Full Line Catalog Page 194 Safety Equipment And Supplies

194 SM slings SLINGS FACTS & FEATURES CONT. INSPECTION Daily Inspection - Each day before using, the sling, all fastenings and attachments shall be inspected for damage or defects by a competent person designated by the employer. Additional inspections shall be performed prior to each use where severe conditions warrant. Damaged or defective slings shall be immediately removed from service. Periodic Inspection - OSHA specifies that alloy steel chain slings shall have a thorough periodic inspection by a competent person at least once every 12 months. Lift-All recommends that all slings have a thorough inspection by a competent person at least once every 12 months. These inspections must be recorded and maintained for each individual sling. In some instances, it is possible to repair slings, proof test and return them to service. Damaged components and sections of chain or wire mesh can be replaced. Hooks, links and other components that are in good condition can be salvaged from a damaged web or round sling, rewebbed, proof tested by Lift-All and returned to service. Repair - Lift-All strongly advises that damaged slings be repaired only by the manufacturer. PHYSICAL FACTORS Your care in the use and handling will prolong sling life significantly. The following physical factors should be considered when using any of the slings: 1. Cutting of synthetic sling, Nicking or Gouging of steel slings. Probably the number one cause of sling failure. Usually caused by a sharp or small diameter load edge against the sling. It can be prevented with proper padding. 2. Improper Loading - Shock loading, unbalanced loading, overloading and inadequate consideration for the effect of angle factors can adversely affect safety. Make sure the load weight is within the rated capacity of the sling(s) being used for both type of hitch and angle of lift. 3. Temperature - Avoid loads and environments where temperatures exceed the limits of the slings being used. All slings can be damaged by excessive heat. 4. Punctures & Abrasions seriously degrade sling strength. Rough load surfaces and dragging slings on the ground will damage all slings, steel or synthetic. Use proper padding between slings and rough loads. Never drag slings on ground or concrete floors. 5. Foreign Matter - Material such as metal chips and heavy grit can damage web slings, both internally and externally. Both synthetic and steel slings can be damaged by weld spatter and heat from a welding torch. Avoid contact with foreign matter whenever possible. 6. Ultraviolet Light - Nylon and polyester web slings are adversely affected by prolonged exposure to UV light, i.e., sunlight or arc welding. Inspect and remove if slings appear bleached and stiff. Store slings properly when not in use. 7. Improper Storage - Even in storage, synthetic and steel slings can degrade if not kept in clean, dry conditions. Lift-All recommends hanging slings on a rack. Web slings should be stored in a dark area to avoid unnecessary sunlight/UV degradation. 8. Chemical Environment - Slings exposed to certain chemicals or the vapors of these chemicals can lose some or all of their strength. When using slings in a chemical environment, contact Lift-All to assure sling compatibility. EFFECT OF ANGLE OF LIFT ON A SLING'S RATED CAPACITY Using slings at an angle can become deadly if that angle is not taken into consideration when selecting the sling to be used. The tension on each leg of the sling is increased as the angle of lift, from horizontal, decrease. It is most desirable for a sling to have a larger angle of lift, approaching 90. Lifts with angles of less than 30 from horizontal are not recommended. If you can measure the angle of lift or the length and height of the sling as rigged, you can determine the properly rated sling for your lift. What would be the rating of each sling rigged at this angle? 1. Calculate the Reduction Factor (RF). a. Using the angle from horizontal, read across the Angle Chart to the corresponding number of the Reduction Factor column. -OR- b. Divide sling height* [H] by sling length* [L (*Measured from a common horizontal plane to the hoisting hook) 2. Reduction Factor (RF) x the sling's rated capacity for the type hitch that will be used = Sling's Reduced Rating. OSHA and ASME B30.9 regulations require that all chain slings receive a thorough inspection at least once per year by a competent person. 800.944.8322 The MOST KNOWLEDGEABLE PROS in construction supplies 194

Previous Page
Next Page