Results of the third CEC intercomparison of active and passive detectors for the measurement of radon and radon decay products
The report presents the European regional results of the 1987 joint CEC/OECD exercise to compare radon and radon daughter measurement techniques. This is the third such intercomparison. It covers firstly passive integrating detectors and secondly active instruments. Exposure and measurement facilities are described and the experimental procedures set out in detail. The results are presented as tables. The mean reproducibility of sets of passive detectors varies from 5% to 83% with an overall mean of 18%. Taking the minimum detectable exposure to be twice the standard deviation on the background signal, these values range from 0.6 to 50 kBq.h/m3. The active measurement results for radon gas concentration, radon decay products and total aerosol present are compared for each participating laboratory with measurements made at NRPB. Conditions that might cause problems of measurement were identified, as for instance at low radon concentrations or where a high fraction of radon decay products is unattached. Standards of radon and decay product metrology are shown to have improved steadily.
Bibliographic Reference: EUR 11882 EN (1988)
ISBN: ISBN 92-825-9068-2;CD-NA-
Record Number: 198910046 / Last updated on: 1994-12-01
Original language: en
Available languages: en