Measurement assurance of gamma-ray spectrometry in the system of radioecological monitoring

Organization of measurement assurance provision for radiation monitoring of contaminated territories by remote investigation methods is considered. It is shown that measurement assurance provision may be organized on the basis of small size standard samples. Certification of test sites is proposed to be conducted by method of transferring unit size by radiometers, callibrated on source standard samples through method of differential effect. The study results were used by certification of test-sites for aerogamma-spectrometers intended for assurance of uniformity and accuracy of measurements by designing atlas of the European territory of the country, contaminated as a result of Chernobyl NPP accident.