OSHA lockout/tagout (29 CFR 1910.147): authorized and affected employees, lock versus tag, the application sequence, stored energy, verification, release, periodic inspection and training. Free practice quiz with instant feedback; every explanation cites the 29 CFR paragraph it is based on. Independent review material: not affiliated with or endorsed by OSHA, not an OSHA Outreach (10/30-hour) exam, and it does not replace the training and evaluation your employer must provide.
Question 1 · Single choice · 90s · 1 pt
Who is an "authorized employee" under the lockout/tagout standard?
- Any employee who works in the same building as the machine
- A person who locks or tags out equipment to service it
- The machine operator during normal production work
- Only the plant manager or the maintenance supervisor
Question 2 · Single choice · 90s · 1 pt
Who is an "affected employee"?
- The person who applies the lock or tag to the machine
- An outside OSHA compliance officer visiting the site
- Any contractor who services equipment elsewhere in the same plant
- One who uses the machine being serviced or works in that area
Question 3 · Multiple choice · 90s · 1 pt
Which of these are energy sources the standard has in mind? Choose the 3 correct answers.
- Electrical
- Hydraulic
- Pneumatic
- Wi-Fi signals
Question 4 · Put in order · 90s · 1 pt
Put the first steps of applying energy control in order.
- Apply the lockout or tagout devices
- Isolate it from its energy sources
- Prepare: know the type of energy, its hazards and how to control it
- Relieve or restrain stored energy
- Shut down the machine in an orderly way
- Verify isolation before starting work
Question 5 · True / False · 90s · 1 pt
If an energy isolating device can be locked out, the program must use lockout unless the employer can show that tagout gives full employee protection.
Question 6 · True / False · 90s · 1 pt
A tag physically prevents a machine from being started, just like a lock.
Question 7 · Single choice · 90s · 1 pt
What must a tagout device's attachment withstand at a minimum?
- An unlocking strength of no less than 50 pounds
- An unlocking strength of no less than 10 pounds
- Hand pressure only, since it is attached by hand
- No minimum, as long as it is self-locking
Question 8 · Single choice · 90s · 1 pt
Who removes a lockout device when the work is done?
- Any supervisor who is on duty at that time
- The next shift's operator, at restart
- The employee who applied it, with narrow exceptions
- Whoever has the key or a pair of bolt cutters
Question 9 · Single choice · 90s · 1 pt
Before starting work on a locked-out machine, what must the authorized employee do?
- Remove the lock briefly to test the controls
- Verify isolation and de-energization
- Ask the operator whether the machine is off
- Nothing: the lock alone is enough protection
Question 10 · Single choice · 90s · 1 pt
How often must the employer inspect each energy control procedure?
- At least annually
- Every five years
- Only after an injury
- Every month
Question 11 · Multiple choice · 90s · 1 pt
When is retraining required for authorized and affected employees? Choose the 3 correct answers.
- A change in their job assignments
- A change in machines, equipment or processes that presents a new hazard
- A change in the energy control procedures
- Every time the employee takes a vacation
Question 12 · True / False · 90s · 1 pt
Affected employees must be notified before lockout devices are applied and after they are removed.
Question 13 · True / False · 90s · 1 pt
Servicing a cord-and-plug machine is outside the standard if it is unplugged and the plug is under the exclusive control of the person doing the work.