For over a decade, Rotork IQ actuators have proved reliable at The Cardiff Bay Barrage in Wales. The Barrage, a project that took over five years to build at a cost of GBP 220 million, is also an environmental protection mechanism designed to regulate the water level in the 500 acre fresh water Cardiff Bay and to isolate it from the sea by preventing the ingress of sea water. Since the barrage was first completed over ten years ago, the enormous butterfly valves in the underground pipework network that controls the environmental protection process have been reliably operated by Rotork IQ actuators. The actuators operate penstocks to allow fish in and out of a fishtrap, where they are examined by the Environment Agency. The operation of the fishpass actuators is controlled by a SCADA system in the Barrage Control Room, which is backed up by a motor control centre in the unlikely event of a fault.