The fencing systems used in the machines belong to the  Physical Protection Devices group and must be selected, manufactured and  positioned in accordance with the EN ISO 14120 standard. These physical  protection devices are available in fixed and movable types and should be  designed according to the same standard.

There should be locking devices in certain parts of the  physical protection devices (doors, passages, opening-window, etc.). The  requirements and details of these locking devices are determined by the EN ISO  14119 standard.