Medical Radiology and Radiation Safety. 2015. Vol. 60. No. 2. P. 15-21

RADIATION SAFETY

N.K. Shandala¹, I.P. Korenkov¹, V.V. Romanov²

Radiation Situation at the NPP Area

1. A.I. Burnasyan Federal Medical Biophysical Center of FMBA, Moscow, Russia, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. ; 2. Federal Medical Biological Agency, Moscow, Russia

ABSTRACT

Purpose: Radiation survey around NPPs and establishing “zero” background for the environment.

Material and methods: In the course of radiation hygienic monitoring, the special regulation has been developed. This regulation includes: selection of media for surveillance (air, soil, and foodstuffs), identification of sampling areas and frequency. In 48 settlements around NPPs, more than 600 samples for study have been collected. These samples were studied using gamma spectrometry, radiometry and radiochemistry methods.

Results: Radiation and health physics situation in the areas surrounding NPPs remains satisfactory:

- gamma dose rate is within the natural background variation range (0.08-0.15 μSv/h);

- specific activity of ⁹⁰Sr and ¹³⁷Cs in water of open reservoirs does not exceed 0.04 and 0.01 Bq/l, respectively;

- concentration of ⁹⁰Sr and ¹³⁷Cs in local foodstuffs is 100 - 1000 times lower than the permissible levels;

- concentrations of ⁹⁰Sr and ¹³⁷Cs in foodstuffs within the NPPs supervision areas are the same as those in the similar foodstuffs of other regions;

- the highest annual individual effective internal doses do not exceed 10 μSv /year.

Conclusions: Long-term experience in the operating NPP (Novovoronezh and Kalinin) shows that in case of route operation, radioactive contamination is low in comparison with natural background and there is no significant effect on the radiation dose to population and environment.

Key words: surveillance area, environmental media, local foodstuffs, population, effective dose

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For citation: Shandala ТK, Korenkov IP, Romanov VV. Radiation Situation at the NPP Area. Medical Radiology and Radiation Safety. 2015;60(2):15-21. Russian.

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