The fall protection industry is full of complex terminology that can be perplexing. The Rigid Lifelines® glossary provides definitions to a variety of fall protection industry and Rigid Lifelines fall protection Anchor Track™ Systems terminology.

Anchor Track™
Anchor Track is what we call our enclosed, rigid track. Anchor Track comes in a variety of sizes, profiles, and material to accommodate the requirements of almost any application.

Anchor Trolley™
The Anchor Trolley is our patented trolley that virtually eliminates post-fall drift on the track. The Anchor Trolley greatly increases the opportunity for conscious and able-bodied workers to perform a self-rescue after a fall event. When any force greater than 80 pounds, including the weight of the self-retracting lanyard, is applied to the Anchor Trolley, a braking mechanism engages the steel track in the event of a fall, which causes the trolley to anchor into place without damaging the track.

ANSI
An acronym that stands for the American National Standards Institute, ANSI was founded in 1918 and oversees the implementation of thousands of directives for the U.S. marketplace. ANSI issues the nationally recognized Fall Protection Code ANSI Z359, which is written by the ASSE Z359 Fall Protection Code Committee. ANSI standards can be cited under OSHA’s General Duty Clause.

Arm Reach
Arm reach is the distance between the face of the column and the centerline of the properly secured track.

Arresting Force
The force that slows a falling worker to a complete stop, arresting force is usually provided by an energy absorber, such as a "rip stitch" lanyard or self-retracting lanyard (SRL).

Caster-Frame Width
Commonly referred to as tread width in material handling, caster-frame width is the distance from the end of a caster mounting plate to the end of the other caster mounting plate on the same lower brace tube. Caster-frame width is a dimension needed for quoting our Rolling A-Frame Anchor Track™ System.

Ceiling-Mounted Monorail
A horizontal fall arrest system that installs to existing ceiling support structures, a ceiling-mounted monorail uses a free-rolling trolley inside of enclosed rigid track.

Drift
Undesired trolley movement along the track or cable of a horizontal fall arrest system, drift is caused by force generated during a fall event on a horizontal fall arrest system.

Enclosed Track
A rigid rail fall protection system that has been manufactured by rolling metal through sequential dyes to form an enclosed shape, enclosed track keeps the trolley traveling within a defined path, which protects the trolley from environmental factors.

Energy-Absorbing Lanyard
A type of safety lanyard that absorbs energy by “ripping” stitched webbing, an energy-absorbing lanyard has stitching designed to “rip” at various pounds of force.

Fall Arrest
Fall arrest is a fall protection component, device, or system that decelerates a worker to a complete stop after a fall event.

Fall Arrester
Fall arrester is a slang term used to describe a fall arrest component, device, or system.

Fall Arrest Harness
A fall arrest harness is designed to contain the torso and distribute the forces of a fall event over the upper thighs, pelvis, chest, and shoulders.

Fall Arrest System
An active fall protection system that arrests a person’s fall after a fall event, a fall arrest system also prevents impact at a lower level.

Fall Protection
A general term that covers all methods of protecting workers after a fall event from height, fall protection eliminates or controls potential injury and can be passive (guardrails) or active (fall arrest).

Fall Protection Harness
An umbrella term used to describe personal protection equipment designed for use as part of a fall arrest, fall restraint, or work positioning system, fall protection harnesses come in various styles that are often distinguished by the location of the harness connector (like a dorsal D-ring).

Fall Protection System
A fall protection system is a general term that covers all methods of protecting workers from a fall event at height.

Fall Restraint
Fall restraint is a type of fall protection that is designed with specific-length lanyards to prevent a worker’s center of gravity from reaching a fall hazard at height.

Fall Restraint System
A fall restraint system is an active fall protection system that uses specific-length lanyards to prevent a worker’s center of gravity from reaching a fall hazard at height.

Fold-Away Fall Protection Anchor Track™ System
A horizontal fall arrest system that consists of two or more swing arms supporting enclosed rigid track with a free-rolling trolley, a fold-away system can be mounted to wall columns or freestanding columns and can fold out of the way when not in use.

Freestanding Monorail
A general term used to describe a horizontal fall arrest system consisting of multiple freestanding columns and headers from which the track hangs, a freestanding monorail system uses enclosed rigid track with a free-rolling trolley.

Griffin™ Fall Protection Anchor Track™ System
A Griffin system is a horizontal fall arrest system that consists of a skidded or wheeled counterweighted base supporting columns, braces, and outrigger arms that hold the track. The system provides mobile fall protection that uses enclosed rigid track with a free-rolling trolley.

Horizontal Lifeline
A horizontal lifeline is a generic term used to describe various types of horizontal fall protection systems.

Industrial Fall Protection
Industrial fall protection is a general term used to describe approaches to protecting workers from a fall event at height in the industrial workplace.

Inside Clear Width
Commonly referred to as clear span in material handling, inside clear width is the distance from the inside of one support leg to the inside of the other support leg. Inside clear width is a dimension needed for quoting our Rolling A-Frame Anchor Track™ System.

Inverted-L Fall Protection Anchor Track™ System
A horizontal fall arrest system that consists of wide flange steel columns with gusset reinforcements holding headers that the track attaches to, an inverted-L system provides permanent fall protection that uses enclosed rigid track with a free-rolling trolley.

Inverted-U Fall Protection Anchor Track™ System
A horizontal fall arrest system that consists of steel columns holding headers that the track attaches to, an inverted-U system provides permanent fall protection that uses enclosed rigid track with a free-rolling trolley.

Maximum Average Arresting Force (MAAF)
MAAF is an acronym that stands for Maximum Average Arresting Force. Per ANSI Z359.14, during dynamic performance and conditioning testing, the sum of the recorded force data points above 500 pounds must be divided by the total number of samples above 500 pounds, resulting in a force average (4.1.9). For dynamic performance testing, Class A devices must have a MAAF that does not exceed 1,350 pounds and a maximum peak of 1,800 pounds. Class B devices must have a MAAF that does not exceed 900 pounds and a maximum peak of 1,800 pounds (ANSI Z359.14 3.1.9).

OSHA
An acronym that stands for Occupational Safety & Health Administration, OSHA was formed in 1971 following Congress’s implementation of the OSH Act in 1970. OSHA’s mission is to prevent work-related deaths, injuries, and illnesses by issuing and enforcing regulations that promote safety. OSHA standards are law and must be followed.

Post Suspension Fall Protection Anchor Track™ System
A horizontal fall arrest system that consists of a mast and tie rods supporting outrigger arms that the track attaches to, a post suspension system provides permanent fall protection that uses enclosed rigid track with a free-rolling trolley. A post suspension system is available as a single post, multiple post, or twin bay system (tracks on both sides of posts).

Rolling A-Frame Fall Protection Anchor Track™ System
A horizontal fall arrest system that consists of caster-equipped legs and braces holding a header that the track attaches to, a rolling A-frame system provides mobile fall protection that uses enclosed rigid track with a free-rolling trolley.

Safety Lanyard
A component of a fall protection system that lessens fall forces generated during a fall event, safety lanyards come in different styles and lengths. The two most common types of safety lanyards include “rip stitch” energy absorbing lanyards and self-retracting lanyards.

Swing Arm Fall Protection Anchor Track™ System
A horizontal fall arrest system that consists of track mounted to wall columns (using columns and headers), a permanent freestanding mast, or a freestanding mast attached to a portable base, a Swing Arm system provides permanent or mobile fall protection that uses enclosed rigid track with a free-rolling trolley.

Swing Fall Hazard
Swing fall hazard is created when the attachment point on a fall protection system is not kept directly over (or behind for fall restraint) the user’s D-ring. This off-plumb (off-center) loading creates a pendulum effect during a fall event due to fall forces. Swing fall hazard often accelerates freefall speed, causing serious injury or death if the fallen worker swings into an obstacle.

T-Frame Fall Protection Anchor Track™ System
A horizontal fall arrest system that consists of steel columns holding headers that the track attaches to, a T-frame system provides permanent fall protection that uses enclosed rigid track with a free-rolling trolley.

Traveling Bridge Fall Protection Anchor Track™ System
The traveling bridge system is a horizontal fall arrest system that consists of two runways and a bridge mounted to either existing ceiling structures or freestanding columns and headers. The bridge is attached to the runways with end trucks. The end trucks allow the bridge to move the entire length of the runways. The bridge contains a free-rolling trolley. This double-axes movement allows the trolley to follow the user in any direction (360 degrees). The worker’s attachment point is always centered over his or her head—minimizing swing fall hazards.

Trolley-Hook Height
Commonly referred to as trolley-clevis height in material handling, trolley-hook height is the distance from the ground or surface to the hook on the free-rolling trolley. Trolley-hook height is a dimension needed for quoting all of our Anchor Track™ Systems.

Wall Traveling Fall Protection System
A horizontal fall arrest system that consists of a tie-rod supported arm containing a free-rolling trolley. The entire system travels along runways attached to existing wall columns, allowing the system to span the entire length of your building and cover multiple work areas.