ABSTRACT
This chapter attempts to evaluate the existing dosimetric and risk projection models which have been devised by radiation protection authorities in various countries and to comment on their biological integrity. There are three primary models utilized to determine the alpha dose delivered by the short-lived daughters of radon. The models are: International Commission on Radiological Protection Model, Jacobi-Eisfeld (V) model, and James-Birchal (JB) model. Several characteristic atmospheres were treated with the JL and JB models to evaluate the dose for 4 types of mining situations - low ventilation, medium ventilation, high ventilation and open pit. There are risk projection models that may be used to predict lifetime risk of lung cancer following an exposure to radon daughters. The model follows the pattern of appearance of lung cancer with appearance only after age 40, a minimum latent interval of 5 years before potential tumor appearance and an exponential loss of effect with a 20 year half-life from the year of exposure.
