Application of collimated detector emergency response in engine room of power unit 4 of NPP prior to uranium sorption from pulps

Methods providing for remote measurement of surface density distribution of ionizing radiation source activity, for plotting maps of radiation activity surface distribution, for calculating exposure dose maps or exposure doses at any prescribed point, for evaluating the contribution of various sources to exposure doses, for forcasting variations in dependence on planned or accidental activity change at any place of the closed building are considered. The advantage of the methods consists in that all calculations, various version modeling, choice of optimal ways are carried out without personnel irradiation. The methodology mentioned above was aplied in the course of elimination of accident consequences at the Chernobyl NPP