Company Name __________________________ Job Name __________________________ Date________
Many crane accidents occur because the crane was used to lift
more than its rated capacity. Crane accidents are generally serious and always
expensive. The following discussion is intended to highlight the value of safety
devices and help you avoid accidents:
Every crane is required to have load charts and the operator
is expected to know how to use them. When was the last time your operator
studied the charts before setting up to make a pick?
Knowing the weight of the load is the single most important
part of making a safe pick. If the weight of the load is unknown, how can you
set the crane up in the proper configuration? The easiest answer to this
situation is install a load indicating device on the crane.
Boom angle indicators are an absolute must. How can you use
the load charts if you cannot measure the boom angle? If you do not use the load
charts, you are guessing!
Setting the crane up level and on solid ground is an absolute
must! You can throw the load charts out the window if the crane is not set up
level, because you have changed the tipping moment. Setting cranes up on loose
or unstable soil is just as bad. If the crane settles on one side, you have
changed the tipping moment again.
Increasing counterweight or securing crane with cables to
avoid tipping situations is never an acceptable practice. When you increase
counterweights to avoid a tipping situation, you risk the possibility of
structural failure. If these operations continue for long enough, the repeated
stress placed on the boom is certain to result in a boom failure.
Inspect your rigging daily or more frequently under demanding conditions. Ensure all hooks have safety latches. Lifting beams and spreader bars must have their rated capacities marked on them.
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