Preventable Nature of Crane Accident
Need for Cranes and the Risks Involved
Crane Accidents in Past
Reasons for crane failure
Unseasonal weather conditions like high wind speeds, extreme cold, heat, and precipitation.
Buckling or collapsing when subject to lifting and torsion stresses caused by poor operations like exceeding lifting and moving speeds or slewing speeds.
Poor maintenance, i.e. poor inspection of wire ropes, improper greasing of vital cotter pins etc.
Poor foundations, due to improper outrigger use or poor positioning of counterweights.
Electrocutions caused by accidental contact of crane boom with an overhead power line.
Struck by a crane boom or jib while dismantling the boom, specifically when the pins holding its sections together, are removed without adequate support to prevent the sections from falling.
Improper crane assembly and improper rigging.
Ways to Prevent Crane Accidents
- Adhering to posted load moment indicators and weight limits to avoid boom collapse, dropped loads, and potential tipping.
- Following recommended weather conditions for undertaking oppressions. Keeping a constant watch on wind meters installed at vital points on a crane.
- Fully inspecting every area, analysing ground conditions, and managing deflection levels.
- Restricting crane operation to trained and qualified personnel.
- Keeping the following in mind while reading load charts:
- Crane can hold more weight when on outriggers rather than on tires alone.
- Crane can hold more weight if boom stays over the front throughout the lift.
- Higher the load radius, less weight the crane can lift.
● Ensure all safety devices are in place.
● Ensure that all personnel are a safe distance from the equipment, the loads and any other objects within the lift zone and its perimeters.
● Use a standard set of hand signals and communication protocols in facilitating the safe operation of cranes.
● Keep loads as low to the ground as is reasonably safe when performing lifts.
● Secure the load after it has been lifted and properly stow the crane, stabilisers, winches and any other moving parts.