Understanding the Shift from “Leading Edge” to “Class 2” SRLs

When manufacturing life-saving equipment, maintaining compliance with the latest safety standards is not just best practice, it’s a critical responsibility. Recent updates to the ANSI Z359.14-2021 standard have clarified the classification of self-retracting lifelines (SRLs), leading to changes in how these devices are described and understood. In this article, we will clarify the definitions, implications, and misinterpretations of ANSI’s updates to the Class 2 SRL standards to keep your workers safe on the job site. At FrenchCreek, we are committed to providing clear and accurate information about these developments to help ensure safety on the job site.

What Are Class 1 SRLs?

Class 1 SRLs are designed for use with overhead anchorage points. These devices are optimized to minimize free-fall distance and prevent contact with sharp or abrasive edges. By anchoring above the worker, Class 1 SRLs ensure that the lifeline remains in an ideal position, reducing swing fall hazards and enhancing overall safety. They are well-suited for environments where elevated anchor points are readily available, making them a preferred choice for many fall protection applications.

To learn more about OSHA requirements for anchorage points and fall protection, visit the OSHA Fall Protection Overview.

What’s Changed: From “Leading Edge” to “Class 2”

One of the significant updates in ANSI Z359.14-2021 is the reclassification of SRLs designed for edge work. These devices, previously known as SRL-LEs (Self-Retracting Lifelines for Leading Edge applications), are now categorized as “Class 2” SRLs. According to the updated standard:

“Class 2 devices were previously described as self-retracting devices with leading edge capability…This description has been removed and the new classes were created.”

This change was made to resolve confusion stemming from OSHA’s Subpart M definition of “leading edge,” which refers to a moving, unprotected side on a construction site. By adopting the term “Class 2,” ANSI provides clearer guidance and avoids misinterpretation.

You can reference the ANSI Z359.14-2021 Standard for further details on ANSI standards.

What Are Class 2 SRLs?

Class 2 SRLs meet the stringent testing requirements from ANSI to be deemed a Class 2 SRL. These testing requirements allow a Class 2 SRL to be used below the dorsal D-ring level of a worker. Class 2 SRLs are specifically engineered to handle the challenges posed by edge work. These challenges include:

• Increased Free-Fall Risks: When used with foot-level anchor points, Class 2 devices can result in longer free-fall distances, increasing the likelihood of injury.
• Edge Contact: Sharp or abrasive edges can compromise the integrity of the lifeline, leading to potential equipment failure.

It’s important to note that Class 2 SRLs are intended as a last resort. ANSI Z359.14-2021 emphasizes:

“This device, when used with a foot-level anchor point, poses significant risk of injury…The only purpose of this device is to make a fall survivable and to prevent a fatality. A fall over an edge should always be considered the very last option in protecting a worker at height.”

Testing vs. Real-World Conditions

Although Class 2 SRLs undergo rigorous testing, these tests are conducted in controlled environments. Real-world conditions, such as variable surface textures, unexpected fall distances, and sharp edges, can introduce hazards not accounted for in laboratory settings. For this reason, it’s crucial to prioritize elevated anchor points and avoid foot-level tie-offs whenever possible.

At FrenchCreek, we recommend using restraint systems, like rope grabs, for edge work. These systems ensure workers are positioned safely away from edges, eliminating the need for fall arrest systems and significantly reducing risk.

Elevated Anchorage: A Key Takeaway

One of the primary lessons from the updated standard is the importance of elevated anchorage points. Elevated anchor points:

• Decrease the potential for free-fall injuries
• Enhance the overall performance of fall protection systems
• Help ensure compliance with safety standards

ANSI advises against relying on Class 2 devices unless absolutely necessary, stating:

“Every effort should be made to select or install an elevated anchorage of sufficient height to reduce or eliminate free fall.”

Proper planning and training are vital to implementing effective fall protection solutions.

Clear Warnings and User Education

ANSI now requires Class 2 SRLs to include prominent warning labels to further improve safety. For example, these devices must indicate:

“Warning: This Class 2 device, when attached to a foot-level anchorage, poses significant risk of injury…normal use of this device MAY NOT PREVENT A SERIOUS INJURY.”

FrenchCreek has long emphasized the importance of understanding the limitations of fall protection equipment. By educating users about proper application and risks, we align with ANSI’s goal of fostering a safety-first approach.

Looking Ahead: Clarity for Safer Worksites

The ANSI Z359.14-2021 standard represents a positive step forward in improving the safety and understanding of SRLs. At FrenchCreek, we’re dedicated to helping safety professionals and workers navigate these changes and adopt best practices. By focusing on education, proper planning, and innovative solutions, we can build safer environments for everyone.

Contact us today for more details about fall protection systems and Class 2 SRLs or to explore FrenchCreek’s product offerings.