Of the three primary fall-protection systems the Occupational
Safety and Health Administration's (OSHA's) construction
regulations specify for workers, personal fall-arrest (PFA) systems
can be one of the more complex to use correctly.
A PFA system usually is composed of a body harness, rope-grab
lanyard attached to the D-ring on the back of the harness, lifeline
to which the rope-grab attaches and anchor to which the lifeline
attaches with a snap hook.
Arresting forces applied to the human body when stopping a fall
can be substantial. According to OSHA rules, the arresting force
must be limited to 900 pounds when a body belt is used and 1,800
pounds when a...
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