Chain Slings Flashcards
What should you check for when using chains?
Proper chain alloy for rigging applications
Identify chain markings
Inspect chain to manufacturer specs
What is the most commonly used chain for overhead lifting?
Grade 80
What is the design factor for chain slings?
4 to 1
Remove chains from service when west reaches what % of its original diameter?
10%
What % are chains designed to stretch to before breaking?
15%
What % wear should a chain be removed from service?
10%
What are the advantages of chain slings?
Strength
Multiple connections
Multiple hitch options
Heat resistance
Ideal for outdoor use
What are the disadvantages of chain slings?
Heavy
Limited flexibility
Unlike nylon slings, chains have no shock absorbency and can snap
Chains are abrasive
Metal to metal contact
What should you look for during chain sling inspection?
Stretch
Bends
Twists
Corrosion
Wear - 10%
Stretch - 5%
Cuts
Gouges
Cracks
Heat Damage
