Section 55(1) in The West Bengal Factories Rules, 1958
(1)No lifting machine and no chain, rope or lifting tackles, except a fibre rope sling, shall be taken in use in any factory for the first time in that factory unless it has been tested and all parts have been thoroughly examined by a competent person and a certificate of such a test and examination specifying the safe working load or loads and signed by the person making the test and the examination, has been obtained and is kept available for inspection.
