Search - Number 4 - ABOUT THE POSSIBILITY OF FORECASTING OF THE LEVEL OF AEROSOLS ACTIVITY IN VENTILATING SYSTEM OF "UKRITTYA" OBJECT

ABOUT THE POSSIBILITY OF FORECASTING OF THE LEVEL OF AEROSOLS ACTIVITY IN VENTILATING SYSTEM OF "UKRITTYA" OBJECT
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Category: Number 4
Publication: 4
Summary

On the basis of results of the long term observation by the Hurst's rescaled range analysis (R/S), the origin and an opportunity of the forecast of a concentration level of radioactive aerosols in a ventilating system of "Ukryttya" object is discussed. The data on concentration 137Cs, 241Am and -radiating nuclides and daughter products of decay of radon and thoron for the period about three years are analysed. It was shown, that fluctuations of aerosols concentration of daughter products of disintegration of radon and thoron are well enough described by Hurst's law (Н ~ 0,5) while time changes of the others nuclides do not follow this law, that can specify to displaing of influence of processes of technical activity (building and other works). Distinctions are connected to that daughter products of disintegration of radon and thoron are emanated from concrete of building designs, while 137Cs, 241Am, and -radiating nuclides are connected with fine dispersive particles of fuel, which rise in an air at external influences.