ISO 4309:2004 details guidelines for the care, installation, maintenance and examination of wire rope in service on a crane, and enumerates the discard criteria to be applied to promote the safe use of the crane.ISO 4309:2004 is applicable to the following types of crane, as defined in ISO 4306-1:cable and portal cable cranes;cantilever cranes (pillar jib, wall or walking);deck cranes;derrick and guy derrick cranes;derrick cranes with rigid bracing;floating cranes;mobile cranes;overhead travelling cranes;portal or semi-portal bridge cranes;portal or semi-portal cranes;railway cranes;ISO 4309:2004 is applicable to cranes used for hook, grabbing, magnet, ladle, excavator or stacking duties, whether operated manually, mechanically, electrically or hydraulically.ISO 4309:2004 is also applicable to hoists and hoist blocks which use wire rope.