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Ion Exchange Resins for Nuclear Power Plants

Ensure Ultrapure Water and Enhance Nuclear Safety with Ion Exchange Resins

Ion exchange resins are used in multiple systems within nuclear power plants to effectively remove specific contaminants. The unique chemistry requirements of each system guide the selection of the most suitable resin. Xylem offers ion exchange resins that are processed to meet the individual specifications of each nuclear facility. 

Resins are used in various plant areas including the advanced liquid processing system and condensate polishers. The resins found in the plant’s steam cycle primarily remove dissolved contaminants and produce ultrapure water for reuse. The primary resin used in this application is a mixed bed that contains both anion and cation resins. For example, the cation resin is often a high-capacity, highly crosslinked type, such as C-471C H or C-661C H. 

Different types of resins are utilized, including cation, anion, and mixed bed resins, as well as specialized forms like borated and lithiated resins. 

Nuclear Power Plant Systems that Use Ion Exchange Resins: 

  • Advanced Liquid Processing System (ALPS) – removes radioactive materials from contaminated water 
  • Chemical and Volume Control System (CVCS) – cleans part of the Reactor Coolant System and helps to maintain boron concentration 
  • Condensate Polishers – removes dissolved contaminants to create ultrapure water 
  • Deborating Beds – boron reduction 
  • Fuel Pool Demineralizers – removes contaminants in the fuel pool 
  • Lithium Removal Beds – lithium removal 
  • Radwaste Demineralizers – removes contaminants from radioactive water in the radwaste system 
  • Reactor Water Cleanup – maintains reactor water quality 
  • Stator Cooling - cleans water used to keep the copper stator bars cool 
  • Steam Generator Blowdown – cleans water removed from the plant’s steam cycle

Ion Exchange Resins for Nuclear Power Plants Callout