Which device is not considered an OSHA-acceptable method for safeguarding the point of operation of mechanical power presses?

In the context of mechanical power presses and their safeguarding methods, recognizing the differentiation between acceptable and non-acceptable devices is crucial.

Fixed barriers, light curtains, and two-hand control devices are all recognized by OSHA (Occupational Safety and Health Administration) as legitimate methods for protecting workers from the hazards presented at the point of operation.

Fixed barriers are permanent structures designed to prevent access to the danger zone during operation. Light curtains use optical sensors to create an invisible barrier; if an object (like a hand) breaks the light beam, the press can shut down. Two-hand control devices require the operator to use both hands to initiate the machine’s cycle, ensuring that their hands are out of the danger zone.

On the other hand, swipes are not an accepted method for safeguarding machines under OSHA regulations. Swipes generally refer to a way to control or manage access, often not providing consistent or reliable protection against the mechanical hazards posed by power presses. Their lack of structural integrity and failure to meet the necessary safety standards makes them unsuitable as a safety device in this context.