Orphan source detection at REFOX with a 16-litre Nal car-mounted gamma ray spectrometer
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Sammendrag
The Geological Survey of Norway (NGU )has been involved in measurements of anthropogenic radiation from the time of the Chernobyl accident of 1986, and since then has cooperated with the Norwegian Radiation Protection Authority (Statens strålevern) and Norway's nuclear preparedness organisation to provide mobile gamma ray measurement platforms for use in nuclear emergencies (Rønning 2008). NGU operates a mobile radiometric system which can be mounted on fixed-wing aircraft, helicopter, or car platforms, according to the needs of the particular emergency scenario.In autumn 2012 NGU participated in REFOX - an emergency exercise organised by Swedish authorities - with a 16-litre NaI car-mounted gamma ray spectrometer. This report summarises the experiences of the NGU team in locating and identifying a range of anthropogenic orphan sources.