Abstract:
Aiming the needs of long-life core,this paper studied the selection of both integrated type burnable poisons and separated type burnable poisons,and also studied the matching of different types of burnable poisons.The results show that:the burnable poisons with lower burnup rate,such as erbium and hafnium,are more suitable for the integrated type;the burnable poisons with higher burnup rate,such as gadolinium and boron,are more suitable for separated type;and the performance of long-life core can be enhanced through a proper matching of burnable poisons with low and high burnup rate.
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