Where is the correct location to attach lanyards on harnesses?

Attaching lanyards to the middle back near the shoulder blades is the correct choice because this location provides the optimal balance and support for the worker when using a fall protection system. This positioning helps to distribute the load evenly across the harness in the event of a fall, reducing strain on any single part of the body and minimizing the risk of injury.

When lanyards are secured at the middle back, it allows for the proper alignment of the harness, ensuring that the worker remains upright and can be easily retrieved after a fall. Additionally, this placement helps to keep the lanyard out of the way, preventing entanglement with tools or equipment.

The other locations are less suitable for various reasons. For instance, attaching lanyards at the waist level can cause a fall to be more severe, as it does not provide the same level of support and can lead to greater impact forces on the body. Attaching them on the front of the harness may also interfere with the worker's movement and accessibility to tools, while securing them under the arm straps can lead to discomfort and restrict movement, making it potentially hazardous. Therefore, the middle back is the safest and most effective location for lanyard attachment on harnesses.