8.8.2 Installation Pre-use Inspection/Thorough Examination

The degree of pre-use inspection or thorough examination required will to some degree depend on the type of trolley used and the installation conditions. Demountable trolleys are commonly used as a portable tool for temporary installation in order to suspend a hook suspension hoist to effect a limited lifting and moving operation, e.g. in maintenance applications. Demountable trolleys are designed and intended for the user to erect onto a suitable runway beam for use in such applications. It is therefore the users responsibility to ensure the adequacy and suitability of the beam. It will usually be sufficient for a suitably qualified and experienced person to inspect the installation prior to use to ensure the correct fitting and adjustment, etc. have been made. Other trolley types are designed and intended for more permanent installations, often requiring an amount of dismantling and reassembly, which may call for a higher degree of examination to be made by a Competent Person (See 8.7 LEGAL REQUIREMENTS)

Where the Competent Person deems a proof test is necessary as a part of his thorough examination, the test load applied will be governed by the requirements of the overall installation, e.g. runway, which form a part of the thorough examination and which may differ from those of the trolley. The proof load for trolleys will usually be 150% of the WLL. For trolleys combined with power operated lifting appliances, it is accepted that the proof load will be that of the specific appliance.