Search - Number 26 - FRACTIONATION OF RADIONUCLIDES IN AEROSOLS LOCAL AREA OBJECT "UKRYTTYA" BY RESULTS RADIOCHEMICAL SEPARATION

FRACTIONATION OF RADIONUCLIDES IN AEROSOLS LOCAL AREA OBJECT "UKRYTTYA" BY RESULTS RADIOCHEMICAL SEPARATION
Cover not present FRACTIONATION OF RADIONUCLIDES IN AEROSOLS LOCAL AREA OBJECT
Category: Number 26
Publication: 26
Summary

The results of the determination in aerosols the local area ΣPu (238 + 239 + 240Pu), 241Am and 90Sr after radiochemical separation to assess the adequacy of the correlation approach in calculating the concentration Σα- and Σβ-LLN is presented. It is shown that at the concentration calculation of plutonium isotopes which included in Σα-LLN and the concentration 90Sr + 90Y - Σβ-LLN need to use their relationship to the activity of 241Am. The relative error of estimation of the plutonium content isotopes does not exceed 30 %, and the concentration of 90Sr + 90Y 50 % (P = 0.95). This proportionality factor used by them in the basic fuel ratio is calculated at the time of γ-spectrometric measurements.

Keywords: radiochemical separation, aerosols of local area, the concentration of Σα- and Σβ-LLN, correlation method, the base fuel composition of the 4th unit.

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