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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>-I090-<strong>96</strong> (Rev-I)1. Conduct a link-by-link inspection forthe following defects: bent or stretched links,cracks in any section oflink, scores, or abrasionstending to weaken the rings or hooks. Reject ifdiscovered.2. Check rings <strong>and</strong> hooks for distortion,cracks in weld areas, corrosion, scores, orabrasions tending to weaken the ring or hooks.Reject ifdiscovered.3. Perform inspection on anindividual-link basis. Ifany link does not hingefreely with the adjoining link, remove theassembly from service.b. Remove from service assemblies withdeformed master links or coupling links.c. Remove from service assemblies ifhookshave been opened more than 15 percent ofthenormal throat opening measured at the narrowestpoint or twisted more than 10 degrees from theplane ofthe unbent hook.d. Do not straighten deformed hooks or otherattachments on the job. Assemblies with suchdefects shall be reconditioned by themanufacturer.e. Remove from service assemblies withcracked hooks or other end attachments;assemblies with repairable defects shall bereconditioned or repaired prior to being returnedto service.f. Ifwear exceeds the values shown in Table15-2, remove the assembly from service.Table 15-2. Maximum allowable we~rat any point of link.Chain size(in.)1/43/81/25/83/47/811-1/4Maximumallowable wear(in.)3/645/647/649/6410/6411/6412/6416/64NOTE: For other sizes, consult chain orsling manufacturer.15.4.7 Slings-Testing15.4.7.1 Wire Ropea. All swaged <strong>and</strong> poured socket slingassemblies shall be certified as having beenproof-tested. All other sling assemblies shall beproof-tested when specified by the purchaser.b. As a minimum, the proofload shall be equalto the rated capacitybut shall not exceed:1.. 125 percent ofthe vertical ratedcapacity for single-leg, h<strong>and</strong>-tucked slings.2. 200 percent ofthe vertical ratedcapacity for mechanical-splice single-leg slings<strong>and</strong> endless slings.c. The proofload for multiple-leg bridle slingsshall be applied to the individual legs <strong>and</strong> shall beeither 200 percent for mechanical-spliced or 125percent for h<strong>and</strong>-tucked splice times the verticalrated capacity of a single-leg sling. Master linksto which multiple-leg slings are connected shall beproof-loaded to 200 percent times the forceapplied by the combined legs.d. Welded end attachments shall not be usedunless proof-tested at 2 times the rated capacityprior to initial use.e. Test loads described above shall be accurateto within -5 percent, +0 percent ofstipulatedvalues. A written letter ofcertification by themanufacturer or a pull test witnessed <strong>and</strong> certifiedin writing by a qualified person is acceptable.15.4.7.2 Synthetic Web Slingsa. When specified by the purchaser, web slingsof all types shall be certified as having beenproof-tested prior to initial use.1. The proofload for single-leg slings<strong>and</strong> endless slings shall be 200 percent ofthevertical rated capacity prior.2. The proofload for multiple-leg bridleslings shall be applied to the individual legs <strong>and</strong>shall be 200 percent ofthe vertical rated capacityofa single-leg sling. Masterlinks to whichmultiple-leg slings are connected shall beproof-loaded to 200 percent times the forceapplied by the combined legs.15-15Chapter 15Construction <strong>Hoisting</strong> <strong>and</strong> <strong>Rigging</strong>Equipment Requirements

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