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

More documents

Recommendations

Info

5.4.2 The stability factor against overturning of a temporary suspended workingplatform should not be less than 3 based on the maximum overturningmoment, resulting from the combined load specified in clause 5.2.1.5.4.3 For mobile suspended working platforms having a trolley which is notoperated on trolley track, the factor of safety against overturning shouldbe at least 3, see Fig. 7.5.4.4 Every permanent suspended working platform for which stability againstoverturning is achieved either by the self-weight of the in-board portion ofthe roof trolley or by the self-weight and counterweights, should have afactor of safety against overturning of at least 3 in each case.5.4.5 In case where the self-weight of the in-board portion of the roof trolley orthe counterweights are insufficient to provide a factor of safety againstoverturning of 3, the stability against overturning should be achieved bythe holding down strength of the roof such as to provide an overall factorof safety against overturning of at least 3.27
5.5 Counterweight5.5.1 Where counterweights are used to achieve the stability againstoverturning, the design of the suspended working platform should ensurethat the balancing moments cannot be adversely affected by easy removalof any counterweight.5.5.2 The materials used for counterweight are such that they cannot beremoved or discharged accidentally. Water or other liquids, earth, clay,sand, chipping or aggregates cannot be used as counterweights(regulation 7(a) of SWPR).5.5.3 Every portable counterweight should have its weight permanently anddistinctly stamped, engraved or embossed in it (regulation 7(b) of SWPR).5.5.4 All counterweights should be securely attached at the inner end of theoutriggers to prevent tampering by any person (regulation 7(c) of SWPR).5.5.5 When counterweights are used to achieve stability of the roof trolley, theframe should be so designed that counterweights cannot be easilyremoved. The counterweights should form an integral part of the rooftrolley and should be secured to the structure.5.5.6 The counterweights should be so placed that in the event of the failure ofthe working platform (e.g. tilting), the counterweights should be capableof sustaining the loads and the working platform.5.6 Suspension5.6.1 Every working platform should be supported on two independentsuspension wire ropes at or near each end such that in the event of thefailure of one suspension wire rope, the other wire rope is capable ofsustaining the weight of the working platform and its load and preventingit from tilting (regulation 14(2) of SWPR).28
Page 1 and 2: Code of Practice forSafe Use and Op
Page 3: This Code of Practice is prepared b
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
Page 19 and 20: 4.2.3 Responsibility of working per
Page 22 and 23: 5.2.2 Working platforms should be c
Page 24 and 25: 5.3.7.3 In the case of davit arm co
Page 26 and 27: 5.3.7.5 Where parapet wall clamps a
Page 29: 5.4 Stability Against Overturning5.
Page 33 and 34: 5.6.8 Adequate arrangements (e.g. t
Page 35 and 36: 5.8.3 If the rope is to be wound on
Page 37 and 38: 5.10.4 The secondary brake should b
Page 39 and 40: 5.13.5 The place where persons acce
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
Page 52 and 53: 8.1.5 During the inspection, functi
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
Page 62: Occupational Safety and Health Bran

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

Create successful ePaper yourself

Delete template?

Save as template?