1、Date of Issuance:February 15.2002ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria forAmerican Nationa!Standards.The Standards Committee that approved the code or standardwas balanc
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7、NY 10016-5990Copyright2002 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll Rights ReservedPrinted in U.S.A.ASME B30.8a-2001Following approval by the ASME R30 Committee and ASME.and after public review.ASME B30.8a-2001 was approved by the American National Standards Institute on Februray 23.2001.Ad
8、denda to the 1999 edition of ASME B30.8 are issued in the form of replacement pages.Revisions.additions,and deletions are incorporated directly into the affected pages.It is advisable,however,that thispage.the Addenda title and copyright pages,and all replaced pages be retained for reference.SUMMARY
9、 OF CHANGESThis is the first Addenda to be published to ASME B30.8-1999Replace or insert the pages listed.Changes given helow are identified on the pages by a margin note,(a).placed next to the affected area.The pages not listed are the reverse sides of the listed pages and containno changes.PageLoc
10、ationChange八798-0.2Definitions of stubility(barge)and trim,craneadded128-1.3.2(a)Revised158-1.9.1(d)Revised and Note added198-2.1.1(a)Revised268-3.2.3b)First paragraph revised8-3.2.3b)4)RevisedFLOATING CRANES AND FLOATING DERRICKSASME B30.8a-2001gudgeon pin:a pin connecting the mnast cap to apirch d
11、iamerer:the diameter of a sheave or rope drumderrick mast allowing rotation of the mast.measuied ai the centeriine of the rope.guy.derrick:a rope used to steady or secure the mastqualified person:a person who,by possession of a(99)or other member in the desired position.recognized degree in an appli
12、cable field or certificate ofhoist mechanism:a hoist drum and rope reeving sys-professional standing,or who,by extensive knowledge,tem used for lifting and lowering loads.training,and experience,has successfully demonstratedthe ability to solve or resolve problems relating to thehook,latch-type:a ty
13、pe of hook with a mechanicalsubject matter and work.device to close the throat opening of the hookradius(reach):the horizontal distance from the theo-jib:an cxtension attached to the boom point to provideretical intersection of the axis of rotation and theadded boom length for lifting specified load
14、s.The jibwateriine to the center of the hoist line(s)at themay be in line with the boom or offset to variouswaterline(see Fig.6).angles in the vertical plane of the boomrope:refers to wire rope unless otherwise specifiedland crane:a crane designed primarily for operationrope.rotation resistant:a wir
15、e rope consisting of anon land,inner layer of strand laid in one direction covered bylist:angle of inclination about longitudinal axis ofa layer of strand laid in the opposite dircction;thisbarge or pontoon.has the effect of counteracting torque by reducing thetendency of the finished rope to rotate
16、.load,rated:the maximum allowable working load inpounds(kilograms)designated by the manufacturer inshall:indicates that the rule is mandatory and mustbe followed.accordance with para.8-1.1.load.working:the external load in pounds(kilograms)should:indicates that the rule is a recommendation.the advis
17、ability of which depends on the facts in eachapplied to the crane or derrick.including the weightsituation.of load-attaching equipment.such as load blocks,shack-les,and slings.sill,derrick:a horizontal member connecting the footblock and stiff leg or a horizontal member conncctingload block.lower:th
18、e assembly of hook or shackle.the lower ends of a double member mast.swivei.sheaves.pins.and frame suspended by thehoisting ropes.soft patch:gasketed metal plate bolted over a deckor bulkhead opening.load block.upper:the assembly of sheaves.pins.andframe suspended from the boom.stabiliry(barge):the
19、tendency of a vessel to return(a)to an upright position after having been inclined bymast(derrick):the upright member of the derrickan external force.used for support of the boom.standby:a crane or derrick that is not in regularmust cap(spider):the fitting at the top of the derrickservice,but one th
20、at is used occasionally or intermit-mast to which the guys are connected.tently as required.multiple sheave block:a block consisting of two orstanding rope(pendant):a supporting rope that mainmore sheaves held in place by the same cheek plates.tains a constant distance between the two componentsconn
21、ected by the rope.normal operuting conditions:conditions during whicha cranc or derrick is performing functions within thestructural competence:the ability of the machine andscope of the original or modified design.Under theseits components to withstand the stresses imposed byapplied loads.condition
22、s,the operator is at the operating control devices.paw!(dog):a device for positively holding a membersuperstructure:the rotating upper frame structure ofthe crane and the operating machinery mounted thereon.against motion in one or more directions.swing:rotation of the superstructure or derrick boom
23、pin,boom foot:the pin connecting the foot of thefor movement of loads in a horizontal direction aboutboom to the boom seat or superstructure.the axis of rotation.ASME B30.8a-2001FLOATING CRANES AND FLOATING DERRICKSRotationVertical line intersectingthe waterline and thecenter line of rotationCraneBo
24、cmRadius(Reach)LiftedloadWaterlineBargeFIG.6 REACH FOR FLOATING CRANESswing mecharismn.the machinery invoived in provid-Section 8-0.3 References99)ing rotation of the superstructure or derrick boom.The following is a list of publications referenced intackle:an assembly of ropes and sheaves arrangedt
25、his Standard.for lifting,lowering,and pulling.ANSI A12.1-1973.Safety Requirements for Floor andton(short):two thousand pounds(907.2 kg).Wall Openings.Railings.and Toe Boardstowing pad.a large pad eye to which mooring linesANSI A14.3-1984.Ladders-Fixed-Safety Requireare secured.menisANSI S1.8-1969(R1
26、984),Preferred Reference Quanti-trim:angie of inclination ahout transverse axis of thetics for Acoustical Levelsbarge or pontoon.ANSI Z26.1-1983,Safety Code for Safety Glazinga)frim,crane:the inclination of the longitudinal centerMaterials for Glazing Motor Vehicles Operating online of the base of t
27、he crane from the horizontal.Land Highwaysvangs(vang lines).tackle attached to each side of aPublisher:American National Standards Institutederrick boom near the outer end,and to the base or(ANSI).11 West 42nd Street,New York,NY 10036pontoon at a lateral distancc,by means of which theANSI/AWS D1.1-8
28、6,Structural Welding Code-Steelboom is rotated(slewed)from one side to the otherANSI/AWS D14.3-82,Specification for Welding Earth-(usually used on floating derricks).moving and Construction Equipmentwhipline(runner or auxiliary line):a separate hoistPublisher:American Welding Society(AWS),550 NWrope
29、 system usually of a lighter load capacity thanLeJeune Road,Miami.FL 33135provided by the main hoist.windlass:a deck machine,usually power operated.used for heaving in or paying out anchor chain.May also be obtained from the American National StandardsInstitute(ANSI).11 West 42nd Street.New York.NY 10036.
