Main contactor JGC Ltd of Halkirk, Caithness, selected Halifax Fan Ltd to supply the four fans required.

"We have dealt with Halifax for fans for nuclear applications for many years now," said JGC Project Director Tim O’Brien. "We were confident, based upon past experience, that Halifax could meet our demanding specification competitively. In the end, works testing went smoothly and delivery was made on time."

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Malcolm Staff, Managing Director of Halifax Fan, said: "At 69 ins and 78 ins impeller diameters and weighing 8.5 tonnes each, these are the largest nuclear specification gas-tight fans we have built to date. It meant manufacturing our largest ever single piece casings and the fans have been fitted with our own gastight shaft seal arrangement. We not only supplied the fans, we also supplied Danfoss variable frequency inverter drives for the fans, selected on the basis of their proven reliability and high efficiency. This placed the onus on Halifax to ensure reliable, efficient operation of the fan system as a whole, with correctly rated inverter drives, before the equipment arrived on site."