Personal fall arrest systems (PFAS)
The personal fall arrest system (PFAS) consists of a harness, lanyard, and anchor point. The harness is worn by the roofer and is connected to an anchor point on the edge of the roof. The lanyard is then attached to the harness and the anchor point, creating a secure connection between the roofer and the roof. If the roofer were to fall, the PFAS would arrest their fall and prevent them from hitting the ground.