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Questions and Answers
What is the primary function of the Chemical and Volume Control System (CVCS)?
What is the primary function of the Chemical and Volume Control System (CVCS)?
What is removed from the reactor coolant by the CVCS?
What is removed from the reactor coolant by the CVCS?
What is the purpose of the Zinc Addition System (ZAS)?
What is the purpose of the Zinc Addition System (ZAS)?
What is the function of the demineralizers in the CVCS?
What is the function of the demineralizers in the CVCS?
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What is the purpose of the reactor makeup water in the CVCS?
What is the purpose of the reactor makeup water in the CVCS?
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What happens during a loss of coolant accident (LOCA)?
What happens during a loss of coolant accident (LOCA)?
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What is the purpose of the CVCS in terms of reactor coolant purification?
What is the purpose of the CVCS in terms of reactor coolant purification?
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What is the function of the CVCS in terms of reactivity control?
What is the function of the CVCS in terms of reactivity control?
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Study Notes
Chemical and Volume Control System (CVCS)
- The CVCS provides chemical and volume control of the reactor coolant system (RCS) to ensure safe and efficient operation.
Functions of CVCS
- Reactor coolant purification, including removal of fission products, activation products, and impurities.
- Chemistry control to minimize corrosion of the RCS.
- Reactor coolant inventory regulation through addition of reactor makeup water.
- Reactivity control by adjustment of boron concentration.
- Seal water injection.
- Emergency core cooling (High Head Safety Injection).
Importance of CVCS
- Removes radioactive products and impurities through demineralizers to keep the RCS within acceptable limits.
- Reduces corrosion through chemical control.
- Supplies reactor makeup water needed due to minor leaks, evaporation, and RCP seal injection.
- Adjusts boron concentration of the RCS during all phases of plant operation.
- Provides an emergency boration path.
Interconnected Systems
- The Zinc Addition System (ZAS) adds soluble zinc to the RCS to reduce stress corrosion cracking and displace Cobalt-60.
- The ZAS interconnects with the CVCS system.
Emergency Response
- During a loss of coolant accident (LOCA), the CVCS provides an immediate source of high-pressure water to keep the reactor core cooled.
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Description
This quiz covers the functions and importance of the Chemical and Volume Control System (CVCS) in nuclear reactors, including reactor coolant purification and inventory regulation. Learn about the roles of CVCS in maintaining reactor safety and efficiency.
