Definitions for "Control rod"
Keywords:  reactor, fission, bellows, rod, boron
A movable part of the reactor core that is adjusted to regulate the degree of fuel fissioning in the core.
The rounded rod running up the middle of the shutter, used to tilt the louvre blades up and down.
Devices attached to the expansion joint with the primary function of distributing movement between the two bellows of a universal joint.