Fall Restraint System
A fall restraint system is a type of fall protection designed to prevent a worker from reaching an unguarded edge or falling from a work position, typically by attaching the worker to an anchorage with equipment that limits travel. Under WorkSafeBC, the total fall distance must not exceed 30 cm (1 ft), and the worker must be able to self-rescue or regain footing immediately. It is preferred over fall arrest systems in the hierarchy of controls.
On a manufacturing shop floor, fall restraint systems are applied on elevated platforms, mezzanines, and around floor openings where guardrails are not feasible. Workers wear full-body harnesses connected via fixed-length lanyards to rated anchors, configured so they cannot reach unguarded edges. For aerial work platforms, federal regulations require restraint systems connected to manufacturer-specified anchorage. SafeDesk compliance tools track anchor locations, lanyard lengths, and training records, ensuring total fall distance remains under 30 cm. Restraint is preferred over arrest when geometry allows and self-rescue is possible.
- Misclassifying fall arrest setups as fall restraint: Using shock-absorbing lanyards designed for arrest, which allow free fall over 30 cm, violates WorkSafeBC definitions and may lead to under-designed anchors.
- Incorrect lanyard length and anchor position: Using overly long lanyards or movable anchors that allow workers to reach unguarded edges fails to meet the definition of fall restraint under WorkSafeBC and COHSR.
- Using restraint systems where self-rescue is not feasible: In complex structures, a restrained worker may end up suspended over hazardous equipment, unable to self-rescue, effectively functioning as fall arrest without proper rescue planning.
How do you technically distinguish fall restraint from travel restraint and work positioning under WorkSafeBC and CSA?
Under WorkSafeBC, fall restraint systems prevent a worker from falling from a work position or travelling to an unguarded edge. Travel restriction is a mode using fixed-length lines to limit horizontal reach. Work-positioning systems are also restraint if they prevent any drop below the working surface. CSA Z259 treats active fall-protection systems, including restraint, under Z259.16/Z259.17, with travel restraint limiting horizontal reach and work positioning controlling vertical/angular positioning.
What anchor strength and design requirements apply to fall restraint vs fall arrest under WorkSafeBC and CSA/COHSR?
WorkSafeBC requires permanent anchors to sustain at least 3.5 kN or 4 times the worker's weight. For restraint-only anchors, load requirements are lower, but if equipment is dual-rated, anchor design must assume higher arrest loads per CSA Z259.16. COHSR mandates personal fall-protection systems meet CSA Z259.16, with anchors for aerial devices being manufacturer-specified or engineer-certified. SafeDesk records should specify anchor rating, failure mode, and whether design is restraint-only or arrest-capable.
How is ≤30 cm total fall distance evaluated in practice to qualify as fall restraint under WorkSafeBC?
Evaluation involves calculating worst-case geometric scenarios: vertical distance from harness D-ring to supporting surface, slack in lanyard and connectors, and dynamic effects of a slip. Controls include using short fixed-length lanyards, anchoring at or above shoulder level, and eliminating slack. If vertical displacement of the center of gravity exceeds 0.30 m, the system is not restraint. Failure to document this analysis can lead to misclassification as restraint when it functions as low-clearance arrest.