This European Standard specifies safety requirements:-for tower cranes and-for climbing systems used with the tower cranes/masts of tower cranes for which they have been designed. They are classified as external or internal systems.This European Standard applies to tower cranes for construction work, which are either erected by parts or self erecting cranes.This European Standard is not applicable to mobile cranes, mobile harbour cranes, crawler cranes, slewing jib cranes, bridge and gantry cranes, offshore cranes, floating cranes, loader cranes, hand operated cranes or railway cranes.This European Standard deals with all significant hazards, hazardous situations and events relevant to tower cranes, when used as intended and under conditions foreseen by the manufacturer. This European Standard specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards (see Clause 4).The significant hazards covered by this European Standard are identified in Clause 4.This European Standard does not cover hazards related to:-the lifting of persons by the tower crane itself.The requirements related to Electromagnetic compatibility (EMC), the specific hazards due to external influence on electrical equipment, potentially explosive atmospheres and ionising radiation are not covered by this European Standard.This European Standard covers hazards related to the lifting of persons using a climbing system.This European Standard is not applicable to tower cranes !and climbing systems" which are manufactured before the date of publication by CEN of this European Standard.