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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>-l090-<strong>96</strong> (Rev-i)5. Lifting personnel or lifting loads abovepersonnel.6. Operating a hoist with lever extensions(for lever-operated hoists).7. Operating hoists with other thanmanual power (for h<strong>and</strong>-chain-operated hoists).8. Removing or obscuring warninglabels.8.1.4Design <strong>St<strong>and</strong>ard</strong>s .a. At a minimum, safety features <strong>and</strong> operationshall meet the provisions ofASME B30.16 <strong>and</strong>B30.21.b. Mechanical, electrical, <strong>and</strong> structuralcomponents ofhoist design shall meet acceptedhoist design st<strong>and</strong>ards contained in ASMEHST-IM, -2M, -3M, -4M, -5M, <strong>and</strong> -6M("Performance <strong>St<strong>and</strong>ard</strong> for Electric ChainHoists"; "Performance <strong>St<strong>and</strong>ard</strong> for H<strong>and</strong> Chain<strong>Manual</strong>ly Operated Chain Hoists"; "Performance<strong>St<strong>and</strong>ard</strong> for <strong>Manual</strong>ly Lever Operated ChainHoists"; "Performance <strong>St<strong>and</strong>ard</strong> for Electric WireRope Hoists"; "Performance <strong>St<strong>and</strong>ard</strong> for AirChain Hoists"; <strong>and</strong> "Performance <strong>St<strong>and</strong>ard</strong> for AirWireRope Hoists," respectively).8.1.5Design Factorsa. For electric- or air-powered hoists,load-suspending parts ofpowered hoists shall bedesigned so that the static stress calculated for therated load will not exceed 20 percent oftheaverage ultimate material strength. Thisrequirement is commonly reflected by quoting aminimum design factor of 5:1.b. For h<strong>and</strong>-chain-operated <strong>and</strong>manual-lever-operated hoists, load-suspendingparts shall be designed so that the static stresscalculated for the rated load will not exceed25 percent of the average ultimate strength. Thisrequirement is commonly reflected by quoting aminimum design factor of4:1.8.1.6 Load-Braking/Load-Controlling Mechanisms8.1.6.1 Electric-Powered Hoistsa. Under normal operating conditions withrated load <strong>and</strong> under test conditions with test loadsup to 125 percent ofrated load, the brakingsystem shall perform the following functions:1. Stop <strong>and</strong> hold the load hook whencontrols are released.2. Limit the speed ofthe load duringlowering, with or without power, to a maximum of120 percent ofthe rated lowering speed for theload being h<strong>and</strong>led.3. Stop <strong>and</strong> hold the load hook in theevent ofa complete power failure.b. The braking system shall have thermalcapacity for the frequency of operation requiredby the service.c. The braking system shall have provision foradjustments, where necessary, to compensate forwear.8.1.6.2 Air-Powered Hoistsa. Under normal operating conditions withrated load <strong>and</strong> under test conditions with test loadsup to 125 percent ofrated load, the brakingsystem shall perform the following functions:1. Stop <strong>and</strong> hold the load hook whencontrols are released.2. Prevent an uncontrolled lowering ofthe load in the event of a loss of air pressure.b. The braking system shall have thermalcapacity for the frequency ofoperation requiredby the service.c. The braking system shall have provision foradjustments, where necessary, to compensate forwear.8.1.6.3 H<strong>and</strong>-Chain-Operated HoistsThe hoist shall be designed so that when theactuating force is removed, it will automaticallystop <strong>and</strong> hold any test load up to 125 percent ofthe rated load.8.1.6.4 <strong>Manual</strong>-Lever-Operated Hoistsa. The hoist shall be equipped with aload-controlling mechanism.b. The load-controlling mechanism shallperform the following functions under normal8-5Chapter 8Hoists

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