Which mechanism should be employed when a fall occurs?

The correct mechanism for handling a fall, as indicated in the chosen option, involves a free fall followed by a brisk pull. This approach is based on the principles of fall protection systems that are designed to effectively arrest a fall while minimizing the potential for injury.

In a free fall situation, the individual falls for a short duration, allowing the fall arrest system to engage. The brisk pull refers to the quick tensioning of the safety harness or lanyard, which helps to stop the fall as soon as possible. This method is crucial because it allows the fall protection equipment to operate correctly by maintaining the shortest distance to arrest the fall, thereby reducing the risk of swinging or secondary impact injuries.

Other options highlight different approaches, but they may not provide the level of safety and effectiveness required in fall arrest scenarios. Immediate descent may imply giving no time for the safety system to activate, while slow descent could lead to prolonged exposure or further risks during a fall. Taking up slack before a fall can also create unnecessary tension in the system, failing to effectively utilize the mechanisms designed to catch and secure a person during an actual fall event.