control rod guide

control rod guide bushing

control rod guide structure

control rod guide structure underwater removal tool

control rod guide thimble

control rod guide tube

control rod guide tube seal

control rod guide tubes and bundles

control-rod guide

absorber rod control gas

absorber-type control rod

absorbing control rod

acceptable control rod reactivity

all-control-rod-in condition

automatic control rod

automatic-control rod

auxiliary control rod

black control rod

black-type control rod