Machinery
Link machine danger points to guarding principles
Distinguish crushing, cutting and entanglement by motion and access.
Identify the hazardous motion
Mark where rotating, reciprocating, cutting or in-running motion can draw in a body part.
Guard against access
Compare fixed, interlocked and sensing devices by how they block hazardous access.
120 items · 180 minCombined · about 120 minFloors + practical 60
Isolate every energy source
Lock out electrical, pressure and stored positional energy, then verify a zero-energy state.
Study failure scenarios
Ask what happens if a guard is bypassed or material jams.