(7) Repairing and reconditioning alloy steel chain slings. (i) Worn or damaged alloy steel chain slings or attachments shall not be used until repaired. When welding or heat testing is performed, slings shall not be used unless repaired, reconditioned and proof tested by the sling manufacturer or an equivalent entity. (ii) Mechanical coupling links or low carbon steel repair links shall not be used to repair broken lengths of chain. (8) Effects of wear. If the chain size at any point of any link is less than that stated in Table N-184-2, the sling shall be removed from service. (9) Deformed attachments. (i) Alloy steel chain slings with cracked or deformed master links, coupling links or other components shall be removed from service. TABLE N-184-1.-Rated CapaCITY (WORKING LOAD LIMIT), FOR ALLOY STEEL CHAIN SLINGS Rated Capacity (Working Load Limit), Pounds [Horizontal angles shown in parentheses] (1) Rating of multileg slings adjusted for angle of loading measured as the included angle between the inclined leg and the vertical as shown in Figure N-184-5. (2) Rating of multileg slings adjusted for angle of loading between the inclined leg and the horizontal plane of the load, as shown in Figure N-184-5. (3) Quadruple sling rating is same as triple sling because normal lifting practice may not distribute load uniformly to all 4 legs. TABLE N-184-2.-MINIMUM ALLOWABLE CHAIN SIZE AT ANY POINT OF LINK 1384 18/64 2564 3184 19/32 464 18 114 1% 12 14 13/16 28/32 132 the narrowest point or twisted more than 10 degrees from the plane of the unbent hook. (f) Wire rope slings. (1) Sling use. Wire rope slings shall not be used with loads in excess of the rated capacities shown in Tables N-184-3 through N184-14. Slings not included in these tables shall be used only in accordance with the manufacturer's recommendations. (2) Minimum sling lengths. (i) Cable 1 laid and 6 x 19 and 6 × 37 slings shall have a minimum clear length of wire rope 10 times the component rope diameter between splices, sleeves or end fittings. 116 11332 (ii) Slings shall be removed from service if hooks are cracked, have been opened more than 15 percent of the normal throat opening measured at (ii) Braided slings shall have a minimum clear length of wire rope 40 times the component rope diameter between the loops or end fittings. (iii) Cable laid grommets, strand laid grommets and endless slings shall have a minimum circumferential length of 96 times their body diameter. (3) Safe operating temperatures. Fiber core wire rope slings of all grades shall be permanently removed from service if they are exposed to temperatures in excess of 200°F. When nonfiber core wire rope slings of any grade are used at temperatures above 400°F or below minus 60°F, recommendations of the sling manufacturer re Rope garding use at that temperature shall be followed. (4) End attachments. (i) Welding of end attachments, except covers to thimbles, shall be performed prior to the assembly of the sling. (ii) All welded end attachments shall not be used unless proof tested by the manufacturer or equivalent entity at twice their rated capacity prior to initial use. The employer shall retain a certificate of the proof test, and make it available for examination. TABLE N-184-3.-RATED CAPACITIES FOR SINGLE LEG SLINGS 6x19 and 6×37 Classification Improved Plow Steel Grade Rope With Fiber Core (FC) Rated capacities, tons (2,000 lb) HT=Hand Tucked Splice and Hidden Tuck Splice. For hidden tuck splice (IWRC) use values in HT columns. S=Swaged or Zinc Poured Socket. 'These values only apply when the D/d ratio for HT slings is 10 or greater, and for MS and S slings is 20 or greater where: D=Diameter of curvature around which the body of the sling is bent; d=Diameter of rope. TABLE N-184-4.-Rated CAPACITIES FOR SINGLE LEG SLINGS 6x19 and 6×37 Classification Improved Plow Steel Grade Rope With Independent Wire Rope Core (IWRC) TABLE N-184-4.-RATED CAPACITIES FOR SINGLE LEG SLINGS-Continued 6x19 and 6×37 Classification Improved Plow Steel Grade Rope With Independent Wire Rope Core (IWRC) HT=Hand Tucked Splice. For hidden tuck splice (IWRC) use Table I values in HT column. MS Mechanical Splice. S=Swaged or Zinc Poured Socket. 1 These values only apply when the D/d ratio for HT slings is 10 or greater, and for MS and S Slings is 20 or greater where: D= Diameter of curvature around which the body of the sling is bent; d=Diameter of rope. 1 These values only apply when the D/d ratio is 10 or greater where: D=Diameter of curvature around which the body of the sling is bent; d=Diameter of rope. TABLE N-184-6.-RATED CAPACITIES FOR Single Leg SLINGS-Continued 1 1 These values only apply when the D/d ratio is 20 or greater where: D=Diameter of curvature around which the body of the sling is bent; d= Diameter of component rope. TABLE N-184-7.-RATED CAPACITIES FOR 2-LEG AND 3-LEG BRIDLE SLINGS |