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5.2 Attaching to an Anchorage
Examine the work area for possible hazards. Take caution to avoid overhead hazards such as cranes,
poles, overhead power cables, and walking/working surface hazards such as power cables, welding
leads, air and fluid hoses, including obstruction hazards such as vertical columns and stacks of
materials on the lower level. Eliminate hazards where possible.
Ensure the anchorage provides the Minimum Required Fall Clearance (MRFC) in the fall path below the
walking/working surface to prevent striking the lower level or an obstruction during a fall event. Take
action to avoid swing falls, which occur when the anchorage is not directly above the point where the
fall occurs.
Fall clearance and swing falls are subject to variable conditions. Anchor height, lateral movement, and
setback distance all affect anchor location with regard to fall clearance and swing falls.
The SRL may be attached to an overhead anchor, i.e., above the user's FBH dorsal D-ring, or a non-
overhead anchor, i.e., below the user's FBH dorsal D-ring. A non-overhead anchor may be a maximum
of 5' (1.5 m) below the user's FBH dorsal D-ring. Non-overhead anchor locations result in greater
contact between the lifeline and the edge and present greater abrasion risk hazards.
Use of a below D-ring anchorages should be as a last resort, when no other anchor option exists.
Performance testing has shown that a fall event over a leading edge will alter SRL performance
characteristics and fall clearance requirements. When anchored below the FBH back D-ring, fall
events will result in greater fall clearances. Reduced setback distances will also increase clearance
requirements. Non-overhead anchorage when the SRL is set back less than 5' (1.5 m) will result in the
greatest MRFC and the least amount of worker mobility due to swing fall. Greater set back distances
of 5' (1.5 m) or more will reduce the overall MRFC and allow for more lateral movement of the worker
when attached to a non-overhead anchorage.
If job site geometry allows it, a setback distance of 5' (1.5 m) is recommended to take full advantage of
the SRL performance. In addition, the Angle of Redirection of the lifeline, i.e., the angle of the lifeline as
it passes over the edge, must be at 90 degrees or more, never less, see Figure 7.
Do not attach the anchorage connector in a manner that places the edge higher than the connector,
see Figure 7.
Figure 7 - Leading Edge Angle of Lifeline Redirect
5.3 Attaching to an Anchorage - Tie-Back Applications
For applications that require the SRL-P to be tie-back onto itself around the appropriately rated
anchorage, the anchorage may also be overhead or up to a maximum of 5' (1.5 m) below the user's
FBH dorsal D-ring. The lifeline shall only pass through the leg-end tie-back carabiner one time and the
carabiner shall fully close around the lifeline that is wrapped around the anchorage. There is no limit
to anchorage size so long as the carabiner can fully close around the anchorage.
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