2.0 Description
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Arrest Distance (AD)
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Average Arrest Force (AAF)
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Maximum Arrest Force (MAF)
Figure 1 - About
FallTech® 3-Way Retrieval SRL-Rs
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2
4
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5
6
1
Anchorage Connecting Element
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Collapsible Handle
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Retrieval Hand Crank
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Mode Switching Plunger
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Spring Bumper
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Load-Indicating Swivel Snaphook
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MCS03 Rev B
050120
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2.1 American National Standards Institute (ANSI) and Occupational Safety and Health Administration (OSHA):
The SRL-R discussed in
this manual meets the standards of ANSI Z359.14-2014, ANSI A10.32-2012, and Occupational Safety and Health Administration (OSHA)
regulations 1926.502. ANSI requires SRDs be classified according to their tested overhead dynamic performance, and are classified either
Class A or Class B, based on those test results. Dynamic performance means that the SRD is installed in a testing drop tower. A test weight
is attached to the SRD and then dropped. Test results are recorded.
Parameters recorded are:
The Arrest Distance is the total vertical distance required to arrest a fall. The Arrest Distance includes the deceleration distance and the
activation distance. The Average Arrest Force is the average of the forces applied to the body and the anchorage by the fall protection
system. The Maximum Arrest Force is the maximum amount of force that may be applied to the body and the anchorage by the fall
protection system. In addition to the above tests conducted in ambient conditions, the units must be retested for average and peak forces
under certain environmental conditions, where the units are cooled, then tested, heated, then tested, and saturated in water and tested
again. Separate units may be used for each test. All test results are recorded.
This test data is then used to establish the basis for fall clearance guidelines published in the user instruction manual.
SRD Class A and B:
To be declared a Class A device, ANSI requires an SRD to have an Arrest Distance of less than 24”, an Average Arrest
Force of less than 1,350 lbs, (1,575 lbs conditioned) and a Maximum Arresting Force of 1,800 lbs, for both ambient and conditioned
testing. To be declared a Class B device, the SRD must have an Arrest Distance of less than 54”, an Average Arrest Force of less
than 900 lbs, (1,125 lbs conditioned) and a Maximum Arresting Force of 1,800 lbs, for both ambient and conditioned testing.
When dynamically tested in accordance with requirements of ANSI Z359.14-2014, FallTech Class A Self-Retracting Devices have an AAF of
1,350 lbs and an AD of less than 24”.
When dynamically tested in accordance with requirements of ANSI Z359.14-2014, FallTech Class B Self-Retracting Devices standard have
an AAF of 900 lbs and an AD of less than 54”.
The arrest distances described by Class A and Class B apply to overhead anchorage applications only. For non-overhead anchorage
applications, please see Section 5 of this user instruction manual for how to calculate your Minimum Required Fall Clearance (MRFC).
Classification information found on product labels is based on test results. Table 1B provides test performance results for the SRD
discussed in this manual. NOTE: Arrest distance is one of several parts of the Minimum Required Fall Clearance (MRFC). MRFC is discussed
in detail in Section 5 .
The FallTech® DuraTech 45’/60’ 3-Way Retrieval SRL-R is a self-retracting lifeline with integral rescue capability. The DuraTech SRL-Rs
described in this manual has an integral hand crank to raise or lower a fallen victim to a safe level. The DuraTech SRL-Rs can be
attached to an overhead anchorage or attached to a FallTech® Tripod or Davit systems with the included mounting bracket.