Falltech 11 FT-X Web Class 1 SRL-P Manuel D'instructions page 11

5.4.4 Using the SRD:
Do not use the SRD if inspection shows damage or any malfunction. Don the FBH in accordance
with the FBH manufacturer's instructions. Follow the instructions contained in this manual and on
the labels. Failure to follow instructions may result in serious injury or death. Connect the SRL-FBH
Connector to the dorsal D-ring on the FBH. Ensure the connector closes and locks. Attach the leg-end
carabiner to the chosen anchorage and ensure the leg-end connector closes and locks. Ensure all
connections are compatible. Normal operation will allow the working length of the lifeline to extend
and retract as the worker moves about. A certain amount of tension must remain on the web at all
times to ensure proper operation of the internal brake. Do not allow the lifeline to become slack.
If the lifeline becomes slack, remove the SRD from service for inspection. See Section 7.
Avoid sudden or quick movements during the normal work operation, as this may cause the SRD brake
to engage and possibly cause loss of balance and injury or death.
If a fall occurs, the brake will engage and lock the lifeline. The EA will deploy to arrest the fall and limit
arrest forces on the user.
•
DO NOT extend the lifeline past the operational limit.
•
DO NOT allow one SRD lifeline to become tangled or twisted with another SRD lifeline during use.
•
DO NOT allow any lifeline to pass under arms or between legs during use.
•
DO NOT clamp, knot, or prevent the lifeline from retracting or being taut.
•
DO NOT lengthen the SRD by connecting a lifeline or similar component.
•
DO NOT allow the lifeline to remain outside the housing when not in use.
5.5 Calculating Minimum Required Fall Clearance
5.5.1 FT-X Web in Overhead, Non-Leading Edge Anchorage Application
[130 to 310 lbs. (59 to 141 kg) user]
The FT-X may be used may be used as a standard SRD in an overhead condition, in which the SRD is
installed anywhere in the allowable attachment area, which ranges from directly above the user to
level with the FBH D-ring, as shown in Figure 5.
The overhead condition minimum required fall clearance (MRFC) is calculated using four metrics,
measured from the walking-working surface: SRD Deceleration Distance, D-Ring Shift and Harness
Stretch [1 ft (0.3m)], Safety Factor [1.5 ft (0.5m)], and Swing Fall. The diagram in Figure 6 is calculated
using the performance data of the SRD and includes all four metrics listed previously to determine the
MRFC.
5.5.2 FT-X Web with a Non-Overhead, Non-Leading Edge Anchorage Application [130 to 310 lbs.
(59 to 141 kg) user]
The non-leading edge below D-ring condition minimum required fall clearance (MRFC) is calculated
using five metrics, measured from the walking-working surface: SRD Deceleration Distance, D-Ring
Shift and Harness Stretch [1 ft (0.3m)], Safety Factor [1.5 ft (0.5m)], Dorsal D-ring Height [5 ft (1.5m)],
and Swing Fall. Dorsal D-ring height is added to account for the below D-ring tie-off compared to the
overhead condition. The diagram in Figure 6 is calculated using the performance data of the SRD and
includes all five metrics listed previously to determine the MRFC. Below D-ring tie-off is outside the
scope of ANSI Z359 and is only allowed when no edge hazards are present. At no point during a fall
shall the lifeline be loaded over any edge.
11
Figure 5 - MRFC Overhead Anchorage
X-SRD Anchorage Height
.5
Y- Lateral
28.0
Above Dorsal D-ring
Z- Minimum Required
Fall Clearance From
Working Surface