What is the minimum tensile strength requirement for general use pulleys to avoid load failure?

The minimum tensile strength requirement for general use pulleys is essential for ensuring safety and effectiveness in rope rescue operations. A tensile strength of 36 kN for pulleys is crucial because it provides a robust safety margin that can handle the forces exerted during a rescue scenario. Pulleys are subjected to dynamic loads, and various factors such as the weight of the rescuer, the rescued individual, and potential sudden movements can significantly increase the load on the pulley. By using pulleys that meet or exceed this 36 kN requirement, practitioners can minimize the risk of equipment failure under stress, thereby enhancing the overall safety of the rescue operation.

This level of strength is recognized as a common industry standard for general use, ensuring that the equipment can withstand the most demanding conditions encountered in technical rescue situations. In other context, choices such as 19.5 kN, 5 kN, and 22 kN do not meet the necessary threshold to ensure adequate safety, as they may not support the loads safely encountered during rescues, especially in high-stress environments where unexpected forces could occur.