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DOE-STD-1090-96, DOE Standard Hoisting and Rigging Manual ...

DOE-STD-1090-96, DOE Standard Hoisting and Rigging Manual ...

DOE-STD-1090-96, DOE Standard Hoisting and Rigging Manual ...

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<strong>DOE</strong>-<strong>STD</strong>-I090-<strong>96</strong> (Rev-I)operating conditions with test loads up to125 percent ofrated capacity:1. Stop <strong>and</strong> hold the load when the leverforce is removed <strong>and</strong> the lever stroke is completed.2. Provide for incremental movement ofthe load when lifting or lowering.c. The friction brake mechanism shall haveprovision for adjustment where necessary tocompensate for wear.8.1.8 Load Chain8.1.8.1 Electric-Powered, Air-Powered,<strong>and</strong> <strong>Manual</strong>-lever-OperatedHoistsa. Load chain may be either roller or weldedlink type (see Figure 8-9). Chain shall be pitched(calibrated) so as to pass over all load sprocketswithout binding.8.1.7 Wire Ropea. Wire rope shall be ofa constructionspecified by the hoist manufacturer or by aqualified person.b. H a load is supported by more than one partofwire rope, the tension on the parts shall beequalized.c. Socketing shall be done in the mannerspecified by the manufacturer ofthe assembly orthe rope.d. Eye splices shall be made in a mannerrecommended by a qualified person. Ropethimbles should be used in the eye.e. Swaged or compressed fittings shall beapplied as recommended by the rope, hoist, orfitting manufacturer or a qualified person.f. Use rope having an independent wire-rope,wire-str<strong>and</strong> core, or othertemperature-damage-resistant core ifthe rope willbe exposed to ambient temperatures greater than180 degrees F (82 degrees C).g. The rope ends should be attached to thehoist in a manner to prevent disengagementthroughout rated hook travel. No less than twowraps ofrope shall remain on the anchorage ofthehoist load sprocket (drum) when the hook is in itsfully extended position, unless a lower-limitdevice is provided, in which case one wrap shallremain on each anchorage ofthe drum hoist.8.1.8.2Roller TypeWelded-Unk TypeFigure 8-9. load chain.b. The load chain shall be proof-tested by thechain or hoist manufacturer with a load at leastequivalent to 1.5 times the hoist's rated loaddivided by the number ofchain parts supportingthe load.c. Ifa load is supported by more than one partofload chain, the tension on the parts shall beequalized.H<strong>and</strong>-Chain-Operated Hoistsa. The h<strong>and</strong> chain shall be ofa shape <strong>and</strong> pitchto fit the h<strong>and</strong>-chain wheel without binding orjamming under normal operating conditions.b. Theh<strong>and</strong> chain shall be guarded to preventdisengagement from the h<strong>and</strong>-chain wheel.c. The h<strong>and</strong> chain shall withst<strong>and</strong>, withoutpermanent distortion, a force ofthree times thepull required to lift the rated load.Chapter 8Hoists 8-6

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