Estimation of Thyroid Dose from the Miniature Neutron Source Reactor

Abstract

 A computer code programmed in Pascal fora simple and fundamental calculation model has been developed and used for the estimation of radiological dose to the thyroid arising from a hypothetical failure of the whole core'. The code was validated using the International Atomic Energy Agency (IAEA) Generic I OMW Reactor. Results obtained are comparable to those obtained by other workers. Calculations based on non-site-specific data for Miniature Neutron Source Reactor (MNSR) gave very conservative results. The calculated dose to the thyroid (the limiting dose) of a receptacle (person) at 500m, 1000in and 5000m from the nuclear reactor were found to be very low, suggesting that the MNSR is safe even in the event of total core meltdown.