Aim of project

The aim of project is to predict radon risk from bedrock as a tool for setting the priority of distribution of track-etch detectors for indoor radon measurements. The prediction is based on the results of soil gas radon measurements from the radon database. The prevailing radon risk in particular rock units is expressed in the form of radon risk maps of various scale.

Short history – main research topics

• 1990
  • Radon risk classification for building site assessment published
  • Interministerial Radon Commission established
  • Radon risk maps 1 : 200 000 published for the whole state area
• 1991
  • Decree of Ministry of Health No. 76 „ On the lowering of radiation from radon and other  natural radionuclides“ issued
• 1992
  • study of tectonic influence on radon concentration
  • study of climatic variation of radon in soils
  • permeability influence on radon concentration
  • soil gas radon database established
• 1993
  • Association Radon Risk, joining private radon companies established
  • seasonal radon variations
  • depth relationship of radon concentration
  • reference test sites established
  • study of radon in the black shales
  • Decree of Government No. 709 on the „ Protection of Public from the Radiation caused by Radon and other Natural Radionuclides“ issued
• 1996
  • comparison of regional and local geology to indoor radon
  • study of  influence of depth of sampling on the building site assessment
  • choice of new reference test sites in Central Bohemia
  • factors influencing the radon entry into houses
  • radon variations and Earth tidal deformations
• 1997
  • Decree of the State Bureau of Nuclear Safety No. 184 on the „ Demands on the radiation  protection“ published
• 1998
  • vectorization of geological and radiometric map 1 : 500 000
  • study of inconsistence between geological prediction and indoor radon results
    influence of tectonics on radon concentration
• 1999
  • radon risk map 1 : 500 000 published on the CD-ROM
  • 16 detailed radon risk maps 1 : 50 000 published
  • nouvellization of  building site assessment published
  • Governmental Decission No.538 on the „Radon Programme of the Czech Republic“
• 2005
  • The territory of the Czech Republic was covered by 214 maps of radon risk from bedrock