Which safeguarding strategy is prohibited for a full-revolution press?

A full-revolution press operates with a single continuous motion throughout its cycle, which can pose significant hazards to operators. The use of presence-sensing devices is prohibited for this type of equipment because these devices rely on detecting the operator's presence before allowing the press to operate. However, with a full-revolution press, the risk exists that the press could complete its cycle even if an operator enters the danger zone after the press has been triggered, creating a severe risk of injury.

In contrast, fixed guards, two-hand control devices, and adjustable guards are generally accepted safeguarding strategies. Fixed guards provide a permanent barrier, ensuring that no part of the body can enter the danger zone during operation. Two-hand controls require the simultaneous use of both hands to operate the machine, which keeps the operator's hands away from the machine's danger area while it's in operation. Adjustable guards can also be a viable option, provided they are implemented correctly and designed to ensure the operator's safety.

Thus, the prohibition of presence-sensing devices for full-revolution presses is specifically due to the inherent dangers associated with their operation, where ensuring safety through other strategies is paramount.