

What Is Wrong With
Flexible Lifeline Style Fall Arrest Systems?
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Secondary falls are a serious
concern with so called “Safety Cables”.
A safety cable behaves similar to a rubber band under
load. A tensioned cable “bounces” a fall
victim during a fall arrest, an effect known as a “Secondary
Fall”. Secondary falls are often more damaging
to a fall victim that the initial fall arrest. 
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To minimize cable deflection and
springback during fall arrests, safety cable systems
cannot span long distances without using several intermediate
attachments.
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Safety Cables typically allow
a falling worker to drop several feet before the fall
is totally arrested, creating a much higher likelihood
that a fall arrest victim will strike an impact hazard
below. For example, “slips and trips” on
a cable system are quite likely to cause a worker to
strike his knees on the walking surface he is traversing.
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All safety cable systems, regardless
of manufacturer, have a common generic problem with
intermediate supports. Intermediate attachments must
support the cable to minimize fall arrest deflection,
however, the cable trolley must be able to pass intermediate
attachments without losing its hold on the cable.
To prevent excessive drag resistance on a walking
worker’s harness attachment, safety cable trolleys
must pass smoothly over the intermediate connections
without hanging up on the attachment brackets.
Although some cable systems are better than others,
users of even the most popular safety cable systems, complain that their cable trolleys get
temporarily hung up as they pull the trolley by the
intermediate attachments. Hang-ups cause the user’s
selfretracting lifeline to temporarily feed out additional
slack as the trolley is pulled past the resistance caused
by the intermediate attachment. If the worker is walking
too fast, the lifeline may be fooled into sensing a
fall and may activate the brake mechanism, potentially
pulling the worker over backward.This is a serious problem
with virtually all safety cable systems with intermediate
attachments, and documented falls have been caused by
this problem.
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These installers are mounting a typical
"Intermediate Attachment Bracket" on a Horizontal
Support Arm for one of our Safety Cable Systems. The
braided stainless steel wire rope is typical of those
used throughout the industry. |
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To minimize the effect of constant
stress loads on the safety cable, as well as to the
structure to which it is attached, safety cable systems
are typically installed with only 1200# of tension on
the cables. Therefore, the cable may “droop”
to some extent between connections. Shock absorbers
may be added to help minimize cable deflection, although
their use delivers minimal improvement. Lanyards, or
light-weight self-retracting life lines (SRL’s),
are used with typical safety cable systems to minimize
traversing problems. Heavier self-retracting lifeline
systems tend to hangup on the intermediate connections
while traversing the system. Furthermore, because typically
there is no brake in the cable trolley system, when
a worker falls anywhere but in the center of the span
between the overhead cable attachments, he is likely
to coast down hill toward the center of equilibrium
of the span between supporting attachments.
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Falls with safety cable systems
always introduce significant horizontal load stress
on a building structure. Most buildings are not designed
to absorb such a severe horizontal load. Unless the
system is properly engineered, your building structure
may suffer costly structural damage due to the horizontal
stresses introduced by a fall arrest with a safety cable
system.
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Regardless of the manufacturer,
all professionally engineered safety cable systems,
must be quarantined after a fall arrest, and a thorough
recertification inspection by a competent person is
required before the system may be used again.
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Falls are not covered under the
typical safety cable manufacturers’ limited one
year warranty. After a fall, virtually every professionally
engineered safety cable system, including ours, must
be taken out of service temporarily until it has been
repaired. Most safety cable system manufacturers’
repair procedures require temporary dismantling of the
system while a factory-trained professional replaces
the costly damaged parts.
The apparent major advantage
of safety cables is lower initial cost, until you do a
little research into our rigid trolley rail systems, which
address every one of these issues with a logical solution!
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Cable Systems allow longer falls,
dangerous secondary falls (bounces) which
can lead to potential injuries. |
Our Trolley Beam System arrests
falls in the shortest distance possible with no
secondary falls. Result: Eliminates injuries. |
Rigid Trolley Rail
Style Fall Protection Systems:
Our most popular line of equipment, these systems
are widely recognized as the current standard of the industry!
No other commercially available fall protection system
delivers a safer fall arrest, and no other company in
America installs as many systems as we do. Trolley Beams,
despite being universally considered the most effective
fall protection systems, were once limited to short coverage
spans. The development of patented high strength integrated
truss-based systems by Fall Protection Systems, Inc.,
has made FPS, Inc. the leading system manufacturer and
installer in the U.S.A. These systems are so unique they
are covered under US patent numbers 6,269,904B1 and D440,023S.
Here’s why they are the most popular system in America.
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Highest safety performance available
Nothing is more effective at arresting falls than our
trolley beam system. Total maximum fall distances of
less than two feet are common with our system! No secondary
falls (“no bounces during a fall arrest”)
are introduced by the system! Slips and Trips are typically
arrested before a worker can fall to his knees.
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User Friendliness
These systems eliminate trolley hangups and excessive
drag on the lifeline and trolley because there are no
intermediate connections. Our trolley rail systems are
laser leveled, guaranteeing a level, smooth running
system end to end. In dangerous weather, such as high
winds or icy conditions, we recommend that a worker
“lock” and continue holding the lifeline,drawing
it along with him while traversing a slippery vehicle,
providing him with moving overhead support to hold on
to while walking that will help maintain his balance.
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Unlimited length and future expansion
capability
Want to extend the system later? No problem. Inexpensive
extensions of any length desired can be added at any
time. There is no limit on the total length of this
system. We have several multi-user systems in the field
that exceed one thousand feet in continuous length.
How would you efficiently extend a fixed length wire
rope system? Depending on the manufacturer, many single
span safety cable systems are limited to maximum lengths
of between 120 and 150 feet.
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Sole Source Responsibility
Fall Protection Systems engineers, manufactures, and
installs most of our systems, eliminating costly middlemen
and lowering your cost. In the unlikely situation where
anything needs warranty attention, you have but one
finger to point and we will respond immediately. No
other company in the world installs as many systems
as we do, and our experienced award-winning installation
service is exceptional.
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Durability and Reliability
Without question, Fall Protection Systems manufactures
the most durable system in the industry. In fact, nothing
else compares. None of our thousands of systems in the
field has every needed repairs after a fall arrest!
That means unnecessary downtime is eliminated for our
customers, and eliminates the high expense that all
safety cable customers are required to spend as required
by OSHA regulations to recertify a system after a fall
arrest. Our trolley beam systems are so durable, recertification
is not necessary after a fall arrest!
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Recertification After A Fall
Our trolley beam systems are so durable, recertification
is not required after a fall arrest! Fall Protection
Systems will ask you to visually look over your system,
however, no system has ever required rework in our many
years of experience. Note: The self-retracting lifeline
may require recertification if the red fall indicator
has appeared. Consult User Instruction Manual.
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Five-Year Unlimited Warranty
Our
five year “no strings attached” full warranty
is simply the best in the industry! (Refer to warranty.)
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Low Cost/Affordability
We proudly lead the fall protection industry in America
with our exceptionally high quality products and service,
user-friendly performance, and reliability...yet the
cost is surprisingly low. We manufacture and install
more fall protection systems each year than any other
company in America. You may be quite pleasantly surprised
to learn how, despite the obvious unparalleled value,
our trolley beam systems are typically priced about
the same as comparable safety cable systems.
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Delivery, Terms and Conditions
From the time you place your order, we coordinate the
installation with your people. Our Field Installation
Superintendent will work with you to obtain permits
and variations if necessary to clear the installation
through proper channels. Once approval is attained,
we typically install our systems within six to eight
weeks after order placement.
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Free User Training and Certification
Free User Training and Certification are included with
your system. We provide an instructional video tape
for annual recertification for your workers as required
by OSHA regulations. We also provide convenient pocket-sized
training manuals, and OSHA-required instructional training
logs to record training dates. Each of your workers
will also receive personal wallet sized “authorized
user certification” cards. This package eliminates
all concerns regarding OSHA compliance.
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