What must not be used for hoisting or lowering tools?

Using cords for hoisting or lowering tools is considered unsafe due to their lack of strength and reliability compared to other lifting devices. Cords can easily fray or snap, especially under the stress of heavy tools or in adverse conditions, leading to potential accidents and injuries. Cords also do not provide the necessary stability and control that other options offer, which is crucial when handling tools at height.

In contrast, chains, manually operated lifts, and slings are all designed for lifting and support tasks. Chains are strong and durable, making them suitable for heavy lifting. Manually operated lifts, such as hoists, provide the mechanical advantage necessary to safely lift heavy tools. Slings, made from robust materials, allow for secure and stable attachment when hoisting, distributing the weight more evenly. Thus, opting for reliable and purpose-designed equipment is critical for ensuring safety in these operations.