Safety Focus of the Week: The Basic Rigging Plan (Revisited)
Every lift should consider the following:
- Designate a qualified person to perform the rigging.
- Establish a communication protocol between the rigger and the crane operator.
- Work with the crane operator to determine:
- Crane radii and boom lengths to achieve the pick
- Crane capacity at the maximum pick radius at required boom lengths
- Crane reduction factors for special lifts or operations
- Clearances around the crane and along the pick travel path
- Inspect the rigging:
- Does the rigging have proper identification?
- Does all of the rigging have known working load limits?
- Evaluate the weight of the load and consider the capacity of the rigging.
- Evaluate the load’s center of gravity and plan the rigging to be balanced about the CG.
- Select/measure the appropriate sling angle.
- Consider any side or angular loading.
- Provide rigging protection from for any sharp corners, edges, or abrasive surfaces.
- Provide a tag line to control the load.
- Consider special environmental conditions (excessive heat, corrosivitity, etc.).
- Clear all personnel from suspended load path.