Solid waste treated by the Centraco incineration unit arises from production and maintenance activities carried out by nuclear power plants, research centres and hospitals. Examples of combustible solid waste treated at Centraco include: wood, solid sludge, miscellaneous operational waste such as cardboard, paper plastic (including polyethylene (PE), polyvinyl chloride (PVC, limited to 5 10 %)) ,work clothing, overshoes, small quantities of organic products (grease, etc .), putrescible waste, etc.