Recent accomplishments and future directions in the US fusion safety and environmental programs

The US fusion program has long recognized that the safety and environmental (S and E) potential of fusion can be attained by prudent materials selection, judicious design choices, and integration of safety requirements into the design of the facility. To achieve this goal, S and E research is focused on understanding the behavior of the largest sources of radioactive and hazardous materials in a fusion facility, understanding how energy sources in a fusion facility could mobilize those materials, developing integrated state of the art S and E computer codes and risk tools for safety assessment, and evaluating S and E issues associated with current fusion designs. In this paper, recent accomplishments are reviewed and future directions outlined. (author)