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Demystifying Non-Critical Lifts: A Modern Rigging Approach
In the world of rigging, the concept of "critical lifts" is well-established. But what about lifts that fall outside this category? Let's explore the concept of non-critical lifts and how to approach them safely.
- What is a Non-Critical Lift?
While every lift demands attention to safety, some lifts pose a lower inherent risk. A non-critical lift typically exhibits the following characteristics (all must be met): - Minimal Risk of Injury: The lift poses minimal risk of personal injury or death.
- No Personnel Involved: Personnel are not being lifted.
- Safe Rigger Positioning: Rigging crew doesn't work directly under the suspended load.
- Single Crane Operation: Only one crane is involved in the lift.
- Load Capacity Considerations: The load weight is less than 75% of the crane's rated capacity.
- Environmentally Safe Load: The load is not hazardous or radioactive.
- Clear of Electrical Hazards: The lift takes place entirely away from live electrical conductors.
- Protected Equipment and Utilities: The lift avoids unprotected equipment and utilities.
- Stable Load Handling: The load is inherently stable and not prone to tipping.
- Solid Foundation: The crane's foundation soil conditions are well-understood.
- Direct Line of Sight: The crane operator has a direct and unobstructed view of the load throughout the lift.
- Minimal Load Manipulation: The load doesn't require mid-air turning or drifting.
- Controlled Lifting Dynamics: The lift avoids shock loadings or lateral forces.
Important Considerations:
- Non-Exhaustive Checklist: This list is not exhaustive, and every lift should be evaluated individually.
- Safety First: Even seemingly simple lifts deserve a safety-first approach. Some argue that every lift should be treated critically due to the inherent risks involved.