If a machine requires safety training but has no lockout feature, what is an acceptable method to prevent use during service?

If a machine requires safety training but has no lockout feature, what is an acceptable method to prevent use during service?

• A. Tag out the machine
• B. Warn occupants personally not to use the machine
• C. Warn occupants via public address system not to use the machine
• D. The machine must be removed when not in use

Answer: (A)

Controlling hazardous energy through lockout/tagout practices is essential before servicing equipment. If a machine can’t be locked out, applying a tag out device at the energy isolation point communicates that the machine must not be operated until the tag is removed by an authorized person who has verified it’s safe. The tag serves as a visible, formal warning that helps prevent unintended startup during maintenance. Relying on personal warnings or a public-address warning is not a formal, enforceable control and can be ignored or overlooked. Simply removing the machine from service would defeat the purpose of the energy-control step. Tagging provides a practical, recognized method to prevent use when locking out isn’t possible, as long as trained personnel apply and maintain the tag and are the only ones who remove it after confirming safe conditions.

Controlling hazardous energy through lockout/tagout practices is essential before servicing equipment. If a machine can’t be locked out, applying a tag out device at the energy isolation point communicates that the machine must not be operated until the tag is removed by an authorized person who has verified it’s safe. The tag serves as a visible, formal warning that helps prevent unintended startup during maintenance.

Relying on personal warnings or a public-address warning is not a formal, enforceable control and can be ignored or overlooked. Simply removing the machine from service would defeat the purpose of the energy-control step. Tagging provides a practical, recognized method to prevent use when locking out isn’t possible, as long as trained personnel apply and maintain the tag and are the only ones who remove it after confirming safe conditions.