2.3 SRD Fall Arrest Orientation and Anchorage Range:
The SRD is used as either a single leg or a twin leg unit, within the acceptable anchorage
range. See paragraph 2.3.1
The single leg configuration may be oriented in either of two ways;
•
the SRD worn on the user’s back, attached to the FBH dorsal D-ring with an approved connector, and the 5000 lbs. leg end connector
attached to a suitable anchorage structure, as shown in Figure 2A.
•
with the SRD attached to an anchorage structure via an approved connector and the 5000lbs. leg end connector attached to the dorsal D-
ring on the FBH as shown in Figure 2B.
•
The twin leg configuration is attached to the webbing of the FBH with the provided triple-locking carabiner, which is equipped with an
alignment clip. The SRD leg end connector supplied with the unit at shipping is a ANSI Z359.12 compliant carabiner, and may be connected
directly to an anchorage structure, as shown in 2C.
2.3.1 Anchorage Range:
The acceptable anchorage range is from overhead (level with the user's FBH dorsal D-ring or higher) to non-overhead
(below the user's FBH dorsal D-ring) up to a maximum of 5' below the FBH D-ring, as shown by the shaded area in Figures 2A – C.
WARNING
Anchor points located low in the acceptable anchorage range will require additional clear fall distance. Always consider where the anchor point
is located and ensure there is adequate clear fall distance to avoid striking an obstruction or the ground.
2.4 Rescue:
Rescue operations require specialized equipment that is beyond the scope of this manual. Users are required to have a written rescue
plan in place, and a method to implement it in a timely manner.
2.5 Application Limits:
Take action to avoid moving machinery and thermal, electrical and chemical hazards as contact may cause serious injury or
death. Avoid swing falls. Follow the weight restrictions and recommendations in this manual. Be advised, the SRD discussed in this manual is NOT
rated for Leading Edge applications. The lifeline is vulnerable to damage by sharp edges and abrasive surfaces and it is very important to avoid
these hazards as a damaged lifeline may cause serious injury or death.
Do not attach to an anchorage more than 5' below the user's FBH dorsal D-ring.
DO NOT
use the SRD to lift tools, materials, or personnel.
Remove from service any equipment subjected to fall arrest forces.
3. SYSTEM REQUIREMENTS
3.1 Capacity:
The SRD discussed in this manual is rated for a maximum total combined (clothing, tools, etc.) user weight of 425 lbs. Heavyweight
users are cautioned. A user weighing 425 lbs. will experience very high fall arrest forces during a fall event. After a fall event, suspension trauma
may rapidly develop. Users are advised to deploy suspension trauma relief equipment as soon as possible after a fall event.
To maintain ANSI Z359.14 compliance, limit user weight to between 130 lbs. to 310 lbs. (58.9-140.6 kg), including clothing, tools, etc.
3.2 Compatibility of Connectors:
Connectors are considered to be compatible with connecting elements when they have been designed to work
together in such a way that their sizes and shapes do not cause their gate mechanisms to inadvertently open regardless of how they become
oriented. Contact FallTech if you have any questions about compatibility. Connectors must be compatible with the anchorage or other system
components. Do not use equipment that is not compatible. Non-compatible connectors may unintentionally disengage. Connectors must be
compatible in size, shape, and strength. Self-closing, self-locking snap hooks and carabiners are specified by OSHA and ANSI Z359.12. FallTech offers
a wide variety of connectors for use with the 9' SRD. See Table 1-B and Table 1-C.
3.3 Compatibility of Components:
Equipment is designed for use with approved components and subsystems only. Substitutions or replacements
made with non-ANSI Z359 compliant components or subsystems may jeopardize compatibility of equipment and may affect the safety and
reliability of the complete system. Ensure compatibility between the connectors if non-FallTech components are used for fall protection.
3.4 Making Connections:
Only use self-locking snap hooks, rebar hooks, and carabiners with this equipment. Only use connectors that are suitable
to each application. Ensure all connections are compatible in size, shape and strength. Do not use equipment that is not compatible. Visually
ensure all connectors close and lock completely. Connectors (snap hooks, rebar hooks, and carabiners) are designed for use only as specified in this
manual. See Figure 13 in Appendix B.
3.5 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., a SAL, an SRD, or a Fall Arrester Connecting
Subsystem (FACSS) attached to the dorsal D-ring of the FBH. PFAS components used with this equipment must meet applicable ANSI Z359
requirements and OSHA regulations. OSHA requires a personal fall arrest system be able to arrest the worker’s fall with a maximum arresting force
of 1,800 lbs., and limit the free fall to
6.5 feet or less. If the maximum free fall distance must be exceeded, the employer must document, based on test data, that the maximum arresting
force will not be exceeded, and the personal fall arrest system will function properly.
3.5.1 Average Arrest Force and Arrest Distance, Anchor Above the D-ring:
The SRD discussed in this manual has been dynamically tested to
ascertain typical, average, and worst case performance attributes when a 310 lb worker, and a 425 lbs worker, is attached in a zero free fall
condition, i.e., an anchorage at the top of the allowable range. Table 1D provides typical fall arrest attributes, and a list of ANSI performance
attributes for comparison. The maximum allowable free fall for an anchorage attachment above the FBH D-ring is 5'.
•
Longest Arrest Distance:
310 lbs = 52.6"; 425 lbs = 63.5"
•
Average Arrest Force: 310 lbs = 841 lbs; 425 lbs = 984 lbs.
•
Largest Maximum Arrest Force: 310 lbs = 1112 lbs; 425 lbs = 1555 lbs.
3.5.2 Average Arrest Force and Arrest Distance, Anchor Below the D-ring:
The SRD discussed in this manual has also been dynamically tested to
ascertain allowable free fall, typical, average, and worst case performance attributes when a 310 lb worker, or a 425 lb worker, is attached in a free
fall condition, i.e., at the 5' maximum distance allowed below the FBH D-ring. Maximum free fall for an anchorage attachment below the FBH D-
ring is also 5'.
•
Longest Arrest Distance = 310 lbs = 136"; 425 lbs = 163"
•
Average Arrest Force: 310 lbs = 970 lbs; 425 lbs = 997lbs.
•
Maximum Average Arrest Force: 310 lbs = 1566 lbs; 425 lbs = 1722 lbs.
3
Summary of Contents for DuraTech Max Web Single
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