The system should be located and designed to prevent the accidental manipulation of control and input devices that could result in changes to the status of the system functions, components, or data.
Additional Information:
Controls may be recessed, shielded, or otherwise surrounded by physical barriers. The control should be entirely contained within the envelope described by the recess or barrier. Controls may be covered or guarded with movable (e.g., hinged) barriers. Safety or lock wires should not be used. When a movable control guard is in the open position, it should not interfere with the operation of the guarded control or other adjacent controls. Conventional controls may be provided with interlocks. The interlocking controls may require: (1) extra movement (e.g., a side movement out of a detent position or a pull-to-engage clutch), or (2) prior operation of a related or locking control.