Jan 6 (edited) • Equipment& Load Control Issues
Sling Angles Misunderstood
Incident Overview
A load was slung with two webbing slings at a wide angle. The team assumed each webbing sling carried half the load. In reality, the wide sling angle significantly increased tension in each sling. The lift approached accessory limits, despite the load being “within weight.”
What Went Wrong
Sling angle effect was not properly considered. The team treated load weight as the only factor, ignoring geometry.
Key Lessons Learned
Angle increases tension dramatically
120° is not the same as 60°
Geometry can overload “rated” slings
Safety Recommendations
Sling angles must be assessed before lifting. Use correct rigging to reduce angles and maintain capacity. Teach teams to recognise risk zones (wide angles / near-horizontal legs).
●LOLER Reg. 4 – Loads must remain within capacity.
●PUWER Reg. 4 – Accessories must be suitable.
●BS 7121-1 – Sling angles reduce capacity.
Key point
Geometry overloads slings.
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Sling Angles Misunderstood
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