Radioactivity in the Risø District July-December 2008

Sven Poul Nielsen, Jytte Lene Clausen, Arne Miller

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    Abstract

    The environmental surveillance of the Risø environment was continued in July - December 2008. The mean concentrations in air were: 0.27±0.15 μBq m–3 of 137Cs, 2.8±0.83 mBq m–3 of 7Be and 0.18±0.13 mBq m–3 of 210Pb (±1 S.D.; N = 26). The depositions by precipitation at Risø in the second half of 2008 were: 0.046 Bq m–2 of 137Cs, 456 Bq m–2 of 7Be, 28.8 Bq m–2 of 210Pb and <1.0 kBq m–2 of 3H. The average background dose rate (TLD) at Risø (Zone I) was 69 nSv h–1 compared with 56±6.2 nSv h–1 (±1 S.D.; N = 4) in the four zones around Risø.
    Original languageEnglish
    Place of PublicationRoskilde
    PublisherDanmarks Tekniske Universitet, Risø Nationallaboratoriet for Bæredygtig Energi
    Number of pages24
    ISBN (Print)978-87-550-3728-1
    Publication statusPublished - 2009
    SeriesDenmark. Forskningscenter Risoe. Risoe-R
    Number1675(EN)
    ISSN0106-2840

    Keywords

    • Radioecology and tracer studies
    • Nuclear technologies
    • Risø-R-1675
    • Risø-R-1675(EN)

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