15
Lanyards Instruction Manual
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instruction manual based upon date of manufacture.
Never attach the unused leg of the lanyard back to the harness at any location
other than a lanyard storage keeper.
Connecting to a Self-Retracting Lifeline: Connecting an energy absorbing
lanyard or component to a self-retracting lifeline is not recommended.
Special applications exist where it may be permissible. Contact Malta Dynamics
if considering connecting an energy absorbing lanyard to a self-retracting lifeline.
Knots: Knots of any kind are not approved in lanyards.
Strength is drastically
reduced by tie-offs using knots, tying around sharp edges, etc. Tie-offs using a
knot in a rope lanyard (at any location) reduces the lanyard strength by 50 percent
or more. Tie-off around an “H” or “I” beam can reduce the strength of lanyard by
approximately 70 percent due to cutting action of beam edges.
Anchorage:
Select a rigid anchorage point that is capable of sustaining the
loads specified in
LIMITATIONS FOR USE
Section of this manual. For fall arrest
applications, select anchorage locations that will minimize free fall and swing fall
hazards. For restraint applications, locate the anchorages such that no vertical
free fall is possible.
Free Fall:
Maximum free fall distance allowed for use in a Personal Fall Arrest
System is 6 ft. For use in a Restraint System, no vertical free fall is permitted. Do
not work above the anchorage level to avoid increased free fall distance.
Fall Arrest Forces:
The Personal Fall Arrest System must limit fall arrest forces to
900 lbs. Deceleration distance shall not be allowed to exceed 48 in.
Swing Falls:
Minimize swing falls by working as directly below the anchorage
point as possible. Do not permit a swing fall if injury could occur.
Fall Clearance:
Clearance required is dependent upon the subsystem and
lanyard properties. Energy absorbers can extend the fall arrest distance by up
to 48 inches. Other factors may influence the required clearance distances. Use
caution when assembling system components that could extend the fall arrest
distance (and therefore fall clearance required). Consider the following when
calculating fall clearance:
Clearance required is dependent on the following factors:
• Elevation of Anchorage
• D-ring / connector length
• Connecting Subsystem Length
• Movement of Harness
• Deceleration Distance
Attachment Element
• Free Fall Distance
• Length of Full Body Harness
• Worker Height
(FBH) Stretch
• Working Level See
Illustration 5
.
