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1.1 This standard specifies the special safety requirements for Mast Climbing Work Platforms (MCWP) which are temporarily installed and are manually or power operated and which are designed to be used by one or more persons from which to carry out work. The vertical moving components (work platform) are also used to move those same persons and their equipment and materials to and from a single boarding point. These restrictions differentiate MCWPs from Builder's hoists. The standard can also be used for permanently installed MCWP. 1.2 This standard is applicable to work platforms elevated by rack and pinion and guided by and moving along their supporting masts, where the masts may or may not require lateral restraint from separate supporting structures. 1.3 This standard is applicable to any combination of the following alternatives: - One or more masts; - Mast tied or untied; - Mast of fixed or variable length; - Masts vertical or inclined between 0° and 30° to the vertical; - Masts which are standing or hanging; - Movable or static base (chassis, or base frame); - Manually or power operated elevation; - Towed or self powered ground travel on site, excluding road traffic regulation requirements; - Driven using electric, pneumatic or hydraulic motors. 1.4 This standard identifies the hazards arising during the various phases in the life of such equipment and describes methods for the elimination or reduction of these hazards and for the use of safe working practices. 1.5 This standard does not specify the requirements for dealing with the hazards involved in the manoeuvring, erection or dismantling, fixing or removing of any materials or equipment which are not part of the Mast Climbing Work Platform (MCWP). Neither does it deal with the handling of specific hazardous materials.