About contol rods used in boiling water reactor

In summary, control rods are essential safety features in a boiling water reactor. They are used to control the rate of fission reactions by absorbing neutrons and limiting the power output of the reactor. They are necessary for the reactor to function properly and are controlled by a mechanism outside of the reactor core. Regular maintenance and testing of control rods are crucial to prevent accidents from occurring.
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kumar1405
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1
why Cross shaped contol rods used in boiling water reactor?
thanks in adavance for answer .
 
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  • #2
kumar1405 said:
why Cross shaped contol rods used in boiling water reactor?
thanks in adavance for answer .

The control rods are composed of blades in a shape of cruciform in order to move through the gaps formed between channels of fuel assemblies.
A velocity damper is also provided at the lower portion
of the control rod
to slow down the dropping velocity in case of a accident.
for details one can visit: http://atominfo.ru/files/fukus/npp2.pdf
 
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thank you for your valuable answer .
 
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Related to About contol rods used in boiling water reactor

1. What are control rods used for in a boiling water reactor?

Control rods are used to control the rate of fission reactions in a boiling water reactor. They contain materials, such as boron or cadmium, that absorb neutrons and slow down or stop the chain reaction that produces heat in the reactor.

2. How do control rods work in a boiling water reactor?

Control rods are inserted into the reactor core to absorb neutrons and limit the number of fission reactions taking place. They can be raised or lowered to control the power output of the reactor. When fully inserted, they can completely shut down the reactor if necessary.

3. Are control rods necessary for a boiling water reactor to function?

Yes, control rods are an essential safety feature in a boiling water reactor. They help regulate the power output of the reactor and prevent it from overheating or becoming unstable. Without control rods, the reactor could potentially experience a runaway reaction, leading to a nuclear meltdown.

4. How are control rods controlled in a boiling water reactor?

Control rods are controlled by a mechanism located outside of the reactor core. This mechanism allows operators to raise or lower the control rods as needed to maintain a stable and safe level of power production. In some reactors, the control rods can also be automatically lowered in case of an emergency.

5. What happens if a control rod becomes stuck in a boiling water reactor?

If a control rod becomes stuck or fails to lower into the reactor core, it can lead to an increase in power production and potential overheating of the reactor. This is why regular maintenance and testing of control rods are crucial to ensure their proper functioning and prevent accidents from occurring.

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