Passive radon detectors: results of the 2006 HPA intercomparison
This report (HPA-RPD-053) considers the results of the HPA intercomparison of passive radon detectors.
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Thirty-two laboratories submitted 38 sets of passive detectors for the 2006 intercomparison. 皇冠体育app exercise included three exposures to radon and its decay products at different equilibrium factors. After exposure, the detectors were returned to their originating laboratories for assessment.
Participants reported the estimated exposure for each detector before they were notified of the exposures given to the detectors. 皇冠体育app results obtained by participating laboratories were classified according to the spread of results from detectors exposed together and by the difference between the mean result of each group and the actual exposure given.
Forty-seven per cent of the laboratories achieved the highest classification for accuracy, while 27% were in the lowest category. 皇冠体育app proportion of laboratories achieving very good results was broadly in line with that seen in recent intercomparisons.