2.0 System Requirements
Compatibility of Components and Subsystems
This equipment is designed for use with Miller DuraHoist approved components and subsystems. Substitutions
or replacements made with non-approved components or subsystems may be incompatible, and may jeopardize
the safety and reliability of the complete system.
Compatibility of Connectors
Connectors (hooks, carabiners, and D-rings) must support at least 5000lbs. Connectors must be compatible in
size, shape, and strength. Non-compatible connectors may unintentionally disengage (roll-out). Do not use
non-locking connectors with this equipment.
Structural Strength
The structure or mounting surface to which this equipment is installed must meet the strengths specifi ed below
for the application selected:
Fall Arrest: The structure selected for personal fall arrest applications must be capable of sustaining static
loads applied in the directions permitted by the personal fall arrest system of at least 3600lbs, with certifi cation of
a qualifi ed person or 5000lbs, without certifi cation. See ANSI Z359.1 for certifi cation defi nition. When more than
one personal fall arrest system is attached to a structure, the strengths stated above must be met at each
location independently.
From OSHA 1926.500 and 1910.66: Anchorages used for attachment of personal fall arrest systems shall be
independent of any anchorage being used to support or suspend platforms, and capable of supporting at least
5000lbs per user attached, or being designed, installed, and use as part of a complete personal fall arrest system
which maintains a safety factor of at least two, and is under the supervision of a qualifi ed person.
Work Positioning: The structure to which the work positioning system is attached must sustain static loads
applied in the directions permitted by the work positioning system of at least 3000lbs, or twice the potential impact
load, whichever is greater. See OSHA 1926.502. When more than one work positioning system is attached to an
anchorage, the strengths stated above must be multiplied by the number of work positioning systems attached to
the anchorage.
Personal Riding: The structure selected for personnel riding applications must be capable of sustaining static
loads applied in the directions permitted by the personnel riding system of at least 2500lbs. Each mast and base
installation must be independently capable of sustaining this load.
Material Handling: The structure selected for material handling applications must be capable of sustaining
static loads applied in the directions permitted by the material handling system of at least 2500lbs. Each mast
and base installation must be independently capable of sustaining this load.
Rescue: The structure selected for rescue applications must be capable of sustaining static loads applied in the
directions permitted by the rescue system of at least 2500lbs. Each mast and base installation must be
independently capable of sustaining this load.
WARNING
Masts and mounting bases that are installed for personnel riding, material handling, or
rescue applications only, must be labeled as such to prevent the system from being used for
fall arrest or work positioning applications, which require greater structural strength.
USE R I NS TR UC TIO N S - E N G LIS H
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