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 typical parameters for sludge, furnace, ash, etc..