Chemical and Volume Control System

Highly optimized polystyrene macroporous resins that provide the highest possible performance in nuclear applications.

High-Performance Resins for Chemical and Volume Control Systems

High-Performance Resins for Chemical and Volume Control Systems

The Chemical and Volume Control System (CVCS) is an auxiliary support system that serves to clean a portion of the Reactor Coolant System (RCS), maintain the correct concentration of boron, and adjust the volume of RCS inventory as needed to maintain the operating level in the pressurizer. It includes an ion exchange deep bed system to control pH, remove contaminating ions and radionuclides, and reduce boron concentration when needed. Mixed beds are normally used; some plants also employ a cation or anion exchange resin bed. High-quality Nuclear Grade Gravex® resins have been used for more than 25 years in each bed location. Gravex resins are recognized as very high quality, exceeding nuclear grade specifications. Our commitment to product development has led to innovative products beneficial to plant operations.

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High-Performance Resins for Chemical and Volume Control Systems

About Our High-Performance Resins

  • Selective for the soluble species of the radionuclide metals
  • Anion and cation products may be layered over the mixed beds
  • Most uniformly blended products available
  • Have the same consistent cation to anion ratio in every package
  • Provide the highest possible performance in nuclear applications

Product Selection

  • Gravex GR-1-5 NG, GR-2-17 NG, GR-3-17 NG, GR-7-17 NG, GR-4-17 NG perform the normal functions of reactor water treatment and pH control

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