Verification Tests on Nondestructive Assay for <sup>238</sup>U Content in Uranium-contaminated Waste Drums Using Gamma Method

DOI Web Site Web Site 1 Citations 5 References
  • YOKOYAMA Kaoru
    Japan Atomic Energy Agency, Ningyo-toge Environmental Engineering Center
  • SUGITSUE Noritake
    Japan Atomic Energy Agency, Ningyo-toge Environmental Engineering Center
  • MUROI Masayuki
    Radioactive Waste Management and Nuclear Facility Decommissioning Technology Center
  • SUZUKI Yasuo
    Radioactive Waste Management and Nuclear Facility Decommissioning Technology Center

Bibliographic Information

Other Title
  • γ線計測による放射性廃棄物収納容器中のウラン238の定量の検証
  • γセン ケイソク ニ ヨル ホウシャセイ ハイキブツ シュウノウ ヨウキ チュウ ノ ウラン 238 ノ テイリョウ ノ ケンショウ

Search this article

Description

We have proposed a new theory on gamma assay for 238U determination of uranium-contaminated waste drums. According to this theory, regardless of the inhomogeneity of waste matrix density or uranium source distribution, we can accurately determine the amount of 238U contained in drums nondestructively using count rates of gamma rays of two energies(1001keV and 766keV) emitted from 238U progeny nuclide 234mPa. In this paper, we have verified the theory by tests under various waste conditions made by simulated waste drums. We have estimated the relative error to be less than 20%, and the detection limit to be 1.2Bq/g when the specific activity of uranium is 25000Bq/g, in these cases. We have confirmed that this new assay system is efficient for the rational classification of uranium wastes to be disposed of.

Journal

  • RADIOISOTOPES

    RADIOISOTOPES 62 (1), 1-17, 2013

    Japan Radioisotope Association

Citations (1)*help

See more

References(5)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top