Safeguards Training Short

What is the primary difference between a "guard" and a "device"?

A guard is a physical barrier that prevents access to dangerous areas, whereas a device (like a light curtain or sensor) detects a person's presence and stops the machine to prevent injury.

Why are "interlocked" guards considered superior to simple removable covers?

Interlocked guards are connected to the machine's power source; if the guard is opened or removed, the power is automatically tripped, preventing the machine from operating until the guard is replaced.

Can a machine guard be adjustable?

Yes. Adjustable guards allow a machine to handle different sizes of stock while still providing a barrier, but they must be manually set by the operator for each specific task to remain effective.

What is a "two-hand control" safety device?

This device requires the operator to use both hands simultaneously on separate controls to start the machine cycle, ensuring that hands cannot be in the point of operation during the dangerous part of the cycle.

Are presence-sensing mats effective for all machinery?

Presence-sensing mats are effective for machines that can be stopped quickly, as they trip the power when someone steps onto the mat within the danger zone.