Relay control of the Universities´ research reactor

The 2-zone core of the Universities´ research reactor was simulated on an analogue computer, and the average flux signal from the analogue was used to drive an `on-off¿ autocontroller with a deadband. On completion of the analogue tests, the controller was installed on the reactor, and the same series of tests repeated. Good agreement was obtained between the analogue and reactor results, and the equipment is now in permanent use on the plant.