4
2.7 FREE FALL:
When anchored overhead, SrL-Les will limit the free fall distance to 2 ft. (61 cm) or less. To avoid increased fall
distances, anchor the SrL-Le directly above the work level. Avoid working where your lifeline may cross or tangle with that
of another worker. Avoid working where an object may fall and strike the lifeline; resulting in loss of balance or damage to
the lifeline. Do not allow the lifeline to pass under arms or between legs. Never clamp, knot, or prevent the lifeline from
retracting or being taut. Avoid slack line. Do not lengthen SrL-Le by connecting a lanyard or similar component.
2.8 HAzARdS:
Use of this equipment in areas where surrounding hazards exist may require additional precautions to reduce
the possibility of injury to the user or damage to the equipment. Hazards may include, but are not limited to: high heat,
caustic chemicals, corrosive environments, high voltage power lines, explosive or toxic gases, moving machinery, sharp
edges, or overhead materials that may fall and contact the user or fall arrest system.
2.9 SHARP EdgES:
The Nano-Lok edge Self retracting Lanyard has been successfully tested for horizontal use and for falls
over a steel edge without burrs. As a result, the Nano-Lok edge may be used in situations where a fall may occur over
similar edges such as those found on steel shapes or metal sheeting. Tie-off (anchorage) level restrictions shown in
Figures 5 and 6 must be observed. Avoid working where the lifeline will continuously or repeatedly abrade against sharp
or abrasive edges. eliminate such contact or protect edges using a heavy pad or other means.
WARNING:
The allowable angle
of redirection of the lifeline at the
edge over which a fall might occur
(see Figure 3 A, B and C.), measured
between the two sides formed by the
redirected lifeline (B in Figure 5D),
must be at least 90 degrees. In other
words, working above the level at which
the SRL-LE is anchored (example:
Figure 3 C) and being exposed to an
edge hazard is dangerous because this
will cause the lifeline to “redirect” at a
sharper angle if a fall occurs and may
cut or damage the lifeline. Failure to
heed this warning may result in serious
injury or death.
Figure 3 – Allowable Angle of Redirection
OK
OK
NO
A
B
C
WARNING:
Do not work on the far side of an opening, opposite the SRL-LE anchorage point.
Failure to heed this
warning may result in serious injury or death.
2.10 BOdy SUPPORT:
A Full Body Harness must be used with the SrL-Le. The harness
connection point must be above the user’s center of gravity just below the harness
back dorsal D-ring. A body belt is not authorized for use with the Nano-Lok edge
SrL-Le. A fall occuring when using a body belt may cause unintentional release and/
or injuries due to improper body support.
2.11 SWINg FALLS:
Swing falls occur when the anchorage point is not directly above
the point where a fall occurs (see Figure 4). The force of striking an object in a
swing fall may cause serious injury. In a swing fall, the total vertical fall distance
will be greater than if the user had fallen directly below the anchorage point, thus
increasing fall clearance required to safely arrest the user. Use Figures
5A through 5D (6A through 6D for WrapBax) to determine the fall clearance for
your application. minimize swing falls by working as directly below the anchorage
point as possible. Never permit a swing fall if injury could occur.
2.12 FALL CLEARANCE:
Figures 5A through 5D and 6A through 6D illustrate Fall
Clearance requirements. ensure adequate clearance exists in the fall path to prevent
striking an object during a fall. If a user is working at a position that is not directly
below the SrL-Le anchorage point, the clearance required and vertical fall distance
increase. Figures 5D and 6D provide the clearance requirements when using the SrL-
Le for leading edge applications.
Figure 4 – Swing Falls
dETERMINE FALL CLEARANCE REqUIREd:
To determine the fall clearance required, measure the distance from the
user’s harness dorsal connection to the anchorage for the SrL-Le. Both horizontal and vertical distances are required.
Use Figures 5A through 5D and 6A through 6D, depending on user total weight, to determine the required clearance.
The dotted lines in the figures represent 1 foot (0.3 m) increments from the user’s harness dorsal connection to the
anchorage. For example, 8 ft (2.4 m) of clearance is required when the SrL-Le unit is anchored 3 1/2 ft (1 m) above and
3 1/2 ft (1 m) to the side of the user’s harness dorsal connection for users up to 310 lbs (141 kg) and 10 ft (3 m) for
users 310 lbs (141 kg) to 420 lbs (191 kg).
WARNING:
The clearances provided above assume the fall occurs from the standing position. If the worker is
kneeling or crouching an additional 3 ft (0.9 m) of clearance is needed. Failure to heed this warning may result in
serious injury or death.
WARNING:
users between 310 and 420 lbs (141-191 kg):
Users with a combined weight (person, clothing, tools,
etc.) of 310 lb to 420 lb (141-191 kg) must never anchor the Nano-Lok more than 2 ft (0.6 m) below their harness
dorsal connection. See Figure 5C and 6C. Failure to heed this warning may result in serious injury or death.
