BS ISO 21455:2020 pdf free.Mobile elevating work platforms一Operator’s controls一Actuation, displacement, location and method of operation.
BS ISO 21455 This document specifies the performance requirements, location, marking and method of operation related to operator’s controls on mobile elevating work platforms (hereafter referred to as MEWPs) and takes into account operator safety and ergonomics.It applies to all controls used by an operator and includes provisions for finger, thumb, hand, and foot operated controls. The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 16368, Mobile elevating work platforms – – Design, calculations, safety requirements and test methods ISO 20381, Mobile elevating work platforms一Symbols for operator controls and other displays ISO 7000, Graphical symbols for use on equipment一Registered symbols.The minimum strength of each control shall be sufficient to withstand at least five times its maximum actuation force without sustaining permanent damage [for example, deformation, fracture) or having its primary function impeded.In addition, hand-operated joysticks shall be capable of withstanding a minimum force of 350 N without
sustaining permanent damage (for example, deformation, fracture) or having its primary function impeded.NOTE This additional strength requirement does not apply to additional control mechanisms as described in 7.2.2.1.The operational characteristics in Table 4 shall be followed for a group of lever-operated controls that are stacked or banked and located at the work platform with the exception of slew or rotate extending structure controls. To slew or rotate extending structure to the right of the operator the direction of control movement shall be upward. To slew or rotate extending structure to the left of the operator the direction of control movement shall be downward. Where more than one control is used to move a single component of the extending structure, then the individual movement controls shall be grouped together and within this group ordered left to right or nearest to farthest: rotate, lift, telescope.
The platform level control shall be grouped separately from other extending structure controls.BS ISO 21455 pdf download.