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6 Annex - ANSI/ASSP Z359.11-2021
American National Standard
6
Annex - ANSI/ASSP Z359.11-2021 American National Standard
NOTE: The manufacturer of this equipment may impose more stringent restrictions on the use of the products they
manufacture; see the manufacturer's instructions.
1. It is essential that the users of this type of equipment receive proper training and instruction including detailed
procedures for the safe use of such equipment in their work application. ANSI/ASSP Z359.2, Minimum Requirements
for a Comprehensive Managed Fall Protection Program, establishes guidelines and requirements for an employer's
managed fall protection program including policies, duties and training; fall protection procedures; eliminating and
controlling fall hazards; rescue procedures; incident investigations; and evaluating program effectiveness.
2. Correct fit of a full body harness (FBH) is essential to proper performance. Users must be trained to select the size and
maintain the fit of their FBH.
3. Users must follow manufacturer's instructions 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 components 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 intolerance, is a serious condition that can be
controlled with good harness design, prompt rescue and post fall suspension relief devices. A conscious user may
deploy a suspension relief device allowing the user to remove tension from around the legs, freeing blood flow, which
can delay the onset of suspension intolerance. 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 component 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 important 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.
7. When not in use, unused lanyard legs that are still attached to a FBH D-ring should not be attached to a work positioning
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 disengagement 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 connections, it is recommended that soft loop attachments only be used to connect with
other soft loops or carabiners. Snaphooks should not be used unless approved for the application by the manufacturer.
Section 10 - 16 provide additional information concerning the location and use of various attachments that may be
provided on this FBH.
10. Dorsal – the dorsal attachment element shall be used as the primary fall arrest attachment, unless the application
allows the use of an alternate attachment. The dorsal attachment may also be used for travel restraint or rescue. When
supported by the dorsal attachment during a fall, the design of the FBH shall direct load through the shoulder straps
supporting the user and around the thighs. Supporting the user, post fall, by the dorsal attachment will result in an upright
body position with a slight lean to the front with some slight pressure to the lower chest. Considerations should be made
when choosing a sliding versus fixed dorsal attachment element. Sliding dorsal attachments are generally easier to
adjust to different user sizes, and allow a more vertical rest position post fall, but can increase FBH stretch.
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