In care of existence of possible radioactive contamination from nuclear enterprises and equipment it is usual to develop and apply special protective measures, countermeasures to protect workers, population and the envi-ronment from radionuclides impact. Analysis and assessment of radioecological countermeasures based on the radiocapacity theory have been realized in this article. The principles and methods of remediation proposed in the article can be used for different types of ecosystems and for different pollutants.