Lockout/Tagout Awareness Course 2026

1. Frage 1 von 25

   What is the main purpose of lockout?

   • ATo show which machines are due for their yearly inspection
   • BTo stop a machine from being started or moving while someone works on it
   • CTo save power by switching off machines that are not in use
   • DTo keep thieves from stealing tools left near the machine during the night shift
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   Antwort: B. To stop a machine from being started or moving while someone works on it

   Lockout holds an energy-isolating device in the safe position so equipment cannot be energized while people work on it.

2. Frage 2 von 25

   Which Canadian standard deals with the control of hazardous energy by lockout and other methods?

   • ACSA Z1000
   • BCSA B149
   • CCSA Z460
   • DCSA Z94.1
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   Antwort: C. CSA Z460

   CSA Z460, Control of hazardous energy — Lockout and other methods, sets out how to manage hazardous energy from machines and equipment.

3. Frage 3 von 25

   A roll-up door is raised for repairs and could drop. What kind of hazardous energy is this?

   • AChemical energy
   • BElectromagnetic energy
   • CGravitational energy
   • DThermal energy
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   Antwort: C. Gravitational energy

   CCOHS says an overhead roll-up door has gravitational potential energy, so a raised door can drop if it is not blocked.

4. Frage 4 von 25

   A machine has been switched off, but there is still pressure in one of its hydraulic lines. What is this called?

   • AResidual or stored energy
   • BStatic charge
   • CPrimary energy from the supply
   • DBackup power
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   Antwort: A. Residual or stored energy

   Energy left in a system after the supply is shut off, such as pressure in a line, is residual or stored energy. It must be released or blocked.

5. Frage 5 von 25

   Which of these is an energy-isolating device that can be locked out?

   • AA circuit breaker
   • BA stop button on the control panel
   • CA start button on a remote
   • DA selector switch for speed
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   Antwort: A. A circuit breaker

   Disconnect switches, circuit breakers, line valves and blocks isolate energy. Push buttons and selector switches are control switches, not isolating devices.

6. Frage 6 von 25

   A co-worker says pressing the stop button on the panel is enough before reaching into a machine. Why is this wrong?

   • AStop buttons must be pressed twice to work
   • BStop buttons only work during the day shift
   • CThe panel must be unplugged from the wall outlet first
   • DA control switch does not isolate the energy source
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   Antwort: D. A control switch does not isolate the energy source

   Push buttons and other control circuit switches are not energy-isolating devices, so they do not make the machine safe to work on.

7. Frage 7 von 25

   What information should a lockout tag show?

   • AThe reason, the date and time, and who applied it
   • BThe machine's purchase price and its warranty date
   • CThe phone number of the local fire department
   • DThe name of the company that built the machine
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   Antwort: A. The reason, the date and time, and who applied it

   A tag states why the lockout is in place, when it was applied and the name of the authorized person who applied it.

8. Frage 8 von 25

   Three workers will be inside the same machine. How many personal locks should be on the system?

   • AThree locks, one for each worker
   • BTwo locks, one for each shift
   • CNo locks if a tag is in place
   • DOne lock, held by the supervisor
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   Antwort: A. Three locks, one for each worker

   Each person must place their own lock on the system, so the number of locks matches the number of workers.

9. Frage 9 von 25

   How many keys should a personal lockout lock have?

   • ATwo keys, one kept in the office
   • BOne key, with no master key
   • CAs many as the crew needs
   • DOne key plus a supervisor's master key
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   Antwort: B. One key, with no master key

   CCOHS says each lock has one key and master keys are not allowed, so only the person who placed it can open it.

10. Frage 10 von 25

    Under BC's OHS Regulation, what must a worker do with the key to their personal lock during the job?

    • AHand it to the next shift
    • BKeep immediate control of it
    • CStore it in the machine's control panel
    • DLeave it hanging on the lock
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    Antwort: B. Keep immediate control of it

    Section 10.7 of BC's OHS Regulation says workers must keep immediate control of the keys to their personal locks for the whole job.

11. Frage 11 von 25

    Under BC's OHS Regulation, who may normally remove a personal lock?

    • AThe worker who installed it
    • BA security guard on patrol
    • CThe machine operator
    • DAny supervisor on the current shift
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    Antwort: A. The worker who installed it

    Section 10.8 of BC's OHS Regulation says a personal lock must only be removed by the worker who installed it.

12. Frage 12 von 25

    In BC, a worker went home and left their lock on. Before a supervisor removes it, what must the supervisor do?

    • AWait one full week before touching it
    • BCut it off right away so production can restart on time
    • CAsk a security guard to witness the removal
    • DMake every reasonable effort to contact that worker
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    Antwort: D. Make every reasonable effort to contact that worker

    Section 10.8 says the supervisor or manager must try hard to contact the worker who installed the lock and make sure the equipment can be run safely.

13. Frage 13 von 25

    In BC, if a worker's personal lock was removed while they were away, when must they be told?

    • AAt their yearly performance review
    • BWithin 30 days, in writing
    • CAt the start of their next shift
    • DOnly if they ask about it
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    Antwort: C. At the start of their next shift

    Section 10.8(3) of BC's OHS Regulation says the worker must be told at the start of their next shift if their lock was removed.

14. Frage 14 von 25

    What is the first step of a lockout procedure, according to CCOHS?

    • APrepare by identifying the equipment and energy sources
    • BTry to start the machine to see if it runs
    • CPut your personal lock on the main power switch right away
    • DRemove the machine's guards to look inside it
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    Antwort: A. Prepare by identifying the equipment and energy sources

    The first step is to prepare: identify the equipment, all its energy sources and the devices needed to isolate them.

15. Frage 15 von 25

    During a lockout, when are locks and tags applied?

    • ABefore the machine is shut down
    • BAfter the energy is isolated and stored energy is released
    • COnly after the repair work is finished
    • DBefore anyone in the area is told about the planned shutdown
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    Antwort: B. After the energy is isolated and stored energy is released

    CCOHS lists the order as shut down, isolate, release stored energy, then apply locks and tags, then verify.

16. Frage 16 von 25

    Why do workers test the start controls after locking out and before starting work?

    • ATo make sure the lock is the right colour
    • BTo warm up the motor so it restarts quickly
    • CTo check that the machine still has power for later
    • DTo verify that the machine will not start
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    Antwort: D. To verify that the machine will not start

    Verifying isolation proves the lockout works. BC's regulation requires workers to verify that all energy sources are locked out before work starts.

17. Frage 17 von 25

    Alberta's explanation guide describes a "bump" test. What is it?

    • ATrying the start controls to confirm it will not run
    • BKnocking on the machine's housing to check whether anyone is inside
    • CMoving the machine slightly to check that it is sitting level on the shop floor
    • DTapping the lock several times to check that it is closed tightly
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    Antwort: A. Trying the start controls to confirm it will not run

    A bump test is an attempt to activate the equipment after isolation to confirm it will not operate, as part of verifying isolation.

18. Frage 18 von 25

    Before locks are removed and a machine is restarted, what should be done?

    • AAsk the newest worker to press start
    • BCheck the area and make sure everyone is clear
    • CRemove the tags first and leave the locks in place
    • DTurn the controls to full speed
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    Antwort: B. Check the area and make sure everyone is clear

    CCOHS says to inspect the area, confirm people are clear, put controls in neutral, remove devices and tell affected workers before re-energizing.

19. Frage 19 von 25

    In a group lockout using a lock box, when can the isolation keys be taken out of the box?

    • AWhen every worker's personal lock is off the box
    • BWhen half of the workers have finished
    • CAt the end of the first shift
    • DWhen the supervisor decides the job is nearly done
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    Antwort: A. When every worker's personal lock is off the box

    In group control, the keys go in a lock box and each worker adds a personal lock. The keys cannot be removed until all personal locks are off.

20. Frage 20 von 25

    Which part of Alberta's OHS Code is titled Managing the Control of Hazardous Energy?

    • APart 9
    • BPart 15
    • CPart 32
    • DPart 29
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    Antwort: B. Part 15

    Part 15 of Alberta's OHS Code, Managing the Control of Hazardous Energy, covers isolation, verifying isolation, personal locks and returning to operation.

21. Frage 21 von 25

    Under BC's OHS Regulation, what must happen before maintenance work is done on machinery that is shut down?

    • AThe owner must call the local police
    • BThe energy-isolating devices must be locked out
    • CThe machine must be painted a warning colour
    • DThe machine must be unplugged for a full 24 hours
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    Antwort: B. The energy-isolating devices must be locked out

    Section 10.3 says no work may be done on shut-down machinery until, among other things, the energy-isolating devices are locked out.

22. Frage 22 von 25

    In a lockout program, what is an "authorized person"?

    • AA visitor who has signed in at the front desk today
    • BAnyone who works in the same building
    • CA trained person assigned to carry out lockout
    • DThe person who owns the equipment
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    Antwort: C. A trained person assigned to carry out lockout

    CCOHS describes an authorized person as someone qualified through knowledge, training and experience who has been assigned to carry out hazardous energy control.

23. Frage 23 von 25

    On a night patrol, you find a lock and tag on a breaker panel and the lock looks forgotten. What should you do?

    • ALeave it in place and report it to your supervisor
    • BTake the tag off and keep it as evidence
    • CTurn the breaker on to test whether the lock works
    • DCut the lock off so day staff can use the machine
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    Antwort: A. Leave it in place and report it to your supervisor

    Only the worker who installed a lock may remove it, under the site's procedure. A guard should never touch it and should report concerns.

24. Frage 24 von 25

    Why is a tag alone not enough to keep a machine from starting?

    • ATags fade in sunlight after only a few hours
    • BA tag must be signed by a provincial inspector to count
    • CTags are only allowed on electrical equipment
    • DA tag warns people but cannot physically stop anyone
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    Antwort: D. A tag warns people but cannot physically stop anyone

    CCOHS says tagout is always used when lockout is required. The lock is what holds the isolating device in the safe position; a tag only warns.

25. Frage 25 von 25

    Who must make sure only trained people carry out lockout work?

    • AAny worker who happens to be working nearby at the time
    • BThe supervisor, as part of the employer's program
    • CThe provincial fire marshal's office
    • DThe company that manufactured the equipment
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    Antwort: B. The supervisor, as part of the employer's program

    CCOHS says supervisors must ensure only trained people do lockout work, and employers must train workers on their roles.

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