In the report results of the work spent Rospotrebnadzor on maintenance of radiation safety of the population in situations of the raised irradiation are presented. The characteristic of radiation sources, ranges of doses of an irradiation is given. The role of radiation-hygienic certification in the decision of a problem of maintenance of radiating well-being of the population is described.

The report contains information about measures undertaken by the Ministry of Civil Defense and Emergencies of the Russian Federation in the framework of implementation of the state policy in the field of radiation accidents remediation. Results of works realized in the framework of target programs on remediation of radiation accidents at Chernobyl NPP and Production Association MAYAK, and on problems caused by nuclear weapon tests at Seminalatinsk test site are presented.

Natural sources of ionizing radiation are the major contributors to population irradiation. Evaluation risk created by the natural sources of ionizing radiation has a priority in radiation safety. Normative documents do not reflect all essential aspects of measurement and data processing. Integrated detector is a common tool for the population risk evaluation in many countries. Introdaction of full time monitoring of radon concentration is an urgent task for the Centre of Hygiene and Epidmiologie.

Summarized radiation-epidemiological data on health effects of the accident at the Chernobyl NPP registered in the follow-up period 1986-2006 on the Russian population are reported. Two groups of population: Chernobyl Emergency accident workers and residents of the most contaminated with radionuclides territories are examined. Impact of radiation-associated risk of solid cancers and leukaemia in these groups is assessed. Prognostic estimates of health effects of the Chernobyl accident on the Russian population are offered in the article.

The article is dedicated to comparison of different approaches to population exposure limitation at the example of external exposure of population living on territories contaminated after the accident at Chernobyl NPP. On the basis of the earlier developed model of population external exposure from Chernobyl fallout, the following criteria already being used in Russia or recommended by International Commission on Radiological Protection were compared:
• Average dose in critical group of population;
• Average dose of 10% of the settlement population having highest individual doses compared to others;
• The Representative Person concept
The value of the relation of annual effective dose calculated according to these approaches to the average dose for all the population of the settlement is between 1.7 and 1.85.

The article contains the analysis of the results of radiation survey at more than 100 non-uranium mining enterprises fulfilled by the Institute over the last 20 years. The article considers radiation situation formation appropriateness, demonstrates the evaluation of effective exposure doses of mining enterprises personnel from natural irradiation sources in working conditions, the dose structure is given.

Particular characteristics of psychological status of 50 female radiologists were being analyzed using data from their subjective assessments of heath condition, material wellbeing and risk factors for health danger. The control group consisted of female medical personnel whose work isn't connected with ionizing radiation sources. It was shown that situational and common anxiety in the main group and the control group didn't differ. But at the same time situational and common anxieties of the radiologists reliably increase with age and experience. The common anxiety is as higher as lower they evaluate their health. In the control group there is no such valuable dependence. Anxiety level of medical personnel in both polled groups doesn't depend on such characteristics of its social status as material wellbeing, housing conditions, etc.
It is concluded that the classification and analyzing capacity (mental function) of radiologists decrease with age. However, this mental function increases with educational level.

The article shows the results of radiation hygienic survey of settlements located in the area of Eastern Urals radioactive trace generated after the accident at Production Association Mayak in 1957. It presents stochastic simulation of the internal exposure doses of the inhabitants of 4 settlements caused by local agricultural food products consumption. The article also offers the model for predictive evaluation of average annual effective exposure doses of the critical groups of Eastern-Urals radioactive trace zone population.

The use of the comparable indexes in the given technique of the processing of the statistics of the population doses from medical allows to conduct a comparative analysis of the population medical exposure for administrative territories of Russian Federation.

The purpose of work is to estimate the possible decreasing of the density of  137 Cs sediment in the soil influenced by the horizontal flowing basing on the analysis of on location observations on the density of  137 Cs sediment in the soil after the Chernobyl accident.