Rigging Inspection
Inspect ALL rigging before each lift: slings (wire rope, chain, synthetic web), shackles, hooks, and hardware. Remove from service if: wire rope has 10+ broken wires per rope lay, chain links are stretched/cracked, slings show cuts, abrasion, or chemical damage, hook throat is opened more than 15% of normal. Tag and remove defective rigging.
Load Calculations
Never exceed the Working Load Limit (WLL) of any rigging component. Account for sling angle — at 60° the effective capacity is 87% of rated, at 30° it drops to 50%. Identify all load weights before lifting. Add rigging weight to load weight. Apply a safety factor — never rig 'close to capacity.'
Crane Safety Zones
Establish a barricaded swing radius. No personnel under suspended loads — EVER. The operator must have a clear line of sight or a qualified signal person. Know the crane's load chart and radius limitations. Inspect crane pre-shift (daily). Ground conditions must support outrigger loads.
Signals & Communication
Use standardized hand signals (ASME B30.2) or two-way radio. Only ONE designated signal person gives crane commands. Emergency STOP signal can be given by ANYONE — use it if unsafe conditions arise. Confirm radio channel at pre-lift meeting. All lifts 10 tons or over require a lift plan.
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