Which part is the most critical part of the fall arrest system?

The anchorage is the most critical part of a fall arrest system because it serves as the primary point of attachment for the entire system. It must be secure, strong, and properly installed to support the weight of the individual in the event of a fall. The anchorage effectively absorbs the forces experienced during a fall and distributes them safely to a stable structure.

In a fall arrest system, if the anchorage is inadequate or fails, it could render the entire system ineffective, regardless of the quality of other components like the harness, lanyard, or connectors. Therefore, ensuring that the anchorage point is capable of bearing the necessary loads and is compliant with relevant safety standards is paramount for the safety of the worker.

While every component of the fall arrest system has its own importance, the anchorage is fundamentally the backbone that holds the entire system in place and guarantees the worker's safety.