This CEN Report describes good practice for the incineration of sludges with and without grease and screenings.This CEN Report is applicable for sludges described in the scope of CEN/TC 308 specifically derived from :- night soil ;- urban wastewater collecting systems ;- urban wastewater treatment plants ;- treating industrial wastewater similar to urban wastewater (as defined in Directive 91/271/EC) ;but excluding hazardous sludges from industry.This European standard is not applicable to co-incineration of sludge and other wastes, (either urban or hazardous) (see CR 13768) and to the use of sludge in cement kilns.Annex A gives tables of data for different