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Hazardous crane loads

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Maintenance work at a refinery required new tubes to be fitted to a fan cooler ... the load on the cranes increased and the hoist lines were no longer vertical. ... – PowerPoint PPT presentation

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Title: Hazardous crane loads


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Hazardous crane loads
An lpb toolbox talk
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Case study 1
  • Maintenance work at a refinery required new tubes
    to be fitted to a fan cooler
  • The tubes were being lifted in a tube tray, which
    had open ends. The tubes were not secured in any
    way.

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Case study 1
  • When the tray was directly over the crane cab, it
    somehow tilted, allowing the tubes to slide out
    and fall towards the cab.
  • Amazingly the crane driver only suffered minor
    cuts to one leg.

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Points for consideration
  • Ensure that loads do not contact structures
    during the lift.
  • Baskets or trays should be designed to retain
    items even if tilted or jolted during the lift.
  • Consider what lies beneath the load and the
    result of a dropped object.

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Case study 2
  • A redundant observation/control tower was to be
    demolished.
  • Two cranes were used to take the weight of the
    tower as the legs on one side were cut. The tower
    was then to be lowered onto its side and cut up.

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Case study 2
  • As the tower tilted the load on the cranes
    increased and the hoist lines were no longer
    vertical.
  • The weight of the tower had been underestimated
    and the cranes became overloaded, with the
    following results.

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Points for consideration
  • The weight and location of the centre of gravity
    of the lift must be known accurately.
  • The lifting plan must allow work to be safely
    halted if problems arise.
  • Lifts involving more than one crane need
    particular attention to planning and coordination.

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Lesson learned
  • This is a reminder to take all lifts seriously,
    from the lightest and least complex to the
    heaviest and most complex.
  • Proper rigging and securing of loads, and correct
    planning SAVES LIVES.

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Other incidents
  • Crane failure results in dropping of a heavy load
    (LPB 159)
  • Driver jumps from overturning crane (LPB 148)
  • Failure of a crane during a heavy lift (LPB 148)
  • Failure of a crane lifting rope - a near miss
    (LPB 148)

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Disclaimer
  • Whilst the Institution of Chemical Engineers has
    made every effort to ensure the accuracy of the
    information contained in this training
    presentation, it remains the responsibility of
    those responsible for the operations to ensure
    that the regulations and guidance issued by the
    authorities are consulted, that an appropriate
    risk assessment is carried out and that
    appropriate procedures are stipulated and
    followed.
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