An identification label needs to be affixed to all substation doors, according to the layout design. 

Warning signs must be properly affixed to all substation doors, in order to alert site visitors and staff of the dangers and minimum safety rules before entering the substations.

Each substation needs to have proper signage that indicates that the emergency stop button (ESB) is inside the substation, or if not, informs where the ESB is located on the site.  The correct signage needs to be as below and the emergency phone number of the DNO needs to be added to inform them that the plant must be shut down.