In NW England, certain types of bedrock of Carboniferous age have been found to have a relatively high radon potential, in particular limestones and some mudrocks.
These result in frequencies of domestic indoor radon gas concentrations above the Action Level (200 Bq.m-3) of 5% and 3% for the Dinantian and Namurian subdivisions of the Carboniferous, respectively.
More particularly, villages built on such bedrocks can have frequencies of homes of 10-15% above the Action Level.
Surveys based on the geological radon potential can effectively locate small areas with incidences of high indoor radon levels which qualify them for consideration as Affected Areas (> 1% frequency).
Mots-clés Pascal : Fréquence apparition, Concentration, Radon, Produit radioactif, Dose forte, Carbonifère, Angleterre, Grande Bretagne, Royaume Uni, Europe, Population, Descendance, Irradiation(personne), Radiocontamination, Logement habitation, Gaz
Mots-clés Pascal anglais : Occurrence frequency, Concentration, Radon, Radioactive product, High dose, Carboniferous, England, Great britain, United Kingdom, Europe, Population, Progeny, Radiation exposure(person), Radioactive contamination, Housing, Gases
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 93-0419154
Code Inist : 002B30A03A. Création : 199406.