A pilot investigation of natural radiation in Danish houses

A. Sørensen, Lars Bøtter-Jensen, Benny Majborn, Sven Poul Nielsen

    Research output: Book/ReportReport

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    As a prelude to a nationwide survey a pilot study was carried out to establish techniques and procedures for the measurement of indoor radiation in Denmark. A passive cup dosemeter was designed containing CR39 track detectors and TLD's to measure radon and external radiation, respectively. The adequate performance of the dosemeter was verified in a radon intercalibration in 1984 carried out at the National Radiological Protection Board, UK. A total of 82 dwellings were selected covering most regions of the country. The dwellings were monitored in two threemonth periods, one in winter and the other in summer. The average dose rate in air from external radiation was 0.09 μGy h-1. In the winter the average radon concentrations were 88 Bq m-3 and 24 Bq m-3 for single-family houses and flats, respectively; and in the summer the corresponding values were 52 Bq m-3 and 19 Bq m-3. The study was partly financed by the Commission of the European Communities (contract No. BlO-F-555-DK(AD), 1983/84)
    Original languageEnglish
    Place of PublicationRoskilde
    PublisherRisø National Laboratory
    Number of pages38
    ISBN (Print)87-550-1117-9
    Publication statusPublished - 1985


    • Risø-M-2483
    • Apartment buildings
    • Calibration
    • Daughter products
    • Denmark
    • Dose equivalents
    • Dose rates
    • Dosemeters
    • Etching
    • Experimental data
    • Gamma radiation
    • Houses
    • Natural radioactivity
    • Particle tracks
    • Radiation detectors
    • Radiation monitoring
    • Radon
    • Seasonal variations
    • Thermoluminescent dosimetry


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