What is the purpose of edge protection devices on an acute ascent or descent?

• A. To reduce friction and distribute load away from sharp edges, protecting rope and equipment.
• B. To guide rope over a pulley to change direction.
• C. To increase friction for braking.
• D. To measure rope tension.

Answer: (A)

Edge protection devices are used when the rope path goes over a sharp or acute edge during ascent or descent. They provide a smooth protective surface and spread the load away from the edge, so the rope and gear aren’t bearing directly on the sharp edge. This reduces abrasion, heat, and the risk of rope damage, keeping the system safer and the rope movement smoother. They aren’t meant to guide rope over a pulley, increase braking friction, or measure rope tension.