All reactors are equipped with mechanisms to regulate the temperature to prevent both overheating and overcooling and in normal operation excessive temperature is not a risk. Damaged reactor may however lag behind, causing temperature to fall or rise above rated operating threshold.

Excessive temperature poses a great risk to the spaceship. Symptoms of overheat include:

Methods of preventing overheat:

  • Maintaining fuel rod actuators in proper working order.
  • Venting excessive remass with simultaneous RCS burns.