2015-4(17)

Nuclear, radiation and environmental safety

Article NameThe Analysis of the Rostov NPP Influence on 60CO Contents Dynamics in Upper Soil Stratum of Its Territory
AuthorsI.A. Bublikova
Address

Volgodonsk Engineering Technical Institute the branch of National Research Nuclear University «MEPhI»,
73/94 Lenin St., Volgodonsk, Rostov region, Russia 347360
e-mail: IABublikova@mephi.ru

AbstractBACKGROUND The potential increase of a radiation background connected with Rostov NPP operation cause big concern of inhabitants of the NPP region which is generally presented by agricultural grounds. One of technogenic radionuclides which can potentially break ecological wellbeing of the population, is 60CO. OBJECTIVES We investigated the influence of the Rostov NPP on 60CO contents dynamics in upper soil stratum of its territory that influences on population safety radiation level of the territory of its placement. It is necessary to solve the following problems: – to analyse 60CO Contents Dynamics in the Rostov NPP emissions; – to investigate interrelation of the considered radionuclide content in upper soil stratum of Rostov NPP territory and its emissions; – to make the analysis of 60CO contents dynamics in upper soil stratum. METHODS The Rostov NPP radiation situation reports 2002 - 2013 provided by NPP radiation safety department were used for research. MS Excel data tools of mathematical statistics and regression analysis were used for the analysis. CONCLUSIONS: 1) The Rostov NPP annual 60CO emission didn't exceed 1% of admissible values, and the maximum value of considered radionuclide emission in a month made less than 5% of the appropriate reference level during 2002 – 2013. 2) The assumption that there is a relation between the Rostov NPP gas-aerosol emissions and the 60CO contents in upper soil stratum of Rostov NPP territory isn't confirmed. 3) It is defined that the 60CO contents in upper soil stratum of the Rostov NPP trial platforms during 2006 - 2013 decreased exponentially. Thus for 4 of 7 trial platforms decrease of considered radionuclide activity are coordinated well according to the radioactive decay law. RESULTS In general, the cobalt-60 entering with the Rostov NPP emissions in the atmosphere doesn't collect in supervision zone upper soil stratum. Therefore, it doesn't influence on radiation safety both environmental objects and the population living in the NPP territory.
KeywordsRostov NPP, 60CO; upper soil stratum, supervision zone, regression analysis
LanguageRussian
References

[1]    Otchet «O radiacionnoj obstanovke v rajone raspolozheniya Rostovskoj AES za 2002–2013 gg» [The report "About a radiation situation in the Rostov NPP area" during 2002-2013.]. Volgodonsk. Pub. Filial OAO «Koncern Rosenergoatom» «Rostovskaya Atomnaya Stanciya» ["Rostov Nuclear Power plant" branch of JSC Rosenergoatom Concern], 2013. (in Russian)

[2]    Sanitarno-epidemiologicheskie pravila i normativy SanPin 2.6.1.24-03 "Sanitarnye  pravila proektirovaniya i ekspluatacii atomnyx stancij (SP  AS-03)" [Sanitary and epidemiologic rules and standards SanRaN 2.6.1.24-03 "Health regulations of nuclear power plants design and operation (SR AS-03)"]. Bez mesta, bez goda [Without place, without date]. 37 p. (in Russian)

[3]    Otchyot «Radiacionnaya obstanovka v okruzhayushhej srede regiona Rostovskoj AES v predpuskovoj period» («Nulevoj fon») [The report "A radiation situation in environment of the Rostov NPP region during the prestarting period" ("A zero ground")]. Volgodonsk – Rostov-na-Donu [Volgodonsk – Rostov-on-Don], 2000. 129 p. (in Russian)

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