Installed mechanical safeguards are required around all these machines except

Installed mechanical safeguards are required around all these machines except

• A. Lathe
• B. Trajectory Zone
• C. Grinder
• D. Milling machine

Answer: (B)

Machine guarding protects workers from the moving parts and the point of operation of equipment. Lathes, grinders, and milling machines all have rotating spindles and cutting tools that can cause contact, entanglement, or being struck by flying chips, so they require installed guards, barriers, or enclosures to prevent access during operation. The trajectory zone, on the other hand, is a defined area outlining where moving parts travel, not a machine itself. Since it isn’t a machine that needs physical guarding, you don’t install a mechanical safeguard around it; instead, you manage that zone with safe operating practices, proper distances, and other controls to prevent entering the area during operation.

Machine guarding protects workers from the moving parts and the point of operation of equipment. Lathes, grinders, and milling machines all have rotating spindles and cutting tools that can cause contact, entanglement, or being struck by flying chips, so they require installed guards, barriers, or enclosures to prevent access during operation. The trajectory zone, on the other hand, is a defined area outlining where moving parts travel, not a machine itself. Since it isn’t a machine that needs physical guarding, you don’t install a mechanical safeguard around it; instead, you manage that zone with safe operating practices, proper distances, and other controls to prevent entering the area during operation.