Which of the following illustrates an interlock safety detection related to guarding?

• A. Guards in place
• B. Oil pressure is at a safe range
• C. Air pressure is at a safe level
• D. Oil temperature is at a safe level

Answer: (A)

Guarding interlocks ensure safe operation by detecting whether the protective barrier is properly in place. When the guard is closed and latched, the interlock sees this and allows the machine to run; if the guard is opened or removed, the interlock trips and stops the machine to prevent access to moving parts. So “guards in place” directly demonstrates an interlock safety detection related to guarding.

The other options describe safe states of machine systems (like oil pressure, air pressure, or oil temperature) that matter for overall operation, but they don’t relate to whether a guard is present or the guarding interlock is satisfied.