The control rod system and soluble boron control the core neutron flux. Pressurizer heater and spray control the primary system pressure. On the secondary side, steam output is controlled by the turbine control valve and steam dump system. Steam generator water level is controlled by the feedwater system. During the automatic control mode, they work in a synchronized way so that transition to stabilized conditions will be achieved smoothly.
Operation is defaulted to the automatic mode.
By entering a new set point, activating the manual action and closing the window, that system will then run in the manual mode. In the attached Windows displayed mimic of the Maanshan model, a single loop is at the left side and the other two loops are combined at the right side. Design of the panels in the mimic is limited to those critical to operations and emergency functions. The status is indicated by color consistent with the control room panel. Control rod motion is animated.