Crane Lift Plans (CLP) must be based on worst case % of capacity (for example, gross deductions/chart capacity) for each particular crane configuration, location, and activity (e.g., unloading a delivery truck is a separate activity from erecting steel structure).Ħ.
If helicopter or critical lifts are involved, then for this purpose we need to submit Crane Lift Plan before-5 days.ĥ. Submission for the Crane Lift Plans must be done at least 48 hours before crane mobilization. Where Critical Crane Lifts Operations are involved, then only if authorized, may have to be reviewed by a Lifting professional engineer.Ĥ. A Crane Lift Plan is required for every crane lift on each project where the Lifting is requiredģ. Daily Safety Review for Crane OperationsĢ.The use and Planning Process for crane lifting has two major categories: The following are some instructions that could be very helpful for the personnel who are involved in the crane lifting. The CG must always be at the center of the lifting points.Lifting with a crane is always very risky and requires all mandatory safety precautions before the lifting activity proceeds. There was no means of keeping it stable once gravity started to act on it. In photo above, when the chocker was removed from the actuator, the load became eccentric and the CG was outside the anchor points. Never put on lifting points only on one side of the CG. Always ensure lifting points are directly above or equally spaced on either side of the Center of Gravity (CG) of the load. Especially, when the assembly is completely unstable and relying only on friction to keep it from rolling.Ģ. If the chocker placement is not correct, lower the load and reset the chokers when the load is on the ground and stable. Fortunately, no personnel were injured, but materials were damaged.ġ. They changed their rigging configuration that was holding the assembly upright without securing the load and the assembly tipped over. In 2015, a Contractor was attempting to up-right a prefabricated valve assembly. A Critical Lift Plan is required when the criteria (listed above) are met for a Critical Lift.īelow is an example of a Critical Lift Plan:Ĭomplex Lift: A non-routine crane lift requiring detailed planning and unusual or additional safety precautions. Critical Lift: A lift that exceeds 75 percent of the rated capacity of the crane or derrick and/or requires the use of more than one crane or derrick.īefore making a critical lift, a pre-lift meeting is conducted to ensure all involved parties understand all aspects of the lift.
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