Safety goals for a fusion reactor

The author proposes a new concept of fusion safety goals (SGs), which extends a framework of the International Nuclear Event Scales (INES), and incorporates medium risk characteristics of fusion power plants. Quantitative health objectives (QHOs) after a release of radioactive tritium and activated tokamak dust are incorporated with master risk curves. It is shown that one of the most favorable safety advantage of a fusion reactor is in its benign hazard characteristics, in which land contamination, equivalent to that experienced in the Chernobyl accident, can be physically excluded. No evacuation of the public is envisaged, although it is prudent to be prepared for potential agriculture restriction.