Safety analysis of the Compact Ignition Tokamak (CIT) release of activated solid material

Recent safety studies for the Compact Ignition Tokamak (CIT) have addressed the potential risk associated with the release of activated solid materials from sources such as the vacuum vessel and the TF (toroidal field) coils, including insulation, as a result of abnormal events associated with the machine. Several operating scenarios, both bounding and realistic, have been investigated to determine a spectrum of isotope concentrations which might be present in the materials. Source terms for the various release scenarios are established using this information. The various release modes are identified along with factors which could reduce the amounts of activated material actually released. From this information, the doses resulting from a spectrum of releases are presented and discussed. A number of factors, which are identified, lead to the conclusion that accidental release of activated solids does not present a significant public risk from the operations of the CIT