Which safeguarding method may require the monitoring of top-stop overrun beyond a "normal limit reasonably established by the employer"?

The safeguarding method that may require the monitoring of top-stop overrun beyond a "normal limit reasonably established by the employer" is associated with Type B gates. Type B gates specifically provide protection by preventing access to hazardous areas during the operation of machinery. In applications where precise control and monitoring of machinery behavior are critical, such as managing top-stop overruns, Type B gates are used for enhanced safety.

In practice, the monitoring ensures that in the event of a malfunction or unexpected behavior, operators can take preventive measures before any incident occurs. This method helps in mitigating risks associated with machinery that can exceed defined operation parameters, thereby ensuring a safer work environment.