What is necessary to rig when the movement of materials may be hazardous?

When the movement of materials presents potential hazards, it is crucial to implement a personal fall arrest system. This system is vital for ensuring the safety of workers who may be exposed to falling objects or risks associated with elevated work areas. A fall arrest system includes components such as harnesses, lanyards, and anchor points, designed to prevent a worker from falling or to safely stop a fall should it occur.

In contexts where materials are being lifted or moved, workers can be positioned near the load's path, increasing the risk of injury from falling objects. Therefore, equipping personnel with a personal fall arrest system is essential to provide protection in these scenarios. Proper training in the use of this system is equally important, as it ensures that workers know how to fall safely while working at heights or in precarious environments.

Other options do relate to safety but do not specifically address the need for protection against falls when moving materials. For instance, a scaffold system provides a platform for work at heights, but it does not protect against falls without a personal fall arrest mechanism in place. Similarly, hand safety signals facilitate communication during operations but do not provide physical safety support. Meanwhile, a lifting mechanism may assist in moving materials safely but does not address the need for personal fall