An employer shall ensure that -
(a) when two or more items of work equipment used for lifting non-guided loads are installed or erected on a site in such a way that their working radii overlap appropriate measures are taken to avoid collision between loads or the work equipment parts themselves, or both,
(b) when using mobile work equipment for lifting non-guided loads,
(i) measures are taken to prevent the equipment from tilting, overturning or, if necessary, moving or slipping, and
(ii) checks are made to ensure that the measures are executed properly,
(c) if the operator of work equipment designed for lifting non-guided loads cannot observe the full path of the load either directly or by means of auxiliary equipment providing the necessary information,
(i) a competent person is in communication with the operator to guide him or her, and
(ii) organisational measures are taken to prevent collisions of the load which could endanger employees,
(d) work is organised in such a way that, w
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