Who must inspect and test a safety net before it is put in service?
Working at Heights: Travel restraint, fall restricting and fall arrest
What each system is made of and does, free-fall and force limits, inspection before each use, removing equipment after a fall, and safety nets.
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Study reference: Ontario working at heights sources (Oct 2026), Ch. 7 Fall protection systems — O. Reg. 213/91 ss. 1, 26.4–26.6, 26.8; Working at Heights Training Program Standard 9.2.1
All 16 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
Who must inspect and test a safety net before it is put in service?
- An engineer, or a competent person under an engineer
- Any worker who will be working above the net that day
- The supplier's sales staff when the net is delivered
- Nobody, if the net was used on a previous project
How must a fall arrest system be arranged?
- So the lanyard is as long as possible to give more freedom of movement
- So the anchor is always below the worker's feet
- So the worker can reach any edge of the roof without limits
- So the worker cannot hit the ground or an object or level below
Who must inspect a travel restraint, fall restricting or fall arrest system, and when?
- A competent worker, before each use
- Nobody, if it is brand new
- An engineer, once a month
- The supplier, once a year at renewal
What is the maximum free fall allowed by a fall restricting system (other than for wood pole climbing)?
- 1.2 metres
- 0.6 metres
- 3 metres
- 1.8 metres
After a worker falls and the fall arrest system stops the fall, what happens to the system?
- It can be reused right away if it looks fine to the worker
- It is stored for a week and then used again normally
- It must be painted a different colour before reuse
- It is removed from service until the manufacturer certifies it
To what must a fall arrest system be attached?
- A loose pile of materials
- Another worker's harness
- An independent fixed support
- The worker's own tool belt or pouch
What does a fall arrest system do?
- Prevents the worker from reaching the edge
- Warns the worker before reaching the edge
- Lowers the material instead of the worker
- Stops a worker's fall once it has started
Under the regulation, who is a competent worker for inspecting fall protection?
- Any worker who has used a harness at least once before on any site
- Any visitor who has read the manufacturer's label
- A worker qualified to do the work who knows the law and the dangers
- The youngest worker on site, who has the best eyesight
A worker using a fall restricting system slips farther than its design distance. What must happen?
- Report it at the end of the month in the safety log
- Take it out of service until the manufacturer certifies it
- Shorten the lanyard by tying a knot and keep working
- Keep using it, since nobody was injured in the slip
What does a travel restraint system do?
- Catches a falling worker in a net below the edge
- Lowers a worker slowly to the ground after a fall
- Keeps a worker from reaching a place where they could fall
- Stops a worker after they have already fallen part of the way down
After it arrests a fall, what must a full body harness not do by itself?
- Support the worker's legs
- Hold the worker upright
- Release or further lower the worker
- Stay attached to the lanyard and anchor
Which components make up a fall arrest system under Ontario's regulation?
- A full body harness and a shock-absorbing lanyard
- A guardrail and a toe board at the edge
- A hard hat and a pair of steel-toed boots
- A safety belt and a rope tied in a simple knot
What is the maximum peak fall arrest force a fall arrest system may put on a worker?
- 50 kilonewtons
- 8 kilonewtons
- 2 kilonewtons
- 22 kilonewtons
What is a fall restricting system?
- A sign that restricts entry to the roof during high winds and storms
- A net that restricts falling debris below a scaffold
- A rule that restricts the number of workers on a ladder
- A type of fall arrest system that limits a fall to a set distance
When must a fall arrest system not include a shock absorber?
- Whenever the worker weighs less than the weight shown on the label
- Never; a shock absorber is required in every case
- Whenever the work lasts less than one hour
- When its extension could make the worker hit the level below
Which may be used as the body support in a travel restraint system?
- A rope tied around the waist
- Only a hard hat with a chin strap
- A reflective safety vest
- A full body harness or a safety belt
Travel restraint, fall restricting and fall arrest: key rules to remember
Our summary of what the official handbook says on this topic, in our own words. Read it before or after the practice questions above, then check the original chapter. Read the official chapter ↗
definitions
- Travel restraint system: components that restrict a worker's movement on a work surface and prevent the worker from reaching a place from which they could fall.
- Fall arrest system: components that, when connected to a fixed support, can arrest a worker's fall.
- Fall restricting system: a type of fall arrest system designed to limit a fall to a specified distance.
- Full body harness: arrests a vertical or near-vertical fall and distributes the forces through leg and shoulder straps and an upper back (dorsal) attachment; after the arrest it does not by itself release or lower the worker.
- Fixed support: a permanent or temporary structure, or a component, that can withstand all loads it is meant to support.
travel restraint
- A full body harness with adequate attachment points or a safety belt, attached by a lifeline or lanyard to a fixed support (s. 26.7).
- Inspected by a competent worker before each use; a defective component is taken out of service immediately.
fall restricting
- Attached to an independent fixed support and arranged so the free fall does not exceed 0.6 m.
- Inspected before each use; if a worker falls or slips more than the design distance, the system is taken out of service until the manufacturer certifies all components for reuse.
fall arrest
- A full body harness with adequate attachment points and a lanyard with a shock absorber or similar device, attached by a lifeline or the lanyard to an independent fixed support.
- Arranged so a worker cannot hit the ground or an object or level below.
- No shock absorber may be used if it could cause the worker to hit the ground or an object below.
- Peak fall arrest force on the worker may not exceed 8 kN.
- Inspected by a competent worker before each use; defective components out of service immediately.
- After a fall, the system is removed from service immediately and not reused unless the manufacturer certifies all components as safe.
safety nets
- Designed, tested and installed to ANSI/ASSE A10.11-2010, installed by a competent worker, and inspected and tested by an engineer (or a competent person supervised by the engineer) before use, with documentation kept at the project.
competent worker
- Qualified by knowledge, training and experience to do the work, familiar with the Act and regulations, and aware of the dangers.
Study the Travel restraint, fall restricting and fall arrest rules as flashcards →
Other topics
- Who needs working at heights trainingWho must take approved training, the two modules, minimum hours, the 75 per cent written test, three-year validity, refresher training, records and proof.
- Roles, rights and responsibilitiesDuties of employers, constructors, supervisors, suppliers and workers for work at heights, the three worker rights, reporting fall hazards and site-specific training.
- Recognizing fall hazardsWhen Ontario's construction fall protection rules apply, falls into machinery, water or openings, fragile surfaces and skylights, how fast a fall happens, and safe work plans.
- Choosing protection: the hierarchyEliminating the hazard first, guardrails before personal equipment, Ontario's ranking of travel restraint, fall restricting, fall arrest and safety nets, and the limits of PPE.
- Guardrails, coverings and barriersGuardrail heights, rails, toe boards, loads and post spacing, wood and wire rope guardrails, covers over openings, temporary removal, roof barriers and drowning hazards.
- LaddersPortable ladder grades, set-up angle, extension above the landing, step-ladder rules, three-point contact, inspection, fixed ladders and when not to use a ladder.
- Harnesses, lanyards and connectorsFull body harnesses and safety belts, the fall arrest D-ring, lanyards and shock absorbers, carabiners and snap hooks, rope grabs, self-retracting lifelines, inspection and care.
- Vertical and horizontal lifelinesOne worker per vertical lifeline, positive stops, no knots or splices, protecting lifelines, engineered horizontal lifelines and their inspection.
- Anchor points and fixed supportsPermanent and temporary anchors, required strengths, sharp edges, the three types of anchor systems, and choosing safe anchor points.
- Fall distance, clearance and swing fallsFree fall, shock absorber extension, clearance below, bottoming out, the pendulum (swing-fall) effect, harness suspension and keeping tied off.
- Rescue planningWritten rescue procedures before using fall arrest or nets, roles in a fall rescue plan, site-specific plans, and rescue when workers may drown.