30-2_Edtn_2005.pdf

AN AMERICAN NATIO NAL STANDARDOverhead andGantry Cranes(Top Running Bridge,Single or Multiple Girder,Top Running Trolley Hoist)ASME B30.2-2005(Revision of ASME B30.2-2001)Safety Standard for Cableways,Cranes,Derricks,Hoists,Hooks,Jacks,and SlingsCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME B30.2-2005(Revision of ASME B30.2-2001)Overhead andGantry Cranes(Top Running Bridge,Single or MultipleGirder,Top RunningTrolley Hoist)Safety Standard for Cableways,Cranes,Derricks,Hoists,Hooks,Jacks,and SlingsAN AMERICAN NATIONAL STANDARDThree Park Avenue New York,NY 10016Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:December 30,2005The next edition of this Standard is scheduled for publication in 2008.There will be no addendaissued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Interpretations are published on the ASME Web site under the Committee Pages athttp:/www.asme.org/codes/as they are issued,and will also be published within the next editionof the Standard.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approve,”“rate,”or“endorse”any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assume any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2005 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.vCommittee Roster.viIntroduction.viiiSummary of Changes.xChapter 2-0Scope,Definitions,and References.1Section 2-0.1Scope of B30.2.1Section 2-0.2Definitions.1Section 2-0.3References.5Chapter 2-1General Construction and Installation.7Section 2-1.1Markings.7Section 2-1.2Clearances.7Section 2-1.3General Construction Runways and Supporting Structure.8Section 2-1.4Crane Construction.8Section 2-1.5Cabs Normal or Skeleton(if Provided).8Section 2-1.6Lubrication.9Section 2-1.7Service Platforms(Footwalks).9Section 2-1.8Stops and Bumpers.10Section 2-1.9Rail Sweeps.11Section 2-1.10Guards for Moving Parts.11Section 2-1.11Truck Frame Drop.11Section 2-1.12Brakes and Braking Means.11Section 2-1.13Electrical Equipment.12Section 2-1.14Hoisting Equipment.15Section 2-1.15Warning Devices or Means for a Crane With a Power-TravelingMechanism.16Section 2-1.16Manual.17Chapter 2-2Inspection,Testing,and Maintenance.18Section 2-2.1Inspection.18Section 2-2.2Testing.19Section 2-2.3Maintenance.19Section 2-2.4Rope Inspection,Replacement,and Maintenance.20Chapter 2-3Operation.22Section 2-3.1Qualifications for and Conduct of Operators.22Section 2-3.2Handling the Load.23Section 2-3.3Signals.26Section 2-3.4Miscellaneous.26Section 2-3.5Crane Lockout/Tagout.26Figures1Cantilever Gantry Crane.22Gantry Crane.33Overhead Crane.34Semigantry Crane.35Wall Crane.36Recommended Arrangement of Controllers or Master Switches(Three-Motor Crane).137Recommended Arrangement of Controllers or Master Switches(Four-Motor Crane).14iiiCopy