Proposes requirements for cranes subject to arduous working conditions. It includes sections on performance, structure, mechanisms, electrical equipment, controls, conductors, collector systems, cabs, inspection and commissioning tests. The appendices cover arduous working criteria, and carriage fastening, enquiry and order information to be supplied by manufacturer and manufacturing tolerances. The draft Standard may be designated in part or parts for cranes with only a limited range of components subjected to arduous duty.