Assuming that you are operating the reactor manually you should consider the following interactions between systems:
Raising reactor power will cause primary temperature to rise and will yield higher steam production. Lowering the reactor power will have a reverse effect.
Raising primary cooling flow WILL NOT change the temperature in the primary. Instead, reactor will react with higher power to more or less maintain the temperature. Therefore:
- RCP flow can be treated as another means of changing the reactor power (along with rods and boric acid). More flow will cause more power and more steam production.
- In order to reduce primary temperature after cooling flow is raised, reactivity must be reduced with other reactor controls to stop the power raise.
Opening the turbine valve more, will cause pressure to drop and reactor power to raise to meet a higher steam demand. Feedwater temperature after an initial drop will raise back again.