Rope slings

High-alloy or heat-treated vessels (since it would not be advisable for the field to be doing welding on these vessels after they arrive on site, and wire rope slings could contaminate the vessel material)... 

Fig. 13.26 Lifting a 70-tonne steel fonndation into place supported by rope slings.

Table 19.3 shows the working load limits for a variety of wire rope slings made from 10mm diameter wire and operating at various angles (see BS EN 13414). 

Hgures 19.12. (a) Three-leg wire rope sling (b) Two-leg chain sling... 

Parts Holder Synthetic Web Sling. Use of synthetic web slings in areas where fiimes or vapors are present is a violation of OSHA 29 CFR 1910.184(i)(6). Constant exposure to solvent vapors could result in premature failure of synthetic web sling. Recommend use of wire rope sling instead. 

Example 15-5 A hoist with 10,000-lb capacity will lift a 7,500-lb (3.75 ton) load. A wire rope sling will lift the load. If the lift uses a vertical hitch, what size rope is needed to lift the load safely Consider two kinds of ropes ... 

TABLE 15-10 Rated Load for Polyester Rope Slings, lb (Design factor—5)... 

Wire rope slings also require regular inspection because the first signs of failure often are not readily noticeable. A rope failure could result in a crippling ii jury or even death. 

Table 27.3. Maximum safe working loads up to the angle illustrated for man-made fibre rope slings. (Courtesy Bridon Fibres Plastics)...

Chains, rope slings and lifting gear-safe working checklist... 

Ensure that slingers understand that doubling up the sling does NOT double up the Safe Working Load avoid this practice if possible. Limit the use of endless wire rope slings. 

Ensure that wire rope slings are protected from sharp corners of the loads, by suitable packings. 

Shipbuilding (Reports on Ropes and Rope Slings) Order 1961 637... 

Wire rope slings shall have permanently I affixed, legible identification markings stating... 

All splices in rope slings provided by the employer shall be made in accordance with fiber rope manufacturers recommendations. 

Splicing. Spliced fiber rope slings shail not be used uniess they have been spliced in accordance with the foiiowing minimum requirements and in accordance with any additional recommendations of the manufacturer ... 

End attachments. Fiber rope slings shall not be used if end attachments in contact with the rope have sharp edges or projections. 

Removal from service. Natural and synthetic fiber rope slings shall be immediately removed from service if any of the following conditions are present ... 

Employers must use natural- and synthetic-fiber rope slings that have permanently affixed and legible identification markings that state the rate capacity for the type(s) of hitch(es) used and the angle upon which it is based, type of fiber material, and the number of legs if more than one. 

Scaffolds shall be suspended from metal outriggers, brackets, wire rope slings, hooks, or means that meet equivalent criteria (e.g., strength, durability). 

Load refers to the object(s) being hoisted and/or the weight of the object(s) both uses refer to the object(s) and the load-attaching equipment, such as, the load block, ropes, slings, shackles, and any other ancillary attachment. 

Synthetic slings are protected from Abrasive, sharp or acute edges, and configurations that could cause a reduction of the sling s rated capacity, such as distortion or localized compression. Note Requirements for the protection of wire rope slings are contained in 29 CFR 1926.251(c)(9). 

Eyes in wire rope slings must be fabricated with thimbles. 

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