On-Site Test of Filters in Nuclear Facilities using Radioactive Sodium Chloride (24Na)-Aerosol and Methyl Iodine (131I)

N. Z. Heidam, K. A. Hansen, J. Fenger, H. Flyger, Per Hedemann Jensen, P. Jensen

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    Abstract

    The nuclear facilities at Risø National Laboratory are equipped with high-efficiency filters to protect the environment from routine or accidental releases of radioactive material. The filter efficiency must be tested regularly and a method for on-site control is described. It is based on injection of a radioactive sample in the filter duct, followed by sampling before and after the filter. HEPA-filters are tested with a 24NaCl-aerosol and charcoal filters with 131ICH3. Normally samples of 1 mCi are
    used. Penetrations (1 - efficiency) can be determined with a relative uncertainty of 10-15%.
    Original languageEnglish
    Place of PublicationRoskilde
    PublisherRisø National Laboratory
    Number of pages43
    ISBN (Print)87-550-1184-5
    Publication statusPublished - 1986
    SeriesDenmark. Forskningscenter Risoe. Risoe-R
    Number532
    ISSN0106-2840

    Keywords

    • Risø-R-532
    • Risø-R-532(EN)

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