training; fall protection procedures; elim-
inating and controlling fall hazards; res-
cue procedures; incident investigations;
and evaluating program effectiveness.
2. Correct fit of a full body harness
(FBH)
is essential to proper performance. Us-
ers must be trained to select the size
and maintain the fit of their FBH.
3. Users must follow manufacturer’s in-
structions for proper fit and sizing
,
paying particular attention to ensure
that buckles are connected and aligned
correctly, leg straps and shoulder straps
are kept snug at all times, chest straps
are located in the middle chest area and
leg straps are positioned and snug to
avoid contact with the genitalia should
a fall occur.
4. FBHs which meet ANSI/ASSP Z359.11
are intended to be used with other com-
ponents of a personal fall arrest system
that limit maximum arrest forces to 1800
pounds (8kN) or less.
5. Suspension intolerance
, also called
suspension trauma or orthostatic intol-
erance, is a serious condition that can
be controlled with good harness design,
prompt rescue and post fall suspension
relief devices. A conscious user may de-
ploy a suspension relief device allowing
the user to remove tension from around
the legs, freeing blood flow, which can
delay the onset of suspension intoler-
ance. An attachment element extender
is not intended to be attached directly to
an anchorage or anchorage connector
for fall arrest. An energy absorber must
be used to limit maximum arrest forces
to 1800 pounds (8kN). The length of
the attachment element extender may
affect free fall distances and free fall
clearance calculations.
6. FBH stretch, the amount the FBH com-
ponent of a personal fall arrest system
will stretch and deform during a fall, can
contribute to the overall elongation of
the system in stopping a fall. It is im-
portant to include the increase in fall
distance created by FBH stretch, as
well as the FBH connector length, the
settling of the user’s body in the FBH
and all other contributing factors when
calculating total clearance required for a
particular fall arrest system.
The stretch
of the FBH is < 18 inches (457mm).
7. When not in use, unused lanyard legs
that are still attached to a FBH D-ring
should not be attached to a work posi-
tioning element or any other structural
element on the FBH unless deemed
acceptable by the competent person
and manufacturer of the lanyard. This is
especially important when using some
types of “Y” style lanyards, as some load
may be transmitted to the user through
the unused lanyard leg if it is not able to
release from the harness. The lanyard
parking attachment is generally located
in the sternal area to help reduce tripping
and entanglement hazards.
8. Loose ends of straps can get caught in
machinery or cause accidental disen-
gagement of an adjuster.
All FBH shall
include keepers or other components
which serve to control the loose ends
of straps.
9. Due to the nature of soft loop connec-
tions, it is recommended that soft loop
attachments only be used to connect
with other soft loops or carabiners.
13
ansI/asse Z359.11 reQUIreMents
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