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Quantitative test for radioactivity of uranium filled in waste drums using Q$$^{2}$$ low level waste assay systems

Yokoyama, Kaoru; Hata, Haruhi   ; Ohara, Yoshiyuki; Sugitsue, Noritake

We have proposed a new theory on passive $$gamma$$ assay for $$^{238}$$U 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 $$^{238}$$U contained in drums nondestructively using count rates of rays of two energies (1001 keV and 766 keV) emitted from $$^{238}$$U progeny nuclide $$^{rm 234m}$$Pa. This technique is aimed final at introducing into the existing $$gamma$$ ray measuring device. In this paper, we have verified the theory using the existing $$gamma$$ ray measuring device by tests under various simulated waste drums conditions. We used the $$gamma$$-ray measurement system made from CANBERRA: Qualitative and Quantitative (Q$$^{2}$$) Low Level Waste Assay Systems. The application validity of this evaluation technique was shown.

Language

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Japanese

Journal

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Radioisotopes

Volume

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62

Number

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11

Pages

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p.833 - 840

Publication Year/Month

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2013/11

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Paper URL

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https://doi.org/10.3769/radioisotopes.62.833

DOI for research data

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Keywords

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no keyword

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

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