ANSI B11.0 Machine Risk Assessment: 5-Step Checklist for 2026

Frequently Asked Questions

What does ANSI B11.0 add beyond OSHA 1910.212?

OSHA 1910.212 requires machine hazards to be guarded. ANSI B11.0 adds a structured method for reviewing tasks, estimating risk, and selecting appropriate risk-reduction measures.

Should a machine risk assessment be done by machine or by task?

It should be task-based. A machine-level review can miss exposure during setup, jam clearing, cleaning, changeover, and maintenance.

What factors are usually used in machine safety risk scoring?

A machine hazard scoring matrix commonly considers severity of injury, frequency or duration of exposure, probability of occurrence, and the possibility of avoiding harm. The key is using the same factors consistently across tasks.

Does a written machine risk assessment replace lockout/tagout requirements?

No. If servicing or maintenance exposes employees to hazardous energy, 29 CFR 1910.147 still applies and must be addressed as part of the control strategy.

What should a completed machine risk assessment document include?

It should identify the task, the hazard, the risk level, the existing and required controls, and who is responsible for follow-up. The most useful versions also show how risk changes after controls are applied.