Describe a "critical lift."

A "critical lift" refers to a lift that poses a significant risk due to its complexity or the weight of the load being lifted. This classification accounts for various factors that could impact the safety and success of the lift, including the involved load's weight, the height and distance of the lift, the rigging setup, and the experience of the crew.

In these scenarios, significant precautions are required. Critical lifts often necessitate extensive planning, including calculations to determine load limits, risk assessments, and detailed lift plans, to ensure safety standards are met and to mitigate any potential hazards associated with the lift. These careful preparations help prevent accidents and ensure that both the personnel and equipment are protected during the operation.

While factors like poor weather conditions or nighttime operations can definitely complicate a lift, they are not the primary considerations that define a critical lift. Instead, the fundamental characteristic is the inherent risks presented by the complexity or weight of the lift itself.