Experimental and Analytical Radiation Dosimetry near a Large BWR

The stringent limits proposed for off-site population exposure to radiation of facilities origin allow little conservatism in the methodology of dose assessment. Experiments in the environs of a large boiling water reactor (BWR) are being made to determine ion chamber and TLD techniques for measuring annual gamma radiation exposures of 0.1 to 10 mR from the gaseous effluent and to evaluate the accuracy of the dose predictions of several analytical models of radionuclide and photon transport. The development of accurate experimental techniques for low-level dose assessment should also be important for facilities where airborne releases occur intermittently ("puffs") or where the source is poorly defined ("seepage").