6d (edited) • Communication Failures
Case Study 29: Inadequate Lighting Affecting Crane Signalling
Incident Overview
A lifting operation was carried out during low-light conditions inside a partially enclosed structure.
Hand signals between the slinger and crane operator became difficult to see, particularly as the load moved deeper into the structure.
What Went Wrong
Lighting levels were insufficient for safe signalling. The lift continued without additional controls or alternative communication methods.
Key Lessons Learned
- Visibility is a control measure
- Poor lighting increases communication errors
- Signalling must be clearly visible at all times
Safety Recommendations
Provide adequate task lighting or alternative communication systems before lifting in low-light areas.
●LOLER: Reg 8
●PUWER: Reg 4 (suitability), Reg 8 (information/instructions)
●BS 7121: Part 1 (communications/signalling requirements; visibility control measures)
Wolf Lifting Dynamics Limited – Safety Hub | Case Study 29
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Case Study 29: Inadequate Lighting Affecting Crane Signalling
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