[en] Dismantling nuclear facilities induces the most acute problem of low and very low activity waste management; regulatory, technical and radiological aspects are examined: declared activity thresholds have to be distinguished from the acceptance thresholds in processing, recycling or disposal facilities; waste producers must know precisely the acceptance conditions. Control and industrial measurement methods at very low level are necessary in order to ensure quality and security in waste radioactivity grading. Specific facilities are imposed by the large quantities of wastes produced