
9.0 Denions
The following are general denions of fall protecon terms as dened by ANSI Z359.0-2012.
Anchorage -A secure connecng point or a terminang component of a fall protecon system or rescue system capable of safely supporng the
impact forces applied by a fall protecon system or anchorage subsystem.
Anchorage Connector - A component or subsystem that funcons as an interface between the anchorage and a fall protecon, work posioning,
rope access or rescue system for the purpose of coupling the system to the anchorage.
Arrest Distance - The total vercal distance required to arrest a fall. The arrest distance includes the deceleraon distance and acvaon distance.
Authorized Person – A person assigned by the employer to perform dues at a locaon where the person will be exposed to a fall hazard.
Available Clearance - The distance from a reference point, such as the working plaorm, to the nearest obstrucon that an authorized person might
contact during a fall which, if struck, could cause injury.
Capacity - The maximum weight that a component, system or subsystem is designed to hold.
Cercaon - The act of aesng in wring that the criteria established by these standards or some other designated standard have been met.
Cered Anchorage - An anchorage for fall arrest, posioning, restraint or rescue systems that a qualied person ceres to be capable of support-
ing the potenal fall forces that could be encountered during a fall.
Clearance - The distance from a specied reference point, such as the working plaorm or anchorage of a fall arrest system, to the lower level that a
worker might encounter during a fall.
Clearance Requirement - The distance below an authorized person that must remain clear of obstrucons in order to ensure that the authorized
person does not make contact with any objects that would cause injury in the event of a fall.
Competent Person - An individual designated by the employer to be responsible for the immediate supervision, implementaon and monitoring of
the employer’s managed fall protecon program who, through training and knowledge, is capable of idenfying, evaluang and addressing exisng
and potenal fall hazards, and who has the employer’s authority to take prompt correcve acon with regard to such hazards.
Component - An element or integral assembly of interconnected elements intended to perform one funcon in the system.
Connecng Subsystem - An assembly, including the necessary connectors, comprised of all components, subsystems, or both, between the anchor-
age or anchorage connector and the harness aachment point.
Connector - A component or element that is used to couple parts of the system together.
Deceleraon Distance - The vercal distance between the user’s fall arrest aachment at the onset of fall arrest forces during a fall, and aer the
fall arrest aachment comes to a complete stop.
Energy (Shock) Absorber - A component whose primary funcon is to dissipate energy and limit deceleraon forces which the system imposes on
the body during fall arrest.
Fall Arrest - The acon or event of stopping a free fall or the instant where the downward free fall has been stopped.
Fall Hazard - Any locaon where a person is exposed to a potenal free fall.
Free Fall -The act of falling before a fall protecon system begins to apply forces to arrest the fall.
Free Fall Distance - The vercal distance traveled during a fall, measured from the onset of a fall from a walking working surface to the point at
which the fall protecon system begins to arrest the fall.
Harness, Full Body - A body support designed to contain the torso and distribute the fall arrest forces over at least the upper thighs, pelvis, chest
and shoulders.
Horizontal Lifeline – A component of a horizontal lifeline subsystem, consisng of a exible line with connectors or other coupling means at both
ends for securing it horizontally between two anchorages or anchorage connectors.
Horizontal Lifeline Subsystem – An assembly, including the necessary connectors, comprised of a horizontal lifeline component and, oponally, of:
a) An energy absorbing component or, b) A lifeline tensioner component, or both. This subsystem is normally aached at each end to an anchorage
or anchorage connector. The end anchorages have the same elevaon.
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