  A model to determine the dose rate of a planar alpha-emitting surface, has
been developed. The approach presented is a computationally efficient
mathematical model using stopping range data from the Stopping Ranges of Ions
in Matter (SRIM) software. The alpha dose rates as a function of distance from
irradiated UO2 spent fuel surfaces were produced for bench-marking with
previous modelling attempts. This method is able to replicate a Monte Carlo
(MCNPX) study of an irradiated UO2 fuel surface within 0.6 % of the resulting
total dose rate and displays a similar dose profile.
