The results of this research should provide a large part of the data required to move beyond the traditional index approach to external radiation exposures. Calculation of Dose and Prediction of Effects from Discrete Radioactive Particles Small radioactive particles with relatively high specific activities have been found at a number of power reactors. By whatever name, these particles have had a major effect on those utilities with recognized DRP contamination. Enforcement Policy for Hot Particle Exposure. Several key issues remain to be addressed before DRP exposure can be placed properly in the framework of overall radiation protection both for the radiation worker and for the general public.
Work is under way to publish new computer codes for assessing doses from exposures to hot particles.
Further experimental work using swine is planned. As NASA begins to consider human exploration missions to the Moon and Mars, current crew vehicle designs have almost exclusively considered propulsion via nuclear reactors. Research sponsored by NASA-Lewis Research Center has focused on assessing radiation doses to crew members both on and off these two vehicles. Radon Assay Methodology Several aspects of radon-222 measurement techniques are available for study. Computerized image analysis methods are being applied to the alpha track radon measurement method using both cellulose nitrate and polycarbonate track materials.