RESULTS OF THE SECOND CEC INTERCOMPARISON OF ACTIVE AND PASSIVE DOSEMETERS FOR THE MEASUREMENT OF RADON AND RADON DECAY PRODUCTS
In 1982 the Commission of the European Communities (CEC) sponsored an international intercomparison of passive and active techniques of measuring the concentrations of radon and its decay products. The exercise was repeated in 1984, when 17 laboratories participated in the intercomparison of passive dosimeters and 13 in the intercomparison of active measurement techniques. Most of the exposures were carried out in a 43 m**3 environmental chamber at NRPB Chilton. The intercomparison was carried out as part of a wider international programme sponsored jointly by the CEC and the Nuclear Energy Agency of the Organization for Economic Cooperation and Development. The intercomparison of active measurement techniques was carried out over three days, different exposure conditions being provided on each day. The results for radon decay product measurements showed a significant improvement on those in the 1982 intercomparison. In the 1982 exercise there was an overall spread of 57% about the mean and a standard deviation of 15% when radon was in equilibrium with its decay products. Under similar conditions in the second intercomparison, the overall spread was 29% and the standard deviation 10%. The results of the passive dosimeters showed that those who participated in both the 1982 and 1984 intercomparisons maintained a similar standard in both. Some newcomers to the intercomparison in 1984 had dosimeters which performed well, but some were troubled by high background track densities which made measurement of low exposures difficult.
Bibliographic Reference: EUR 10403 EN (1986) FS, 60 P., BFR 250, EUROFFICE, LUXEMBOURG, POB 1003
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Record Number: 1989124126700 / Last updated on: 1987-01-01
Available languages: en