This International Standard specifies safety requirements and preventive measures, and the means for their verification, for all types and sizes of mobile elevating work platforms (MEWPs) intended for moving persons to working positions. It gives the structural design calculations and stability criteria, construction, safety examinations and security tests to be applied before a MEWP is first put into service, identifies the hazards arising from the use of MEWPs and describes methods for the elimination or reduction of those hazards. This International Standard is not applicable to a) permanently installed personnel-lifting appliances serving defined levels, b) fire-fighting and fire rescue appliances, c) unguided work cages suspended from lifting appliances, d) elevating operator position on rail-dependent storage and retrieval equipment, e) tail lifts, f) mast-climbing work platforms (see ISO 16369), g) fairground equipment, h) lifting tables with a lifting height of less than 2 m, i) builder's hoists for persons and materials, j) aircraft ground-support equipment, k) digger derricks, l) elevating operator positions on industrial trucks, m) under-bridge inspection and maintenance devices, n) certain requirements for insulating aerial devices on a chassis for use in live work on electrical installations. It does not cover hazards arising from — use in potentially explosive atmospheres, — use of compressed gases for load-bearing components, — work on live electrical systems. NOTE 1 Hazards arising from work on live electrical systems are addressed in IEC 61057. MEWPs equipped with certain non-conductive (insulating) components can provide some protection from hazards associated with inadvertent contact with such systems (see ISO 16653-2). NOTE 2 For MEWPs that employ aerial devices used for live working, this International Standard will need to be used in conjunction with IEC 61057, taking into consideration the potential exceptions from this International Standard that are specified in IEC 61057.