This report provides estimates of potential doses and risks from exposure to Dounreay fuel
fragments. It concentrates on exposure to particles from the Materials Test Reactor (MTR)
because these are most abundant and because assessments based on the characteristics
of these particles are likely to be conservative when applied to particles from the Dounreay
Fast Reactor (DFR). It includes measurements on MTR and DFR particles of surface dose
rates, in vitro solubility in simulated gut fluids, and in vivo intestinal absorption. The main …

This paper summarises work undertaken for SEPA and UKAEA to provide estimates of
potential doses and risks from exposure to fragments of irradiated nuclear fuel that have
been found near to the Dounreay Nuclear Power Development Establishment. It
concentrates on exposure to the most commonly found particles which originate from the
Materials Test Reactor (MTR). Assessments based on the characteristics of these particles
are likely to be conservative when applied to other particle types. Doses and risks from skin …