Why must the size of the space's openings be considered when choosing rescue equipment?
Confined Space: Rescue and emergencies
Written on-site rescue procedures, trained rescuers, why 911 is not a rescue plan, rescuing from outside, breathing air for rescuers, drills and notifying rescue services.
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- 14 questions
- Topic drill
Study reference: Canadian confined space rules and guidance (Oct 2026), Ch. 10 Rescue and emergencies — O. Reg. 632/05 ss. 11–12; Ontario confined spaces guideline, On-site rescue procedures and equipment; WorkSafeBC OHSR ss. 9.37–9.39; CCOHS Confined Space — Program
All 14 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
Why must the size of the space's openings be considered when choosing rescue equipment?
- Larger openings require more expensive equipment to be purchased
- Small openings mean that no rescue equipment is needed at all
- Opening size only matters for the paperwork, not the rescue
- Equipment and rescuers must fit through the entry and exit points
In B.C., when must rescue personnel be notified about confined space work?
- Before workers enter, and again when everyone has exited
- Only if an entrant is actually injured during the work
- Only once a year, at the annual safety meeting
- Only after the job is fully finished and billed
What is required of the rescue equipment named in the plan?
- Readily available, suitable for the space, and inspected
- Shared with other sites, wherever it is needed
- Bought new for each entry and thrown away after
- Stored at head office, to keep it safe, clean and dry
May an Ontario employer contract out confined space rescue services?
- No, rescue must always be done by the entrants' own supervisor
- Yes, if the response is timely; the employer stays responsible
- Only if the rescue company is located in the same building
- Yes, and then the employer has no further duties for rescue
One rescue team covers two confined spaces entered at the same time. What problem does the guideline point out?
- A rescue team may only cover spaces that are exactly the same size
- There is no problem; one team can always cover any number of spaces
- Two spaces can never be entered on the same day under any circumstances
- A team busy at one space cannot rescue immediately at the other
Where possible, from where should a rescue be done?
- From the site office, by radio instructions
- From outside the confined space
- From the far end of the space, through a new hole
- From inside, as close to the victim as possible
What breathing protection should rescuers entering a hazardous atmosphere use?
- SCBA or a supplied-air respirator with an escape bottle
- No respirator, if they move very quickly
- A wet cloth held over the nose and mouth
- A paper dust mask, which filters out most toxic gases
In B.C., if a fire department will provide confined space rescue, what is required?
- A thank-you letter after each job
- A verbal promise made by phone to the supervisor
- Nothing; fire departments always come
- A written agreement detailing the services
Must every member of an Ontario rescue team have all three kinds of rescue training?
- Yes, and each must also be a licensed nurse
- No, as long as the team as a whole has them
- No, training is optional for rescue workers
- Yes, each person must hold every certificate
How often must B.C. rescue persons hold a practice drill?
- At least once a year
- Once every five years
- Never; training is enough
- Only after a real rescue
A worker collapses inside a tank. A co-worker who is untrained and has no breathing equipment wants to go in. What should happen?
- They should go in only if they are stronger than the collapsed worker
- They must not enter; trained, equipped rescuers carry out the rescue
- They should go in quickly and hold their breath while pulling the worker out
- They should go in after removing the gas monitor so it does not alarm
Can calling 911 be an employer's confined space rescue plan in Ontario?
- Yes, as long as the attendant has a working phone
- No; 911 does not replace on-site rescue procedures
- Yes, if the space is within 10 minutes of a fire hall
- Yes, for any confined space smaller than a garage
In Ontario, what must be in place before any worker enters a confined space?
- Written on-site rescue procedures ready for immediate use
- A promise from the supervisor to call 911 if anything happens
- The phone number of the nearest hospital posted at the hatch
- A list of workers who volunteered to go in if needed
Ontario rescue persons must be trained in which three areas?
- Fire inspection, building codes and electrical design work
- Rescue procedures, first aid and CPR, and the rescue equipment
- Welding, forklift driving and crane hand signals used on the site
- Accounting, payroll and the company's sales procedures
Rescue and emergencies: 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 ↗
rescue
- No worker enters or stays in a confined space unless written on-site rescue procedures are ready for immediate use.
- Before entry, enough people must be available who are trained in the on-site rescue procedures, first aid and CPR, and the use of the rescue equipment in the plan.
- Rescue equipment must be readily available, suitable for entering the space, and inspected (with a written record) by a person with adequate knowledge, training and experience.
- The employer sets communication methods suited to the hazards so entrants can reach the attendant.
On-site rescue procedures and equipment
- Calling 911 is not an on-site rescue procedure; emergency services do not replace the employer's duty.
- Rescue may be contracted out only if it allows a timely response; the employer remains responsible.
- Not every rescuer needs all three kinds of training, as long as the team as a whole has them.
- Equipment examples: harnesses and lifelines, hoist or retrieval systems, self-contained breathing apparatus (SCBA), airline respirators; it must fit through the space's openings.
- One rescue team busy at one space is not available for another; plan for simultaneous entries.
Confined Space: Program
- More than 60 % of confined space deaths are would-be rescuers who were not trained and equipped.
- Rescue from outside the space when possible; no one enters to rescue unless trained in the procedures and wearing proper protective equipment.
- Rescuers must not breathe the same air as the victim; use SCBA or a supplied-air respirator with an escape bottle.
- An attendant stays outside to monitor during the rescue.
- Practise rescue procedures frequently.
WorkSafeBC OHS Regulation ss. 9.37–9.39
- The employer must provide rescue services; if another company or a fire department provides them, there must be a written agreement.
- Rescue persons must be equipped and trained, with a practice drill at least once a year and records kept.
- The supervisor or standby person notifies rescue personnel before entry and again when everyone has left.
Other topics
- What is a confined spaceThe legal definition in Ontario and B.C., continuous human occupancy, examples from tanks to manholes, when entry begins, and why so many deaths are would-be rescuers.
- Atmospheric and other hazardsOxygen deficiency and enrichment, toxic gases such as hydrogen sulphide and carbon monoxide, simple asphyxiants, where hazards come from, engulfment and physical hazards.
- Program, hazard assessment and planThe written program, the signed hazard assessment, the plan written by a competent person, co-ordination when several employers share a space, and the hierarchy of controls.
- Entry permitsWhat an entry permit must contain, issuing a separate permit for each entry, checking it before every shift, and keeping a record of entries and exits.
- Atmospheric testingWho tests, with what instruments, when to test and re-test, recording results, continuous monitoring and B.C.'s 20-minute pre-entry rule.
- Flammable atmospheres and hot workLower explosive limits for inspection, cold work and hot work, combustible dust, oxygen enrichment, inerting, and the conditions for hot work in a confined space.
- Ventilation and purgingPurging versus ventilating, mechanical and natural ventilation, alarms for ventilation failure, why pure oxygen is never used, and respirators when ventilation is not practical.
- Isolation, lockout and engulfmentBlanking or disconnecting piping, double block and bleed, why closing a valve is not enough, locking out electrical and moving equipment, and free-flowing materials.
- The attendant (standby person)Where the attendant stands, constant communication, never entering the space, summoning rescue, and B.C.'s standby rules for low, moderate and high hazard atmospheres.
- Training, access and recordsHazard-recognition and plan-specific training, annual review, entry and exit openings, preventing unauthorized entry, protective equipment and how long records are kept.