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Anchor:  A secure point of attachment for lifelines, lanyards or deceleration devices, and which is independent of the means of supporting or suspending the employee.

Anchor Connector:  A device which is used to couple (connect) parts of the system together. It may be an independent component of the system (such as a carabiner), or an integral component of part of the system (such as a buckle or dee-ring sewn into a body belt or body harness, or a snap-hook spliced or sewn to a lanyard or self-retracting lanyard).

ANSIWebsite for the American National Standards Institute, or ANSI.

ASSE: The American Society of Safety Engineers, or ASSE.

Body Harness: design of straps which may be secured about the employee in a manner to distribute the fall arrest forces over at least the thighs, pelvis. waist, chest and shoulders with means for attaching it,to other components of a personal fall arrest system. Also referred to as a Full Body Harness.

Construction OSHA Fall Protection: This is the governmental OSHA website which contains information on fall protections standards directly related towards the construction industry.

Competent Person: A person who is capable of identifying hazardous or dangerous conditions in the personal fall arrest system or any component thereof, as well as in their application and use with related equipment.

Deceleration Device: Any mechanism, such as a rope grab, ripstitch lanyard, specially woven lanyard, tearing or deforming lanyard, or automatic self retracting-lifeline/lanyard, which serves to dissipate a substantial amount of energy during a fall arrest, or otherwise limits the energy imposed on an employee during fall arrest.

Free Fall Distance: The vertical displacement of the fall arrest attachment point on the employee's body belt or body harness between onset of the fall and just before the system begins to apply force to arrest the fall. This distance excludes deceleration distance, lifeline and lanyard elongation but include any deceleration device slide distance or self-retracting lifeline/lanyard extension before they operate and fall arrest forces occur.

Free Fall: The act of falling before the personal fall arrest system begins to apply force to arrest the fall.

Lanyard: A flexible line of rope, wire rope, or strap which is used to secure the body belt or body harness to a deceleration device, lifeline, or anchorage.
Lifeline: A component consisting of a flexible line for connection to an anchorage at one end to hang vertically (vertical lifeline), or for connection to anchorages at both ends to stretch horizontally (horizontal lifeline), and which serves as a means for connecting other components of a personal fall arrest system to the anchorage.
National Safety Council: The National Safety Council offers information on a variety of safety topics; they also hold a yearly safety conference and expo.
OSHA - Fall Protection: This is the governmental OSHA website, which contains information about fall protection standards, requirements, and specifications for various situations and industries.

Personal Fall Protection System: A system used to arrest an employee in a fall from a working level. It consists of an anchorage, connectors, a body belt or body harness and may include a lanyard, deceleration device, lifeline, or suitable combinations of these.

Self-Retracting Lifeline (SRL): A deceleration device which contains a drum wound line which may be slowly extracted from, or retracted onto, the drum under slight tension during normal employee movement, and which, after onset of a fall, automatically locks the drum and arrests the fall.
Wisconsin Safety Council: Hy-Safe Technology’s home state safety council.

*terms gathered from OSHA 1910.66 Appendix C