Reach through openings
Smaller apertures generally permit closer placement, while larger openings require greater separation. Apply the relevant safety-distance table to the opening shape and body part.
Reach over a guard
Guard height, hazard height and horizontal distance interact. Nearby structures, stored items or machine frames can create climbing or standing points that invalidate the layout.
Reach under and around
Floor gaps, uneven floors, conveyor openings and corners can permit access. Inspect the complete perimeter from realistic body positions.
Protective-device distance
Light curtains and scanners require a calculated distance based on approach speed, total system response, machine stopping time and device-specific factors.
Stopping-time measurement
Use representative machine conditions and account for sensor, logic, output, drive and mechanical stopping time. Recheck where wear or load can increase stop time.
Material openings
Product passages can become access routes. Use tunnels, restricted apertures, distance, flaps, sensing or controlled transfer arrangements based on the product and hazard.
Project checklist
Points to confirm
- Opening dimensions measured
- Hazard position defined
- Reach over assessed
- Reach under assessed
- Climbing aids removed
- Stopping time measured where relevant
- Product openings reviewed
- Future layout changes considered
How Oxford Machine Guarding can help
We can survey the equipment, define the guarding and safety-system scope, develop the design, supply and install the solution, and provide testing and handover records appropriate to the agreed project boundary.
This guide provides general technical information. It is not a substitute for a machine-specific risk assessment, legal advice or verification by the responsible dutyholder.
