In work at height, self-retracting lifelines (SRLs) are widely used as fall protection devices. However, when work is performed near structural edges, relying solely on standard SRLs still presents safety risks that are often overlooked.
These risks are most prevalent at unprotected structural edges. In the field of fall protection, the term Leading Edge specifically refers to structural edges where guardrails or other protective measures have not yet been installed. Typical examples include the outer edges of floor slabs under construction, roof perimeters, and the outermost sections of steel structures. These locations represent areas where fall hazards are most concentrated.
1. Practical Issues Associated with Structural Edges
When a fall occurs at a structural edge, the connecting lifeline of the fall arrest device is likely to come into contact with concrete or metal edges. If the load is concentrated on a sharp edge, the lifeline may suffer severe abrasion or, in extreme cases, be cut through entirely.
In addition, these working conditions often make it difficult to establish an overhead anchorage point. As a result, the self-retracting lifeline must be installed at a horizontal or low anchorage position. This significantly increases both the impact force and the swing distance during a fall, further elevating the load and failure risk of the fall protection system.
2. International Approaches to Fall Protection at Structural Edges
In many overseas markets, work at structural edges is classified as a distinct application scenario known as unprotected leading edge work. Dedicated Leading Edge self-retracting lifelines have been developed accordingly. Their design objectives typically include:
Enhanced cut and abrasion resistance of the lifeline
To reduce the risk of damage when the lifeline contacts structural edges during a fall.Optimized energy absorption and braking systems
Designed to accommodate horizontal or low-level anchorage and effectively control fall arrest forces.Clearly defined application limits and installation requirements
Including restrictions on anchorage location, installation angle, and usage conditions to minimize the risk of misuse.
The core objective is straightforward: to reduce the likelihood of fall protection system failure caused by edge contact in leading edge applications.
3. Current Technical Status in China
At present, specialized fall protection equipment designed specifically for unprotected structural edge conditions has not yet been widely adopted in China. Related technologies and applications remain at an exploratory stage.
Fclimb focuses on the research, development, and manufacture of fall protection devices. We continuously monitor safety requirements in complex working conditions such as structural edges and are committed to providing more reliable fall protection solutions.