What wind speed should a qualified person evaluate hoisting operations for personnel platforms?

The evaluation of hoisting operations for personnel platforms is critical to ensure safety and compliance with industry standards. The correct wind speed for this evaluation is 20 mph. At this speed, wind conditions can significantly affect the stability and control of both the crane and the personnel platform. Strong winds can lead to swaying or unintended movement of the load, posing a considerable risk to the safety of personnel working at height.

In operations involving personnel platforms, it’s essential to maintain a safe working environment, which includes monitoring environmental factors like wind speed. A qualified person must assess the conditions to determine whether it's safe to proceed with the operation or if it should be postponed until conditions improve.

Wind speeds below this threshold may be considered safe for other types of crane operations but may not adequately account for the risks associated with personnel platforms, which require stricter safety measures. Therefore, the choice of 20 mph reflects a balance between operational feasibility and the necessity of ensuring personnel safety in potentially hazardous weather conditions.