3
1.0 APPLICATION
1.1 PURPOSE:
The DBI-SALA ExoFit NEX™
™
Full Body Harness (Figure 1 and Figure 2) should be used as a component
in personal fall arrest, restraint, work positioning, climbing, controlled descent, or rescue systems (see
Table 1).
ExoFit NEX™ Harnesses included in this manual are full body harnesses and meet ANSI Z359.1, OSHA, and
CSA Z259.10 requirements. See Figure 3 for application illustrations.
WARNING:
Working at height has inherent risks. Some risks are noted here but are not limited to:
falling, suspension/prolonged suspension, striking objects, and unconsciousness. In the event of a fall
arrest and/or subsequent rescue (emergency) situation, some personal medical conditions may affect your
safety. Medical conditions identi
fi
ed as risky for this type of activity include, but are not limited to: heart
disease, high blood pressure, vertigo, epilepsy, drug or alcohol dependence, psychiatric illness, impaired
limb function and balance issues. We recommend that your employer/physician determine if you are
fi
t to
handle normal and emergency use of this equipment.
Table 1 - ExoFit NEX™ Full Body Harness Applications
Application
CSA Class
Description
Personal Fall Arrest
Class A
The full body harness is used as a component of a personal fall arrest system.
Personal fall arrest systems typically include a full body harness and a connecting
subsystem (energy absorbing lanyard). Maximum arresting force must not exceed
1,800 lbs (8 kN). For fall arrest applications connect the fall arrest subsystem
(example: lanyard, SRL, energy absorber, etc.) to the D-ring or attachment element
on your back, between your shoulder blades.
Controlled Descent
Class D
For controlled descent applications, harnesses equipped with a single sternal level
D-ring, one or two frontal mounted D-rings, or a pair of connectors originating
below the waist (such as a seat sling) may be used for connection to a descender or
evacuation system (reference in Z259.10 in Canada).
Rescue
Class E
The full body harness is used as a component of a rescue system. Rescue systems
are con
fi
gured depending on the type of rescue. For limited access (con
fi
ned space)
applications, harnesses equipped with D-rings on the shoulders may be used for
entry and egress into con
fi
ned spaces where worker pro
fi
le is an issue.
Ladder Climbing
Class L
The full body harness is used as a component of a climbing system to prevent
the user from falling when climbing a ladder or other climbing structure. Climbing
systems typically include a full body harness, vertical cable or rail attached to the
structure, and climbing sleeve. For ladder climbing applications, harnesses equipped
with a frontal D-ring in the sternal location may be used for fall arrest on
fi
xed
ladder climbing systems. These are de
fi
ned in CSA Z259.2.1 in Canada and ANSI
A14.3 in the United States.
Work Positioning
Class P
The full body harness is used as a component of a work positioning system to
support the user at a work position. Work positioning systems typically include a full
body harness, positioning lanyard, and a back-up personal fall arrest system. For
work positioning applications, connect the work positioning subsystem (example:
lanyard, Y-lanyard, etc.) to the lower (hip level) side or belt mounted work
positioning attachment anchorage elements (D-rings). Never use these connection
points for fall arrest.
Restraint
None
The full body harness is used as a component of a restraint system to prevent the
user from reaching a fall hazard. Restraint systems typically include a full body
harness and a lanyard or restraint line.
1.2 STANDARDS:
Refer to local, state, and federal (OSHA) requirements governing occupational safety for
additional information regarding Personal Fall Arrest Systems. Refer to the following national standards on fall
protection:
ANSI
Z359.0
De
fi
nitions and Nomenclature Used for Fall Protection and Fall Arrest
ANSI
Z359.1
Safety Requirements for Personal Fall Arrest Systems, Subsystems, and Components
ANSI
Z359.2
Minimum Requirements for a Comprehensive Managed Fall Protection Program
ANSI
Z359.3
Safety Requirements for Positioning and Travel Restraint Systems
ANSI
Z359.4
Safety Requirements for Assisted-Rescue and Self-Rescue Systems, Subsystems, and Components
ANSI
A10.32
Fall Protection Systems for Construction and Demolitions
CSA
Z259.10
Full Body Harnesses
ASTM F887-2011 Standard Speci
fi
cations for Personal Climbing Equipment
