Theatre Design & Technology - Winter 1996 - 20

FALL PROTECTION SYSTEMS

1

OSHA recognizes three basic approaches to fall protection:
A guard rail system surrounding tbe walking!
working slllface. As a temporary solution to a fall
hazard, guardrails are perhaps the best solution
since the worker does not need to wear protective
gear (Like a harness), be attached to anything (Like
a lifeline) or be trained in special procedures. He
or she can work normally while being passively protected by the railings from falling to a lower level.
Just any railing won't do, however. OSHA has specific requirement for the height, strength and construction of temporary guardrails and working!
walking slllfaces. (See 29CFR 1926. 502(b) Guard
Rail Systems.)

2 A safety net s)lstem instal/ed below to catcb afal/ing worker. Safety nets are most often used in construction and repair work on buildings and bridges
and are almost never used in Live entertainment
work.

3Apersonalfal/ arrest s)lstem to protect tbe worker
in lieu ofone ofthe above methods. OSHA defines
a personal fall arrest system as "... a system used to
arrest an employee in a fall from a working level. It
consists of an anchorage, connectors, a body belt or
body harness and may include a lanyard, deceleration device, lifeline, or suitable combination of
these." (AppendLx Cto 29CFR 1910.66 I (b».
Personal Fall Arrest Systems, according to
OSHA, must meet the following conditions:
1. be continuous
2. be exclusive
3. reduce tbe arrest forces COIllll/lll/icated to tbe
fal/en worker to safe levels
4. limit tbe freejal/ distance before tbe arrest
5. be cOli/posed ofcomponents ofsafe design
6. be engineered as a total system
7. incOlporate rescue after tbe fal/ is arrested
8. incOlporate formal training in s)'stem use.

Lets take on each of these aspects one at a
time:

Continuous: A worker must be protected
from fall injuries at all times when exposed to fall
hazards. Continuous and uninterrupted attachment
to the fall arrest system is required whenever a
worker is aloft and exposed to the possibility of falling more th;m 6 feet. At no time, while exposed to a
18

WINTER

I

9

9

6

TD&T

fall hazard, may the worker detach him/herself
from the system. The common practice among riggers of moving around aloft unprotected and then
l)ing-in only when a work position is reached is not
permitted. Neither maya worker exposed to a fall
hazard temporarily disconnect from one anchorage
in order to attach to another.
E.\'clusive: Afall protection system must only
be used to catch a falling lrorker. This means that
lanyards, lifelines, hardware, or anchorages which
are used as part of the fall arrest system may not be
put to any other use. You can't use a system lifeline
or lanyard to support your weight when you are
working nor can you use any of the components of
the system for doing anything but arresting the fall
of a worker. Harnesses which are designed to do so
may be used for both work positioning and fall protection, but all equipment for work positioning
(rappelling, for instance) must be completely separate from the fall arrest system with separate anchorages above and separate attachment points to
the harness.
Reductioll of Arrest Forces: To protect
falling workers from injul)' when their fall is aJ~
rested, OSHA sets specific maximum Limits for how
much of the arrest force can be communicated to
falling lrorkers through their body support harness
or belt. (For systems using full-body harnesses, the
Maximum Arresting Force (MAF) is 1800 lbs. For
systems employing body belts, the MAF is 900 Ibs.)
Since fall forces generated by a falling worker can
quickly exceed these levels after only a few feet of
free-fall, methods of dissipating a substantial
aJllount of the energy generated by the falling
worker needs to be carefully engineered into the
system.
Limit Free-Fall Distance: The maximum
distance that the falling worker is allOlred 10 fall before the fall aJTest system begins 10 arrest his fall is
6 feet. The fallillg worker must also be prevented
from hitting any lower surface.
Components of Safe Design: OSI-IA specifies generally that "all personal protective equipment shall be of safe design." (29CFR
191O.132(c»
In addition, specific minimal
strength, testing. aJldJor performaJlce criteria for
anchorages, harnesses, laJlyaJ'ds, conneClOrs. lifeLines, and shock absorbers are Listed in mrious
places in 2PCFR 1910 and 1926. Parts must meet
these rigorous criteria, or Ihey CaJll10t be used.
Most of the rescue/rock climbing equipment commonly useet by riggers is not legal for fall protection
use because it does not meet specific OSHA testing



Table of Contents for the Digital Edition of Theatre Design & Technology - Winter 1996

Contents
Theatre Design & Technology - Winter 1996 - 1
Theatre Design & Technology - Winter 1996 - 2
Theatre Design & Technology - Winter 1996 - 3
Theatre Design & Technology - Winter 1996 - Contents
Theatre Design & Technology - Winter 1996 - 5
Theatre Design & Technology - Winter 1996 - 6
Theatre Design & Technology - Winter 1996 - 7
Theatre Design & Technology - Winter 1996 - 8
Theatre Design & Technology - Winter 1996 - 9
Theatre Design & Technology - Winter 1996 - 10
Theatre Design & Technology - Winter 1996 - 11
Theatre Design & Technology - Winter 1996 - 12
Theatre Design & Technology - Winter 1996 - 13
Theatre Design & Technology - Winter 1996 - 14
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Theatre Design & Technology - Winter 1996 - 17
Theatre Design & Technology - Winter 1996 - 18
Theatre Design & Technology - Winter 1996 - 19
Theatre Design & Technology - Winter 1996 - 20
Theatre Design & Technology - Winter 1996 - 21
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https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1973May
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https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1972Dec
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https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1968May
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1968Feb
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1967Dec
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1967Oct
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1967May
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1967Feb
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1966Dec
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1966Oct
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1966May
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1966Feb
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1965Dec
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1965Oct
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1965May
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