What does SafeMark require for machine guarding?

• A. Physical barriers or safety devices to prevent contact with moving parts and provide safe operating conditions.
• B. Post-operations cleaning schedule.
• C. Required frequent rest breaks.
• D. Signage for safety rules.

Answer: (A)

Safeguarding machines by using physical barriers or safety devices that prevent contact with moving parts is the essential idea. SafeMark requires these protections so the hazardous area is isolated and workers cannot reach moving components, helping to prevent injuries. Examples include fixed guards, interlocked gates, and presence-sensing devices that stop the machine when someone enters the danger zone. The other options—post-operations cleaning schedules, required rest breaks, and safety signage—do not directly prevent access to moving parts and thus don’t address machine guarding.