反应堆稳定性問題是反应堆动态理論中重要問題之一。設計反应堆时,通常总是使得反应堆具有固有的稳定性。以便当受到扰动以后,反应堆参数能自动恢复平衡。此时外部控制系統的任务就可能減到最輕,仅用于补偿长期的反应率变化(例如燃耗、中毒等)或者在起动过程等情况下起作用。影响反应堆稳定性的物理因素是多种多样的,象温度、压力、毒素、緩发中子、放射性衰变热量、結构特性、机械和水力效应等。具有負反应率温度系数的反应堆,在一定 Reactor stability is one of the most important problems in the theory of reactor dynamics. When designing a reactor, it is usually always inherent to the reactor. So that when disturbed, the reactor parameters will automatically rebalance. At this point external control system may be the task of minimizing, only to compensate for long-term changes in response rate (such as fuel consumption, poisoning, etc.) or in the case of start-up process and so on. The physical factors that affect the stability of the reactor are varied, such as temperature, pressure, toxins, delayed neutrons, decay heat, structural properties, mechanical and hydraulic effects. Reactors with a negative temperature coefficient of reaction rate are certain