Аннотация:A various methods for investigating the impact of radioactive releases from nuclear electrical installations to the health of human and also to environment are considered in our article. To understand the relevance a work, the article provides examples with the consequences of such influences. It has been proven that irreversible processes can occur at high doses of radiation or prolonged exposure. One of these processes is the emergence of mutational species, both among animals and plants. If these changes are not promptly eliminated, they are likely to have a negative impact on other areas of the environment. A new methodology has been developed for assessing the impact of emissions with radioactive contamination on the environment, taking into account time intervals. It has been established that when determining the damage to the environment caused by radioactive emissions from nuclear power, there must be a financial component. Methods for determining financial damage from radioactive emissions from nuclear power based on environmental analysis are developed. These methods take into account the negative impact of radioactive impact on the environment (water, soil, plants, etc.). Particular attention is paid to rare species of plants and animals. As well as living organisms most sensitive to radiation.