Deposition of airborne particles from fractured spent fuel or high-level waste

This paper discusses the preliminary equations developed to predict the amount of deposition of airborne particles that may result from an accidental release in a hot cell. The fraction of these airborne particles that may be released to the atmosphere is also calculated without taking credit for the filtration effect of the hot cell filters. Other equations and models are developed to determine the depletion of airborne particles from the airstream due to dry deposition outside the building. The results indicate that for postulated accidents involving severe mechanical impacts of spent fuel assemblies and high-level waste canisters, depositions may significantly reduce the offsite doses