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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)CHAPTER 1TERMINOLOGY AND DEFINITIONSThe following are specialized terms commonlyused when discussing hoisting <strong>and</strong> riggingoperations. Many may not be used in thisst<strong>and</strong>ard but are included for general information.The terms are arranged in alphabetical order.lllustrations are included for clarity.ABRASION: Surface wear.ACCELERATION STRESS: Additional stressimposed due to increasing load velocity.ALTERNATE LAY: Lay ofwire rope in whichthe str<strong>and</strong>s are alternately regular <strong>and</strong> lang lay.ANSI: American National <strong>St<strong>and</strong>ard</strong>s Institute.APPOINTED: Assigned specific responsibilitiesby the employer or the employer's representative.AREA, METALLIC: Sum of the cross-sectionalareas ofindividual wires in a wire rope or str<strong>and</strong>.ATTACHMENT: A device other thanconventional forks or load backrest extension,mounted permanently or removably on theelevating mechanism of a truck for h<strong>and</strong>ling theload. Popular types are fork extension clamps,rotating devices, side shifters, load stabilizers,rams, <strong>and</strong> booms.AUTHORIZED: Assigned by a duly constitutedadministrative or regulatory authority.AUXILIARY HOIST: Supplemental hoistingunit oflighter capacity <strong>and</strong> usually higher speedthan the main hoist.BACK STAY: Guy used to support a boom ormast or that section of a main cable, as on asuspension bridge, or cableway, <strong>and</strong> the like,leading from the tower to the anchorage.BAIL: A U-shaped member of a bucket, socket,or other fitting.BASKET OR SOCKET: The conical portion ofa socket into which a splayed rope end is inserted<strong>and</strong> secured with zinc.BATTERY-ELECTRIC TRUCK: An electrictruck in which thepower source is a storagebattery.BECKET LOOP: A loop ofsmall rope or astr<strong>and</strong> ofrope fastened to the end of a large wirerope to facilitate installation.BENDING STRESS: Stress on wires ofa wirerope imposed bybending. This stress need not beadded to direct load stresses. When sheaves <strong>and</strong>drums are ofsuitable size, bending stress does notaffect the normal life ofthe wire rope.BIRDCAGE: A colloquialism describing theappearance ofa wire rope that is forced intocompression. The outer str<strong>and</strong>s form a "cage"<strong>and</strong> at times displace the core.BIRDCAGING: The twisting offiber or wirerope in an isolated area in the opposite direction ofthe rope lay, causing it to take on the appearanceofa birdcage.BOOM (CRANE): A member hinged to therotating superstructure <strong>and</strong> used for supportingthe hoisting tackle.BOOM LINE: A wire rope for supporting oroperating the boom on derricks, cranes, draglines,shovels, <strong>and</strong> the like.BRAKE: A device used for slowing or stoppingmotion by friction or electromagnetic means.BRAKE, DRAG: A brake that provides stoppingforce without external control.BRAKE, HOLDING: A brake that setsautomatically <strong>and</strong> that prevents motion whenpower is off.BRAKE, PARKING: A device to prevent themovement ofa stationary vehicle.BRAKING, COUNTERTORQUE: A methodofstopping motion in which the power to themotor is reversed to develop torque in theopposite direction.BRAKING, DYNAMIC: A method ofcontrolling crane motor speeds when in theoverhauling condition to provide a retarding force.BRAKING, MECHANICAL: A method ofslowing motion byfriction.1-1Chapter 1Terminology <strong>and</strong> Definitions

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