate in NORM used as consumer products in Japan2017

    • Author(s)
      Kazuki Iwaoka, Masahiro Hosoda, Kazuaki Yajima, Shinji Tokonami
    • Journal Title

      Applied Radiation and Isotopes

      Volume: 印刷中 Pages: 304-306

    • DOI

      10.1016/j.apradiso.2017.01.024

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 弘前大学のトロンガス曝露装置開発技術の活用2018

    • Author(s)
      岩岡和輝、LJ Parad、E Enriquez、F dela Cruz、細田正洋、床次眞司
    • Organizer
      日本保健物理学会第51回研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 測定環境に応じた空間線量率の核種別寄与比の導出―応答行列とモンテカルロ計算の活用2018

    • Author(s)
      岩岡和輝、細田正洋、床次眞司
    • Organizer
      日本保健物理学会第51回研究発表会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Absorbed dose rates in air along two industrial facilities in Leyte Island, Philippines2018

    • Author(s)
      L. Palad, C. Mendoza, F. Delacruz, J. Olivares, K. Iwaoka
    • Organizer
      9th International Conference on High Level Environmental Radiation Areas- For Understanding Chronic Low-Dose-Rate Radiation Exposure Health Effectsand Social Impacts (ICHLERA 2018)
    • Related Report
      2018 Annual Research Report
  • [Presentation] Status of research on NORM in Japan2017

    • Author(s)
      Kazuki Iwaoka
    • Organizer
      2017 National Workshop on Environmental Radioactivity Monitoring
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Collaboration work between Hirosaki University and PNRI2017

    • Author(s)
      Kazuki Iwaoka
    • Organizer
      2017 National Workshop on Environmental Radioactivity Monitoring
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Occupational Exposure to Natural Radiation in a Phosphate Fertilizer Facility in the Philippines2017

    • Author(s)
      Lorna Jean H. Palad, Fe M. Dela Cruz, Christopher O. Mendoza, Juanario Y. Olivarez and Kazuki Iwaoka
    • Organizer
      The 13th International Workshop on Ionizing Radiation Monitoring
    • Related Report
      2017 Research-status Report
  • [Presentation] Measurement of Natural Radioactivity in Philippine Cigarettes2017

    • Author(s)
      Kazuki Iwaoka, Eliza B. Enriquez, Kazuaki Yajima, Masahiro Hosoda, Shinji Tokonami, Hidenori Yonehara, Teofilo Y. Garcia
    • Organizer
      27th International conference on nuclear tracks and radiation measurements
    • Related Report
      2017 Research-status Report
  • [Presentation] ssues on natural radioactive nuclides in Japan2017

    • Author(s)
      Kazuki Iwaoka, Lorna Jean H. Palad, Eliza B. Enriquez, Masahiro Hosoda, Shinji Tokonami
    • Organizer
      2017 INTERNATIONAL WORKSHOP ON NATURAL RADIATION EXPOSURE TO THE PUBLIC AND ITS HEALTH EFFECTS
    • Related Report
      2017 Research-status Report
  • [Presentation] 弘前大学における物理学的線量評価機能の整備2017

    • Author(s)
      岩岡 和輝,細田 正洋,辻口 貴清,小山内 暢,床次 眞司,山田 正俊,柏倉 幾郎
    • Organizer
      日本放射線影響学会第60回大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 自然エネルギー関連施設における空間線量率の予備調査2016

    • Author(s)
      岩岡和輝、テオフィロ ガルシア、エリザ エンリケス、ローナジェーン パラド、クリストファー メンドーサ、細田正洋、床次眞司
    • Organizer
      日本保健物理学会第49回研究発表会
    • Place of Presentation
      弘前文化センター(弘前市)
    • Year and Date
      2016-06-30
    • Related Report
      2016 Research-status Report
  • [Presentation] 国内油田坑井から採取した試料のNORM調査2016

    • Author(s)
      矢島千秋、田部裕章、神田玲子、岩岡和輝
    • Organizer
      日本保健物理学会第49回研究発表会
    • Place of Presentation
      弘前文化センター(弘前市)
    • Year and Date
      2016-06-30
    • Related Report
      2016 Research-status Report
  • [Presentation] 放医研・自然起源放射性物質(NORM)データベースのデータ更新2016

    • Author(s)
      矢島千秋、田部裕章、岩岡和輝、神田玲子、下村岳夫、黒田典子
    • Organizer
      日本保健物理学会第49回研究発表会
    • Place of Presentation
      弘前文化センター(弘前市)
    • Year and Date
      2016-06-30
    • Related Report
      2016 Research-status Report
  • [Presentation] Activity concentration of NORM in geothermal power plant in the Philippines2016

    • Author(s)
      T. Y. Garcia、L.J.H. Palad、F.M. Dela Cruz、C.O. Mendoza、R.R. Encabo、J.U. Olivares、E.B. Enriquez(PNRI)、K. Iwaoka
    • Organizer
      日本保健物理学会第49回研究発表会
    • Place of Presentation
      弘前文化センター(弘前市)
    • Year and Date
      2016-06-30
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2022-02-22  

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