The safety implications of tokamak dust size and surface area

Tokamak dust, accumulated primarily from sputtering and disruptions, has important safety issues associated with it. The dust may contain tritium, it may be activated, and may be chemically toxic, and chemically reactive. The size of the dust and the surface area are important parameters in determining potential hydrogen production and transport of activated/chemically toxic dust. In this paper we examine the effect of the size distribution of the dust on these safety issues.