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Practice test · Lockout/Tagout

Lockout/Tagout Practice Test

Twenty-five questions on the control of hazardous energy — the standard federal OSHA cited fourth most often in fiscal year 2025. They cover what the standard applies to and what it leaves out, the difference between an authorized and an affected employee, what a written energy control procedure has to contain, the six steps of applying lockout, verification, group lockout, shift changes, and the limits of a tag. Every explanation quotes the paragraph of 29 CFR 1910.147 it comes from so you can read the rule yourself.

25 questions about 20 min

Not OSHA-authorized training. SteelToeTools is not affiliated with, endorsed by, or authorized by OSHA or the U.S. Department of Labor. This free educational content does not satisfy any OSHA or other regulatory training requirement, and no card, certificate, or credential is issued. Only OSHA-authorized trainers can deliver OSHA Outreach Training (10-Hour and 30-Hour) and issue DOL cards. Always follow your employer's training program and applicable federal, state, and local requirements.

Frequently asked questions

No. Nothing is issued for taking this test — no card and no document of any kind. OSHA does not run a lockout/tagout examination, and the training required by 1910.147(c)(7) is your employer's responsibility, including the part that is specific to your machines and your energy control procedures.

No. Under 1910.147(b), an authorized employee is a person who locks out or tags out machines to service them, and 1910.147(c)(7)(i)(A) requires that person to be trained on the hazardous energy sources actually present in your workplace, their type and magnitude, and the means of isolating them. Only your employer can designate and train you, and it has to certify that training under (c)(7)(iv).

It is written on 29 CFR 1910.147, which by its own terms at (a)(1)(ii)(A) does not cover construction or agriculture. Construction work is governed by 29 CFR 1926, where 1926.417 requires controls and de-energized circuits to be tagged and rendered inoperative, and 1926.702(j) covers concrete equipment. Where the answer would differ, the question says so.

You get one point per question and a percentage at the end, with the explanation for every question you missed. The 70% shown is a common classroom threshold, not an official pass mark — the value is in reading the explanations and going back to the paragraph they cite.

1910.147(c)(7)(iii) requires your employer to retrain whenever your job assignment changes, whenever a machine, process or energy control procedure changes, and whenever a periodic inspection shows a gap in how the procedure is being used. Reviewing before a new machine or a new shift assignment is a good habit.

Sources & references

Content checked against these sources — last reviewed August 28, 2026.

By — Editorial team of SteelToeTools.com (published by LSEA SAS) Updated