Kontrolstænger

Kontrolstænger, often translated as control rods, are crucial components in nuclear reactors. Their primary function is to control the rate of nuclear fission reactions. They are typically made of materials that absorb neutrons, such as cadmium, boron, or hafnium. By inserting or withdrawing these rods from the reactor core, operators can regulate the number of neutrons available to cause further fission.

When control rods are inserted fully into the core, they absorb a significant number of neutrons, effectively slowing down or stopping the chain reaction. Conversely, withdrawing the rods allows more neutrons to interact with the nuclear fuel, increasing the reaction rate and thus the power output of the reactor. This precise control is essential for maintaining stable reactor operation, managing power levels, and for safely shutting down the reactor in an emergency.

The design and material of control rods are carefully chosen to ensure their effectiveness and durability under the extreme conditions within a reactor core, including high temperatures and intense radiation. Their operation is a key aspect of nuclear reactor safety systems, providing a reliable method to manage the nuclear process.