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A
Never connect two active components (snap hooks or carabiners) to each other.
B
Never connect two active components (snap hooks or carabiners) to a single D-ring at the same time.
C
Never connect in a way that would produce a condition of loading on the gate.
Never attach to an object in a manner whereby the gate (of the snap hook or carabiner) would be
D
prevented from fully closing and locking. Always guard against false connections by visually inspecting
for closure and lock.
Never attach explicitly to a constituent subcomponent (webbing, cable or rope) unless specifically
E
provided for by the manufacturer's instructions for both subcomponents (snap hook or carabiner and
webbing, cable, or rope).
Never attach in a manner where an element of the connector (gate or release lever) may become
F
caught on the anchor thereby producing additional risk of false engagement.
Never attach a spreader snap hook to two side/positioning D-rings in a manner whereby the D-rings
G
will engage the gates; the gates on a spreader must always be facing away from the D-rings during
work positioning.
4.5 Personal Fall Arrest System:
A PFAS is an assembly of components and subsystems used to arrest a person during a fall event. A
PFAS is typically composed of an anchorage and a FBH, with an energy absorbing connecting device,
i.e., an SAL, an SRL, or a Fall Arrester Connecting Subsystem (FACSS), connected to the dorsal D-ring
of the FBH. PFAS components used in conjunction with this SRL should comply with ANSI Z359
requirements and applicable OSHA regulations.
4.6 Average Arrest Force and Arrest Distance:
Table 1B in Appendix A provides test data on typical performance attributes of the three principal
parameters: Arrest Distance, Average Arrest Force, and Maximum Arrest Force, listed by model
number and class. Testing is conducted under various environmental conditions, at ambient
temperature, hot, cold, and wet conditions. In manufacturer's tests, worst case performance attributes
of the SRL, connected at maxmimum below dorsal D-ring tie-off by user weight in non-Leading Edge
applications are:
5' Below D-Ring, Non-Leading Edge
Longest Arrest Distance
Largest Average Arrest Force
Largest Maximum Arrest Force
The Competent Person may find this data useful with planning anchorage location and calculating fall
arrest loads and distances from the walking/working level to the nearest obstruction or lower level. See
Section 5.
NOTE: Arrest distance is one part of the Minimum Required Fall Clearance (MRFC). The MRFC is
determined by consideration of multiple factors in fall protection. Attachment below the level of the
FBH D-ring will require additional fall clearance. MRFC is discussed in detail in Section 5.
7
Figure 2 - Non-Compatible Connections
310 to 420 lbs.
130 to 310 lbs.
(59 to 141 kg)
(141 to 191 kg)
114" (2.9 m)
852 lbs (3.8 kN)
1,315 lbs (5.9 kN)
154" (3.9 m)
742 lbs (3.3 kN)
1,092 lbs (4.9 kN)
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