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Main results of the international intercomparison of passive radon detectors under field conditions in Marie Curie’s tunnel in Lurisia (Italy)

Cardellini F., Chiaberto E., Garlati L., Giuffrida D., Leonardi F., Magnoni M., Minchillo G., Prandstatter A., Serena E., Trevisi R., Tripodi R., Veschetti M.

Nukleonika

2016

Vol. 61, No. 3

251--256

In recent years a large number of radon intercomparison exercises has been organized; most of them took place in radon chambers, in reference atmosphere of the parameter to control (i.e. radon gas) under temperature, humidity and atmospheric pressure stable conditions. In 2014, in the tunnel belonging to the Lurisia spas complex (Lurisia, Piedmont, Italy), with natural high concentrations of uranium and radon gas, an intercomparison exercise has been held to give to radon measurement services and laboratories the possibility to test their passive systems under field conditions, which are less controlled and much more challenging. The response of laboratories was very positive: 46 participants from 10 European countries and 3 non-European countries. Generally about 80% of results of participants were considered acceptable even if it was observed a global trend of a substantial underestimation of the actual radon concentration.