When is a double anchor preferable over a single anchor?

A double anchor system is preferable in scenarios where there is a risk of equipment or personnel encountering hazards such as hot surfaces or sharp edges. In such situations, using a double anchor allows for greater stability and redundancy, ensuring that if one anchor is compromised (for example, if a sharp edge were to damage the rope), the second anchor would still secure the technician.

This setup enhances safety by providing an additional layer of protection against potential failure points. The design of the rope access system takes into consideration various environmental factors, ensuring that technicians have the appropriate safeguards in place while working in challenging conditions. By using a double anchor when facing such risks, technicians can maintain higher safety standards and reduce the likelihood of accidents.

Other options relate more to efficiency and weight considerations rather than safety against environmental hazards, which is the primary rationale for opting for a double anchor in these specific conditions.