CONTROL SYSTEM FOR A NUCLEAR POWER PRODUCING UNIT

摘要

A control system for a nuclear power producing unit comprising a pressurized coolant reactor that has a once-through steam generator provided with feedwater supply means is disclosed. A turbine-generator supplied with steam from the steam generator and means for maintaining a flow of coolant through the reactor and steam generator that characterises the invention also has means for generating a feed forward control signal proportional to the desired power output of the power producing unit, a second means for adjusting the reactor heat releases and a third means for adjusting the rate of flow of feedwater to the steam generator. The second and third means are solely responsive to and operated in parallel from the food forward control signal whereby the reactor heat release and the rate of flow of feedwater to the steam generator are each maintained in a discrete functional relationship to the food forward control signal.