Sling Safety Training
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Sling Safety Training






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Sling Safety Training Sling Safety Training Presentation Transcript

  • Sling Safety
  • Objectives
    • Be familiar with OSHA’s regulations regarding slings.
    • Understand safe sling use.
    • Be able to identify and describe conditions necessitating sling’s replacement.
  • 29 CFR 1910.184 Slings
    • Sling : An assembly which connects the load to the material handling (lifting)
    • equipment.
  • Three Types of Slings
    • Chain Slings
    • Wire Rope Slings
    • Synthetic Web Slings
  • Frequency of Sling Inspections
    • All slings are to be inspected each day prior to their use. This includes chain, wire rope and synthetic slings and their attachments, i.e. master links, alligators, clips, hooks, quick-alloys etc..
    • A thorough plant-wide inspection is required to be performed at least once every 12 months.
  • Sling Load Capacity and Sling Angles
    • The load capacity of the sling is determined by its weakest component.
    • Never overload a sling. 
    • Remember, the wider the sling legs are spread apart, the less the sling can lift!
    1000 lbs Lift Capacity 707 lbs Lift Capacity 500 lbs Lift Capacity
  • Chain Sling Inspection Items
    • Cracks, stretches, severe nicks, gouges, welding splattered or deformed master links, coupling links, chains or other components. 
    • One leg of a double or triple chain sling is longer than the others.  
    • Hooks have been opened more than 25% of the normal throat opening measured at the narrowest point or twisted more than 10 degrees from the plane of the unbent hook.  
    • Chain size at any point of any link is less than stated in the chart on the next slide, the sling shall be removed.   
  • Chain Sling Wear Chart 13/16 29/32 1 1 3/32 1 3/16 1 13/32 1 1 1/8 1 ¼ 1 3/8 1 ½ 1 ¾ 15/64 19/64 25/64 31/64 19/32 45/64 ¼ 3/8 ½ 5/8 ¾ 7/8 Minimum Allowable Chain Size (Inches) Chain Size (inches) Minimum Allowable Chain Size (Inches) Chain Size (inches)
  • Special Precautions
    • Chain slings should never be modified or repaired by operators! Only qualified maintenance personnel may do so.
    • It is important to realize that the capacity of a sling decreases as the angle at which it is used to lift increases.
  • Chain Slings
    • Only chain slings purchased from the manufacturer are allowed. No homemade slings allowed!!
  • Wire Rope Sling Inspection Items
    •   Three randomly distributed broken wires in one strand, in one rope lay.
    • Wear or scraping of 1/3 the original diameter of outside individual wires.
    • Kinking, crushing or any damage resulting in distortion of the wire rope.
    • End attachments that are cracked, worn or deformed.
    • Corrosion of the rope or end attachments.
  • Synthetic Web Sling Inspection Items
    • Acid or caustic burns on the sling.
    • Melting or charring of any part of the sling’s surface.
    • Snags, punctures, tears, or cuts.
    • Stitching is broken or worn.
    • The sling is stretched. To assist operators in determining if a sling is stretched, manufacturers incorporate a red wear cord inside of the sling. When this red wear cord can be readily seen upon inspecting the sling, the sling has been stretched and is to be removed.
  • Inspection of Alligator Clamps
    • 1) Wear pads.
    • 2) Jaw locking mechanism whether spring action, or pull chain must be functional.
    • 3) Pins on the alligator.
    • 4) Attachment ring.
    • 5) Quick-alloys .
    • Remove alligators from service if the teeth are worn even with wear indicator teeth!
  • Safe Usage Practices
    • Slings should be stored off of the floor and hung on racks whenever possible in a clean, dry environment.
    • Never drag slings across the floor. 
    • Always hook with a “closed hook” arrangement (hooks facing out).
  • Safe Usage Practices (Cont.)
    • Never shock load slings.
    • Keep loads balanced to prevent overloading slings.
    • Always lift loads straight up.
    • Never rest a load on a sling, or pinch a sling between the load and the floor.
    • A sling should not be pulled from under a load when the load is resting on the sling.
    • Make sure the hook is always over the center of gravity of the load before lifting it.
    • Do not apply a load to a twisted, knotted or kinked chain.
    • Do not force or hammer hooks or chains into position.
  • Safe Usage Practices (Cont.)
    • Hands and Fingers shall not be placed between the sling and the load while the sling is being tightened around the load.
    • Clean chains regularly as dirt and grit can cause excessive wear at the link bearing points.
    • Never shorten a sling with knots, bolts or other makeshift devices.
    • Protect the chain’s surface from contact with sharp corners, which can cause permanent damage through gouging or abnormal stress and wear.
  • In Conclusion
    • Select the right sling for the job.
    • Inspect slings prior to use, removing from service any in question.
    • Remember the effect of sling angles on load capacities.
    • Properly store slings when finished to avoid damage.