1、ASME B30.26 INTERPRETATIONSReplies to Technical InquiriesJune 2010 Through June 2014FOREWORDThis publication includes all of the written replies issued between the indicated dates by theSecretary, speaking for the ASME B30 Standards Committee, Safety Standard for Cableways,Cranes, Derricks, Hoists,
2、Hooks, Jacks, and Slings, to inquiries concerning interpretations oftechnical aspects of ASME B30.26, Rigging Hardware.These replies are taken verbatim from the original letters except for a few minor typographicaland editorial corrections made for the purpose of improved clarity. In some few instan
3、ces, areview of the interpretation revealed a need for corrections of a technical nature; in these cases,a corrected interpretation follows immediately after the original reply.These interpretations were prepared in accordance with the accredited ASME procedures.ASME procedures provide for reconside
4、ration of these interpretations when or if additionalinformation is available that the inquirer believes might affect the interpretation. Further, personsaggrieved by an interpretation may appeal to the cognizant ASME Committee or Subcommittee.ASME does not “approve,” “certify,” “rate,” or “endorse”
5、 any item, construction, proprietarydevice, or activity.I-1ASME B30.26 INTERPRETATIONSInterpretation: 26-5Subject: ASME B30.26-2004, Paragraphs 26-2.9.4.4 and 26-2.8.4(i)Date Issued: June 23, 2010Question (1): I am requesting a definition or quantification of “free to rotate and pivot.”Reply (1): “F
6、ree to rotate” requires that the device is not fixed and is capable of relativelyunrestricted motion to turn on its axes. If the user has concerns regarding the forces required torotate the device on its axes, they should contact the device manufacturer.Question (2): What is the appropriate or recom
7、mended thread class for the internal thread ofa tapped hole used for swivel hoist rings?Reply (2): Paragraph 26-2.9.4.4 does not provide design information for thread class. For specificmaterial systems or applications, the manufacturer or a qualified person should be contacted.Interpretation: 26-6S
8、ubject: ASME B30.26-2010, Section 26-1.5, IdentificationDate Issued: October 5, 2011Question (1): Per para. 26-1.5.1, if a shackle body does not have all the identification markings,such as manufacturers name, trademark, rated load, and size, does the shackle conform tostandard as required?Reply (1)
9、: No.Question (2): Per para. 26-1.5.1, if shackle body identification markings such as manufacturersname, trademark, rated load, and size are not forged, cast, or die stamped, does the shackleconform to standard as required?Reply (2): No.Question (3): Per para. 26-1.5.2, if a shackle pin does not ha
10、ve all the identification markings,such as manufacturers name, trademark, rated load, material type, or grade, does the shacklepin conform to standard as required?Reply (3): No.Interpretation: 26-7Subject: ASME B30.26-2010, Paragraph 26-6.5.1Date Issued: June 3, 2014Question (1): Does the identifica
11、tion referred to in para. 26-6.5.1 apply to each individualcomponent?Reply (1): No.Question (2): Does the identification referred to in para. 26-6.5.1 apply to the device?Reply (2): Yes.I-2ASME B30.26 INTERPRETATIONSReplies to Technical InquiriesMay 2006 Through October 2009FOREWORDThispublicationin
12、cludesallofthewrittenrepliesissuedbetweentheindicateddatesbytheSecretary, speaking for the ASME B30 Standards Committee, Safety Standard for Cableways,Cranes, Derricks, Hoists, Hooks, Jacks, and Slings, to inquiries concerning interpretations oftechnicalaspectsofASMEB30.26,RiggingHardware.Theserepli
13、esaretakenverbatimfromtheoriginallettersexceptforafewminortypographicaland editorial corrections made for the purpose of improved clarity. In some few instances, areviewoftheinterpretationrevealedaneedforcorrectionsofatechnicalnature;inthesecases,acorrectedinterpretationfollowsimmediatelyaftertheori
14、ginalreply.These interpretations were prepared in accordance with the accredited ASME procedures.ASME procedures provide for reconsideration of these interpretations when or if additionalinformationisavailablethattheinquirerbelievesmightaffecttheinterpretation.Further,personsaggrievedbyaninterpretat
15、ionmayappealtothecognizantASMECommitteeorSubcommittee.ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietarydevice,oractivity.I-1ASME B30.26 INTERPRETATIONSInterpretation: 26-1Subject:ASMEB30.26-2004,RiggingHardwareDateIssued:May22,2006Background: The term “manu
16、facturer” is defined in B30.26-2004 as, “The entity responsibleforthephysicalproductionofanitem.”Question:Canitbeinterpretedfromthedefinitionasitappliestotheidentificationsectionslistedabovethatthe”entityresponsible”isthecompanythatwasresponsibleforhavingapartmadetotheirspecificationsandnotnecessari
17、lythecompanythatphysicallyproducesapart?Reply:Yes.Interpretation: 26-2Subject:ASMEB30.26-2004,RiggingHardwareDateIssued:October17,2008Background:Paragraph26-2.9.4.4(a)states:“Whenusedinathreadedhole,theeffectivethreadlengthshallbe112timesthediameteroftheboltforsteel(seeFig.8).Forotherthreadengagemen
18、tsor engagements in other materials, contact the swivel hoist ring manufacturer or a qualifiedperson.”Question(1):Whatisthebasisforthe112timeseffectivethreadlength?Reply(1):B30.26isnotadesignormanufacturingstandard.Thesubcommitteesolicitedtheadvice of several major swivel hoist ring manufacturers wh
19、en this chapter was written. Theswivelhoistringmanufacturerspresentatthemeetingagreedthatathreadengagement112timestheboltdiameterwasadequatetoprovidetherequired factorofsafetyforsteel.Otherthreadengagements or materials are permitted with the approval of the manufacturer or a qualifiedperson.Questio
20、n(2):Isitaruleofthumb?Reply(2):No.Question (3): Is it based on a certain factor of safety calculated from the preload force andshearyieldstrength,shearultimatestrengthofthetappedmaterial,orsomethingelse?Reply(3):SeeReply(1).Question(4):Woulditbebettertoalsoprovidethemanufacturerorqualifiedpersonwith
21、aminimumsafetyfactorrecommendation?Reply(4):PerSection26-2.2,designfactorshallbeaminimumof5.I-2ASME B30.26 INTERPRETATIONSInterpretation: 26-3Subject:ASMEB30.26-2004,RiggingHardwareDateIssued:February18,2009Question(1):DoesASMEB30.26requireraisedorstampedlettersfortheirmarkings?Reply(1):Yes.Eitherof
22、thosemethodsmaymeetpara.26-1.5.1,whichstates,“Eachnewshacklebodyshallhaveforged,cast,ordie-stampedmarkingsbythemanufacturer.”Question(2):Doshacklesrequireweighttesting?Reply(2):Paragraph26-1.4.1statesthatprooftestingisnotrequired,unlessspecifiedbythepurchaser.Ifprooftestingisdone,theStandardrequires
23、aninspectionforconditionsstatedinpara.26-1.8.4.Interpretation: 26-4Subject:ASMEB30.26-2004,RiggingHardwareDateIssued:October28,2009Question:Inpara.26-2.5.1(c),doestheword“grade”refertothegradeofeyeboltorgradeofmaterial?Forexample,doesitreferto“Grade8”or“AISI8620”?Reply: The grade requirement is only to mark the alloy eyebolts with an “A” or “Alloy” todistinguish them from carbon steel eyebolts. It does not refer to chain or bolt grades or AISIanalysis.I-3INTENTIONALLY LEFT BLANKI-4
