terminals must be proof-loaded before placing thesling in initial service.The COMSECOND/COMTHIRDNCBINST11200.11 series has rated capacity charts enclosed fornumerous wire rope classifications. You must knowthe diameter, rope construction, type of core, grade,and splice on the wire rope sling before referring tothe charts. The charts will give you the vertical-ratedcapacity for the sling. The test weight for single-legbridle slings and endless slings is the vertical-ratedcapacity (V.R.C.) multiplied by two or (V.R.C. x 2 =sling test weight).The test load for multiple-leg bridle slings mustbe applied to the individual legs and must be twotimes the vertical-rated capacity of a single-leg slingof the same size, grade, and wire rope construction.When slings and rigging are broken out of the TOAfor field use, they must be proof-tested and taggedbefore being returned to CTR for storage.RecordsThe crane crew supervisor must establish andmaintain a card file system containing a record ofeach sling in the unit’s inventory.ProofTest/Inspection Sheets (fig. 3-36) are used todocument tests made on all items of weight-liftingslings, spreader bars, hooks, shackles, and so forth.These records are permanent and contain thefollowing entries at a minimum:1.2.3.4.5.6.7.8.Sling identification number (unit location andtwo-digit number with Alfa designation foreach wire rope component)Sling lengthCable body diameter (inches) and specifi-cationsType of spliceRated capacityProof test weightDate of proof testSignature of proof test directorAll the slings must have a permanently affixed,near the sling eye, durable identification tagcontaining the following information:1. Rated capacity (in tons) (vert. SWL)2. Rated capacity (in tons) (45-degree SWL)3. Identification numberSpreader bars, shackles, and hooks must have therated capacities and SWL permanently stenciled orstamped on them. OSHA identification tags can beacquired at no cost from COMTHIRDNCB DET, PortHueneme, California, or COMSECONDNCB DET,Gulfport, Mississippi. Metal dog tags are authorizedproviding the required information is stamped ontothe tags.StorageWire rope slings and associated hardware must bestored either in coils or on reels, hung in the riggingloft, or laid on racks indoors to protect them fromcorrosive weather and other types of damage, such askinking or being backed over. Slings are not to be lefton the crane at the end of the workday.Sling and Rigging Gear KitsThe NCF has slings and rigging gear in theBattalion Table of Allowance to support the riggingoperations and the lifting of CESE. The kits 80104,84003, and 84004 must remain in the custody of thesupply officer in the central toolroom (CTR). Thedesignated embarkation staff and the crane testdirector monitor the condition of the rigging gear.During the BEEP, the two crane crew supervisorsnormally have the responsibility to inventory thecontents of the kits. The rigging kits must be storedundercover.Wire Rope Sling InspectionAll wire rope slings must be visually inspected forobvious unsafe conditions before each use. Adetermination to remove slings from service requiresexperience and good judgment, especially whenevaluating the remaining strength in a sling afterallowing for normal wear. The safety of the slingdepends primarily upon the remaining strength. Wirerope slings must be immediately removed fromservice if any of the following conditions are present:1. Six randomly distributed broken wires in onerope lay or three broken wires in one strand inone lay2. Wear or scraping on one third of the originaldiameter of outside individual wires3-30
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