Installed physical safeguards must meet all these minimum requirements except

Installed physical safeguards must meet all these minimum requirements except

• A. Must stop machine when guard is opened
• B. Must be able to withstand impact
• C. Allow automatic start up after power failures
• D. Must be inspected periodically

Answer: (C)

The key idea is that installed physical safeguards are designed to prevent exposure to hazards by stopping the machine when a guard is breached, being robust against impact, and being kept in safe condition through regular inspections. Allowing automatic startup after a power failure is not a required minimum because it can re-engage hazardous motion without anyone present to verify that guards are in place and the area is safe. Restart after power loss should be a deliberate, controlled action by the operator, often involving a reset or lockout/tagout. The other requirements—stopping the machine when the guard is opened, withstanding impact, and periodic inspections—are essential to ensure the guard continues to protect workers and remains effective over time.

The key idea is that installed physical safeguards are designed to prevent exposure to hazards by stopping the machine when a guard is breached, being robust against impact, and being kept in safe condition through regular inspections. Allowing automatic startup after a power failure is not a required minimum because it can re-engage hazardous motion without anyone present to verify that guards are in place and the area is safe. Restart after power loss should be a deliberate, controlled action by the operator, often involving a reset or lockout/tagout. The other requirements—stopping the machine when the guard is opened, withstanding impact, and periodic inspections—are essential to ensure the guard continues to protect workers and remains effective over time.