control rod shaft assembly

control rod shroud assembly

absorber rod control gas

absorber-type control rod

absorbing control rod

acceptable control rod reactivity

automatic control assembly

automatic control rod

auxiliary control rod

blade type control rod

boron carbide control rod

boron-loaded control rod

bottom-entry control rod

burn-up control assembly

BWR control rod

BWR control rod drive

cadmium control rod

cluster control rod

cluster type control rod