R 408.12646 Powered clamping device.

Rule 2646. An operator of a powered clamping device that is used for holding a workpiece shall be protected by employing 1 of the following methods: (a) Guarding or adjusting so that the opening between the clamp and workpiece insertion is not more than 1/4 of an inch. (b) Two-hand controls furnished to, and used by, each operator. (c) Providing a single control for each operator if the operator is remote from the point of operation or pinch point. (d) A means which would prevent the clamping device from closing while the employee is in the point of operation or pinch point.