About contol rods used in boiling water reactor

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SUMMARY

Cross-shaped control rods are utilized in boiling water reactors (BWRs) to effectively navigate through the gaps between fuel assembly channels. This design allows for optimal insertion and removal, enhancing reactor safety and efficiency. Additionally, a velocity damper is integrated at the lower portion of the control rod to mitigate dropping velocity during emergencies. For further technical details, refer to the document available at this link.

PREREQUISITES
  • Understanding of boiling water reactor (BWR) design principles
  • Knowledge of control rod functionality and materials
  • Familiarity with reactor safety mechanisms
  • Basic principles of nuclear physics and thermal dynamics
NEXT STEPS
  • Research the design and operation of control rods in nuclear reactors
  • Study the role of velocity dampers in reactor safety systems
  • Explore the differences between cruciform and cylindrical control rod designs
  • Investigate the thermal dynamics involved in boiling water reactors
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Nuclear engineers, reactor operators, safety analysts, and students studying nuclear reactor technology will benefit from this discussion.

kumar1405
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why Cross shaped contol rods used in boiling water reactor?
thanks in adavance for answer .
 
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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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