Section 55(2) in The Dock Workers (Safety, Health And Welfare) Regulations, 1990
(2)Any magnetic lifting device used in connection with dock work shall be provided with an alternative supply of power, such as batteries, that come into operation immediately in the event of failure of the main power supply:Provided that the provisions under this sub-regulation shall not apply to magnetic lifting device that is being used to load or unload scrap metal or to other cargo handling operations of such a nature that there is no dock worker within the swinging zone of the load.
