TORE SUPRA is a large superconducting tokamak designed for sustaining long inductive pulses (t -30 s ) . In particular, all the first wall components have been designed for steady-state heat and particle exhaust , particle injection,and additional heating. In addition to these technological assets, a strict control of the plasma-wall interactions is required. This has been done at low power : experiments with ohmic heating have been mainly devoted to the pump limiter, ergodic divertor and pellet injection experiments. Some specific problems arising in large tokamaks are encountered ; the pump limiter and the ergodic divertor yield the expected effects on the plasma edge. The effects on the bulk are discussed.