A complete investigation of the radiation doses received by individuals exposed to radiation in the Yugoslav accident on 15 October, 1958, has been completed, using modern techniques of dosimetry. The zero power reactor was operated at low power levels to determine the ratio of gamma-ray to neutron dose at various locations near the reactor. These measurements were made with special counting methods, one of which measured the neutron dose in the presence of gamma-rays, and the other measured the gamma-dose in the-presence of neutrons. The reactor was operated at a higher power level for a short time to determine (a) the neutron dose by means of threshold detectors and (b) the relationship between neutron dose and Na24 activation in man-shaped phantoms. A computational program gave theoretical results for the same three quantities, i.e. the neutron spectrum, the gamma-neutron ratio, and Na24 activation. The results of theory and experiment are in good agreement. Final results for the individual doses are shown in Table 7. In this table the charged particle dose refers to the first collision dose due to recoils from fast neutrons and includes the dose delivered by the nitrogen n p reaction. The second dose column gives the maximum dose obtained for the hydrogen capture gamma-radiation produced in the phantoms. The external gamma dose based on the measured gamma-neutron ratio is shown in the third column, and the total doses are given in the last column. Of the seven persons investigated, the highest dose received (individual V) was 436 rads and the lowest dose was 207 rads. The doses previously estimated were reported in rem units, showing for individual V an estimated value of 210 rems for the neutron dose and 630 rems for the gamma-dose, or a total exposure of 840 rems.
No takes yet. Share an insight, caveat, or question.
Hurst et al. (1961) studied this question.