Exposure Assessment in Contaminated Belarus Forests. T. Sullivan, Brookheaven National Laboratory, Upton, NY; K. Anderson, Risoe National Laboratory, Roskilde, Danmark; and A. Z. Grebenkov and V. V. Rymkevich, Institute of Power Engineering Problems, Sosny, Minsk
In the Belarus regions affected by Chernobyl NPP accident the highest radiological doses are observed in the populations whose interactions with forests are maximal. It is also an established fact that the occupational doses for forestry personnel working in contaminated forests are above average in that areas. To take necessary protective measures and to arrange financial support for the "populations in risk" correct exposure assessment is required. The situation is worsen by the fact that contamination in the forests is extremely uneven and personal behavior on such a big territory is hard to determinate. In the work the following pathways of exposure has been taken into account: external irradiation, inhalation, consumption of forest fruits and mushrooms, forest fires, use of fire wood, and some others The work has been conducted in frame of feasibility study for the forest remediation project and risks have been calculated as for maximally exposed individual so for the collective doses. The results show that in extreme situations maximally exposed person could receive doses much higher than ICRP recommended and total collective dose is higher enough for planning remediation actions to be both economically and radiologically feasible.
Work has been partially supported by IPP program of DOE, USA and Dannish EPA.
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