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Planning a lifting operation: unforeseen situations

  • What happened?

    Event 1:

    • A 70 ton crane needed to be repositioned slightly.
    • The outrigger was pulled in and the crane driver moved the crane back.
    • The 12 ton counterweight was positioned 90° to the crane chassis and the boom inclination at 80°.
    • The crane tipped over and hit the piping rack of a steam cracker cooling tower with its jib.
    • The driver was hospitalised with a serious pelvis injury. Minor material damage, no leaks.

    Event 2:

    • A steel pipe was being lifted by a crane using a sling.
    • A worker walked between the pipe and the crane to pick up a piece of debris.
    • The pipe moved  and the worker got stuck between the pipe and a crane leg.
    The orange crane balancing against metal work. The vehicle has been partially lifted off the ground to one side.
  • Why did it happen?

    In both cases, the incidents happened after operators reacted to unforeseen issues, without taking time for adequate planning.

    Event 1:

    Inappropriate risk evaluation.

    Crane moved with attached counterweight wrongly positioned and outrigger completely pulled–in.

    Event 2:

    Sling system to lift the load was not performed correctly, causing sudden movement of the pipe.

    Worker moved between the pipe and crane leg to clear debris.

    The grounded pipe and crane leg.
  • What did they learn?

    Conduct risk analysis before any lift operation.

    At all times, respect the rules for:

    • sling operations.
    • moving lifting vehicles.
    • Roles and positions of all personnel involved in the lift.

    If unforeseen situations arise during a lift, do not deviate from the procedure.

    If work conditions change, stop and reassess the risks.

    What learn - icon
  • Ask yourself or your crew

    How could incidents like these happen here?

    Think of a time when something unplanned happened during a lifting operation. What could the consequences have been?

    If the lifting plan needs to change, what should we do?

    Where should you be positioned at each stage of the lift?  Do you know?

    What else can we learn from these incidents to make today’s operation safer?

    Ask your crew - icon
Published on 09/03/20 657 Views 0 likes

2 incidents occurred after operators reacted to unforeseen issues, without taking time for adequate planning. If unforeseen situations arise during a lift, stop and reassess the risks.