Operation at power

6.4.1 Control

Over the upper part of the reactor power range, some of the parameters are under automatic control. When outside the range of auto control, the plant is con­trolled manually by the operator who uses the indi­cations to exercise control when the auto control is out of range or has failed.

It should be noted that not all CEGB nuclear stations are provided with automatic control, but it is provided on all the AGRs.