3. The premises or part of the premises used to process specified risk material must have a clean and an unclean section specified by the occupier, adequately separated. The unclean section must have a covered place to receive and store the specified risk material for processing and must be constructed in such a way that it is easy to clean and disinfect. Floors must be laid in such a way as to facilitate the draining of liquids. The premises must have adequate lavatories, changing rooms and washbasins for staff.E+W