AbstractThe introduction outlines the Safety and Environment (S+E) part of the European Fusion Technology Programme and its relation to the NET device. The safety of NET proper is presented in terms of energy and radioactivity inventories, accident analyses, dispersion of radioactivity in the environment, radioactive wastes, and implications of component handling.The European S+E Programme is reflected by the expansion on these topics, as to a large extent, the basic information and quantitative results used have emerged from the collaboration between the European laboratories and NET under this programme. Where appropriate results acquired by the worldwide fusion community have been included to widen the understanding of the S+E aspects to be observed in the design of next generation fusion devices with burning DT plasmas.