Origin of effluents Nuclear medicine departments and laboratory preparation stations, brachytherapy, laboratories, and other industrial liquid waste contaminated with radionuclides. French legislation: Arrêté du 23 juillet 2008 Guide de l'ASN - déchets contaminés par des radionucléides Theses effluents must be clearly separated from other waste water and brought to the technical room with a specific evacuation network. MEDICAL PROCESS plant permits to store, secure and control the effluent according to the regulations during the period of the radioactivity decrease.