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

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5.12 Protection Against Weather5.12.1 All winches, climbers, or other lifting appliances or similar devices shouldbe adequately protected against the effect of weather, dust, or materiallikely to cause damage to them that could result in a malfunction(regulation 13 of the SWPR).5.12.2 The machinery of the roof trolley should be enclosed by weatherproofcovers. They should be so designed and constructed to enclose theequipment and moving parts as completely as possible. Lockablemaintenance access covers should be so fixed that they are not readilyremovable.5.12.3 The suspended working platform in its docked position should be designedto withstand the wind pressure as given in the Code of Practice on WindEffects Hong Kong 1983. All loose items of the suspended workingplatform are securable to fixed structure so that during the typhoonconditions, the items will not be disintegrated or damaged.5.13 Safe Means of Access5.13.1 Sufficient safe means of access and egress should be provided to :(a)(b)the working platform of the suspended working platform; andthose parts of the installation of the suspended working platformrequiring periodic inspection, maintenance or normal usage(regulation 9 of the SWPR).5.13.2 When access to the working platform is from the roof of the building, theaccess must be inside the parapet. If an access gate is necessary in theside frame of a working platform, it should not open outwards and shouldclose automatically (springloaded, for example). It should not be possibleto open the lock accidentally.5.13.3 When working platforms are adjacent, neither scaffold boards nor any otherform of decking should be used to provide access from one to the other.5.13.4 In the case of a davit arm suspended working platform, the design of thedavit should be such that the working platform can be raised above theparapet of the building to ensure safe access and egress and to ensurethe safety of persons rigging the davit system.35
5.13.5 The place where persons access to and egress from the working platformof a davit arm suspended working platform should be safe and they shouldnot be required to climb over the parapet of the building.5.14 Electrical Component5.14.1 All power and control cables of the suspended working platform shouldbe of the proper type and size. The power cable connecting the rooftrolley to the power supply point and the cable suspended from the rooftrolley or davit arm to the working platform should be suitably sheathedand protected wherever possible from damage of breaking, and shouldhave sufficient cable strength to avoid the cables from being damagedby its own weight. All other cables should be suitably protected againstmechanical damage by being enclosed in conduit and/or trunking or othersuitable means.5.14.2 Protection should be provided for all electrical parts, motors, cables etc.against accidental or environmental damage. All circuit panels should belocked when not in use.5.14.3 Provision should be made to ensure that in the event of the power failure,no damages can occur to the suspended working platform nor can therebe any uncontrolled movement.5.14.4 All electrical equipment should have adequate mechanical strength andshould be adequately protected against mechanical damages and wateringress under site condition. Cable terminations to the suspended workingplatform and electrical panels should also be the weatherproof type orhigher rating to avoid ingress of water and moisture.5.14.5 All exposed metal parts or extraneous conductive parts of the roof trolleyand of the working platform should be properly earthed in accordancewith BS 7671:1992 (IEE Regulations) and BS 7430:1991-Code of Practicefor earthing.5.14.6 The rail tracks, davit arm brackets and other exposed and extraneousmetal parts should be connected to the roof lightning protection conductor.All connections should be of negligible resistance, metal to metal andmechanically sound and with non-ferrous nuts, bolts and washers usingclamps where necessary.36
Page 1 and 2: Code of Practice forSafe Use and Op
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Page 9 and 10: Competent personA competent person,
Page 11 and 12: Registered professional engineerA r
Page 13 and 14: 3. DESCRIPTION3.1 This Code specifi
Page 15 and 16: 4. MANAGEMENT OF SAFE OPERATION OFT
Page 17 and 18: (e)(f)(g)(h)(i)(j)(k)the suspended
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Page 29 and 30: 5.4 Stability Against Overturning5.
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Page 35 and 36: 5.8.3 If the rope is to be wound on
Page 37: 5.10.4 The secondary brake should b
Page 41 and 42: 6. SAFE AND PROPER USE6.1 Erection,
Page 43: 6.3 Safety Belt and Lifeline6.3.1 E
Page 46 and 47: 6.5 Marking of Safe Working Load an
Page 48 and 49: 6.7.1.3 The working platforms shoul
Page 50 and 51: 7.2 Wire Ropes7.2.1 All ropes shoul
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Page 54 and 55: 8.2.13 Functional tests of the foll
Page 56 and 57: 8.4 Display and Keeping of Certific
Page 58 and 59: (c)(d)(e)(f)(g)in case of a tempora
Page 60 and 61: 14. Guidance note on classification
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