Fixed Guard
When must a guard be classified as a fixed guard rather than a movable or interlocked guard?
A guard should be classified as fixed when access to the danger zone is not required during normal operation, the hazard is localized and can be blocked by a stationary barrier, removal is only needed for periodic maintenance under lockout, and the barrier can be securely attached with permanent or tool-requiring fasteners.
How should fixed guards be designed to meet WorkSafeBC expectations around reach and containment?
Fixed guards must prevent reach from all directions using opening size and distance criteria from reach limitation tables. Construction materials must withstand impact and contain broken parts. Fasteners must require tools, resist vibration, and not create pinch points. Design aligns with CSA Z432 principles.
Under BC OHS, is it acceptable to retrofit a fixed guard with quick-release latches if a padlock is used?
No, retrofitting with quick-release latches is problematic unless a special tool or key is required. BC OHS requires that fixed guards not be readily removable without tools. If a latch can be opened by hand, it no longer meets the fixed guard definition. Acceptable alternatives include using a special tool or reclassifying as an interlocked guard.
A fixed guard is a stationary physical barrier attached to a machine or fixed structure that can only be removed or opened using tools. It prevents workers from reaching over, under, around, or through to hazardous moving parts or danger zones. Fixed guards are secured by welding or fasteners like screws and nuts, and are used where access to the hazard is not required during normal operation.
On a shop floor, fixed guards are the primary engineering control for mechanical hazards like rotating shafts, belt drives, nip points, and crushing areas where routine access is not needed. They are applied to conveyors, presses, grinders, and other machinery to prevent contact with moving parts. Guards are typically bolted or welded in place, with openings sized to prevent reach based on distance guarding principles. They are integrated with lockout procedures for maintenance, and their removal without tools is a compliance violation. Fixed guards are preferred over movable or interlocked guards when access is infrequent, as they are less dependent on human behavior.
Fixed guards made easily removable or defeated by adding quick-release features like hand-knobs or clips, violating the requirement that removal requires tools.
Inadequate coverage or poor geometry where gaps or openings allow reach to the hazard, failing to prevent access from all directions.
Removal of fixed guards for maintenance or jam clearing without lockout and reinstallation, leading to unguarded operation and lockout violations.