Index > 3 Characterisation of radioactively contaminated sites >

3.6 Site characterisation: Non-intrusive methods

Non-intrusive survey techniques are used in the first instance to rapidly obtain information about the site, in order to focus intrusive methods of investigation and sampling. However, due to gained experiences and improvement of the non-intrusive survey techniques, they are sometimes now also applied for main radiological investigations. Methods commonly employed are:

  • Radiological surveys. Topics that are discussed are:
    • Design of non-intrusive radiological surveys;
    • Types of scannning surveys;
    • Types of direct measurements.
  • Geophysics. Topics that are discussed are:
    • The application of geophysical techniques;
    • Commonly applied geophysical techniques;
    • Selection of geophysical techniques;
    • Down-hole geophysics..
  • Drain surveys.