Code of Practice for Safe Use and Operation of Suspended Working ...

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5.14.7 All electrical equipment and wiring should be protected against overloads,short circuits and earth faults. Enclosure for electrical equipment whichare exposed to open air should be protected from ingress of water orsolid foreign objects by having an IP (Ingress Protection) rating of notless than 54 according to BS EN 60529:1992. All terminals should beprotected from corrosion.5.14.8 The power supply for the suspended working platform should be providedwith appropriate overload short circuit and earth-fault electrical protection.Power supply cables passing over parapets, edges of roofs or over thecorners of beams or slabs should be protected from abrasion or othermechanical damage.5.14.9 Any plug and socket should be so placed that they would not be damagedby the intended movement of the working platform or by the accidentalswinging of the working platform against the building.5.14.10 All control units and pendant controls should be so marked and identifiedthat there is no confusion between the various controls. Their purposeand the direction of travel resulting from their operation should be clearlyidentified.5.14.11 Pendant controls should be so placed or fixed that they cannot bedamaged by the intended movement of the working platform or by theaccidental swinging of the working platform against the building. Thecontrol button or levers should be robust and require continuous lightpressure to maintain powered movements, and the control units shouldbe so designed as to prevent them from being operated accidentally, e.g.by the provision of shrouds.5.14.12 If 3-phase induction motors are employed as power drives of thesuspended working platform, protection devices should be provided toprotect against single phasing and wrong phase sequence.5.14.13 Cable reels or other suitable device should be used for the proper handlingof the cables connected from the fixed building to the working platform. Itis to minimize the risk of physical damage to the cables due to stress andstrain. It also helps to eliminate the risk of trip and trap to the operators.37
6. SAFE AND PROPER USE6.1 Erection, Dismantling and Alteration6.1.1 The erection and dismantling of any part of a suspended working platformshould only be carried out by or under the supervision of a competentperson in accordance with the manufacturer’s assembly manual(regulation 16 of the SWPR).6.1.2 The alteration of any construction from the original design of a suspendedworking platform should only be carried out by a competent person underthe advice of a professional engineer. The professional engineer shouldbe in either mechanical or marine discipline if the alteration involvesmechanical parts of the suspended working platform or in structuraldiscipline if the alteration involves roof anchorage or roof fixings. It is notrecommended to bolt working platforms of two or more temporarysuspended working platforms together to provide a longer working rangeexcept under the written permission and authorization of the manufacturer.Similarly, no alteration to the electrical or mechanical parts of thesuspended working platform should be allowed except under the writtenpermission of the manufacturer.6.1.3 The work of attaching the wire ropes to anchor points for a davit armsuspended working platform should be completed from roof level andbefore the davit is raised to its working position.6.1.4 The rotating davits of an davit arm suspended working platform shouldbe designed to allow the davits to be easily rotated. After the workingplatform is rotated to the facade of the building, the socket of the davitarm should be properly locked to prevent any lateral movement of theworking platform.6.1.5 The davits and working platform should be provided with wheels to allowrelocation of the suspended working platform with minimum physical effort.6.1.6 Where parapet clamps of a temporary suspended working platform areused, the structural strength of the parapet must be determined prior toany site-rigging taking place. In any case, the parapet clamps and theclamps for back-ties should not be anchored to any brick or masonrywork.38
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Page 9 and 10: Competent personA competent person,
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