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Per OSHA 1926.500 and 1910.66 - Anchorages used for attachment of personal fall arrest systems (PFAS) shall
be independent of any anchorage being used to support or suspend platforms and capable of supporting at least
5,000 lbs. per user attached, or be designed, installed and used as part of a complete PFAS which maintains a
safety factor of at least two and is under the supervision of a qualified person.
3.0 OPERATION AND USAGE
WARNING: Do not alter or intentionally misuse this equipment. Consult with DBI/SALA if using this equipment in
combination with components or subsystems other than those described in this manual. Some subsystems and
components combinations may interfere with the proper operation of this equipment.
WARNING: Do not use this equipment if you are unable to tolerate the impact from a fall arrest. Age and fitness can
seriously affect your ability to withstand a fall. Pregnant women and minors must not use this equipment.
3.1 BEFORE EACH USE of this equipment, carefully inspect it to assure that it is in serviceable condition. Check for
worn or damaged parts. Ensure roof anchor is secure and not
distorted. Inspect for sharp edges, burrs, cracks, or corrosion.
Inspect other fall arrest equipment in accordance with
manufacturer's instructions (Ultra-Lok® instruction manual
Form: 5902407). Refer to section 5.0 for further inspection
details. Do not use if inspection reveals an unsafe condition.
3.2 PLAN your fall arrest system before starting your work. Take
into consideration factors affecting your safety at any time
during use. The following list gives some important points you
must consider when planning your system:
A. ANCHORAGE: Select an anchorage point that is rigid and
capable of supporting the required loads. See section 2.4.
Locate roof anchor in accordance with section 3.3.
B. OTHER CONSIDERATIONS: Personal fall arrest systems
must be rigged to limit any free fall to a maximum of 6
feet (OSHA and ANSI Z359.1). Avoid working above your
anchorage level since an increased free fall distance will
result. Avoid working where your line may cross or tangle
with that of other workers or objects. 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 the SRL by connecting a
lanyard or other components without consulting DBI/SALA.
Should a fall occur, there must be sufficient clearance in
the fall area to arrest the fall before striking the ground or
other object. The total fall distance is the distance
measured from the onset of a fall to the point where the
fall is arrested. A number of factors can influence total fall
distance including; user's weight, anchorage location
relative to the fall (swing fall), body support with sliding D-
ring, etc.
D. SWING FALLS: Swing falls occur when the anchorage
point is not directly above the point where a fall occurs.
The force of striking an object while swinging (horizontal
speed of the user due to the pendulum affect) can be
great and may cause serious injury. Swing falls can be
minimized by working as directly below the anchorage
point as possible. The SRL will activate (lock-up)
regardless of it's orientation and location relative to the
user's position, however, a commonly followed guideline is
not to extend your work zone over 30° from the overhead
Figure 4 - Swing Fall