control rod guide tube

control rod guide

control rod guide bushing

control rod guide plate

control rod guide structure

control rod guide structure underwater removal tool

control rod guide thimble

control rod guide tubes and bundles

control-rod guide

absorber rod guide tube

hydraulic cylinder rod seal guide

in-core guide tube seal

absorber rod control gas

absorber-type control rod

absorbing control rod

acceptable control rod reactivity

all-control-rod-in condition

automatic control rod

automatic gain control tube