Double-legged lanyards are used for 100% tie-off safety. It is important, however, to understand the safe and proper use of a double-legged lanyard when one leg is not being used.
If one leg of a double-legged lanyard (with a shock absorber pack OR tubular-style shock absorber) is not being used, the unused leg should not be attached to any permanent fixture on a harness, such as side D-rings. This will inhibit proper operation of the shock absorber design.
Lanyard with a Shock Absorber Pack
When using a double-legged lanyard with a shock absorber pack and electing not to use one leg of the lanyard, connect the unused leg to a harness with a pull-free lanyard ring. The ring will easily disengage in the event of a fall and the shock absorber pack will function properly, arresting the fall and reducing peak fall arrest forces to under 900 lbs. (4kN). All Miller® brand harnesses include a pull-free lanyard ring designed for storing a lanyard or extra lanyard leg when not in use.
Tubular Shock-Absorbing Lanyards
Each leg of a double-legged tubular shock-absorbing lanyard contains a built-in shock absorber that works independently of the other. Storing the unused leg of a double-legged, tubular shock-absorbing lanyard to the pull-free lanyard ring on a harness has no effect on maximum fall arrest forces. During a fall, the lanyard leg attached to the anchorage connector will deploy as designed and fall arrest forces will be kept below 900 lbs. (4kN), while the lanyard leg attached to the pull-free lanyard ring will remain secured to the ring, unaffected.
Tubular shock-absorbing lanyards take into account foreseeable misuse. If a user unintentionally attaches the unused leg of a double-legged tubular shock-absorbing lanyard to their side D-ring or another permanent fixture on the harness, the unused leg will not have an effect on peak arrest forces.
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