Chemical and Volume Control System

CVCS for short, this system in a PWR plant is important for maintaining reactor water chemistry.  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 well recognized to be of the highest quality, exceeding nuclear grade specifications.  Our commitment to product development has led to innovative products beneficial to plant operations.  

	Gravex standard Nuclear Grade anion, cation, and mixed bed for efficient CVCS performance
	Ultra low chloride anion to limit leachable chlorides to the lowest achievable level
	High crosslinked cation and mixed bed with higher capacity and greater stability
	Lithium-7 form cation and mixed bed products with standard or high crosslinked cation

Graver Product Selection

Product	Application Area
Gravex GR 1-9 NG (OH)	Nuclear Grade low chloride anion
Gravex GR 1-9 US Ultra (OH)	Nuclear Grade Ultra low chloride anion
Gravex GR 2-0 NG (H)	Nuclear Grade cation
Gravex GR 2-16 NG (H)	Nuclear Grade high capacity cation
Gravex GR 3-9 NG (H/OH)	Nuclear Grade mixed bed
Gravex GR 3-16 NG (H/OH)	Nuclear Grade mixed bed with high capacity cation
Gravex GR 4-9 NG (Li7/OH)	Nuclear Grade mixed bed with lithium-7 form cation
Gravex GR 7-16 NG (Li7)	Nuclear Grade high capacity lithium-7 form cation
Gravex GR 4-7 NG (Li7/OH)	Nuclear Grade mixed bed with high capacity lithium-7 form cation