Power Generation Systems — The Right Resin Choice GRAVEX Macroporous Nuclear Grade Resins ® GR-1-5 NG, GR-2-17 NG, GR-3-17 NG, GR-7-17 NG, GR-4-17 NG These Gravex Nuclear Grade Ion exchange mixed bed in a 2 cation:1 anion volume ratio. Gravex resins are polystyrene, macroporous type resins. They mixed beds are the most uniformly blended products have been regenerated and processed to provide the highest available and have the same consistent cation to anion possible performance in nuclear applications. GR-1-5 NG ratio in every package. A stoichiometric mixed bed and GR-2-17 NG are fully tested and certified. Our unique version with 7Li+ form cation is GR-4-17 NG. blending process creates the less separable GR-3-17 NG TYPICAL PROPERTIES Product GR-1-5 NG GR-2-17 NG; GR-7-17 NG (7Li form) GR-3-17 NG GR-4-17 NG Type SBA Type 1 SAC SAC/SBA SAC/SBA Matrix Styrene-DVB Macro Styrene-DVB Macro Styrene-DVB Macro Styrene-DVB Macro Functional Group Quaternary Ammonium Sulfonic Acid Ionic Form OH- H Sulfonic Acid / Quaternary Ammonium + H / OH- Sulfonic Acid / Quaternary Ammonium 7 + Li / OH- Total Exchange Capacity (meq/mL) 0.9 (min) 2.1 (min) 2.1 / 0.9 2.1 / 0.9 Ionic Conversion 97% OH (min) 99% H / Li (min) 99% / 97% (min) 99% / 97% (min) 3% CO3 (max) 3% CO3 (max) 3% CO3 (max) 0.1% Cl (max) 0.1% Cl (max) 0.1% Cl (max) 0.1% SO4 (max) 0.1% SO4 (max) 0.1% SO4 (max) + 7 + Water Retention 58–68% 43–49% 43–49% / 58–68% 43–49% / 58–68% Whole Bead 95% (min) 95% (min) 95% (min) 95% (min) average g/bead 350 (min) 350 (min) 350 (min) 350 (min) > 200 g/bead 95% (min) 95% (min) 95% (min) 95% (min) > 1,190 µm 2% (max) 2% (max) 2% (max) 2% (max) < 300 µm 0.2% (max) 0.2% (max) 0.2% (max) 0.2% (max) 670 ± 120 µm 600 ± 75 µm 600/670 ± 75/120 µm 600/670 ± 75/120 µm Friability Particle Size Harmonic Mean Size Applications — Reactor Coolant Treatment Similarly the GR-4-17 NG replaces the GR-4-9 NG during (CVCS, chemical and volume control system) full power operation. Each product continues to perform This series of macroporous Gravex resins is designed to the normal functions of reactor water treatment and pH remove fine particulate radionuclides including isotopes control. The GR-7-17 NG, 7Li form cation component may of Co, Ni, Fe, & Ag. The cation GR-2-17 NG by itself and be used to extend the bed life. as a component of the mixed beds, is also selective for the soluble species of the radionuclide metals. These Gravex products are used for cleanup after outages to help maintain plant restart schedules. The anion and cation products may Radwaste Treatment — The GR-1-5 NG, GR-2-17 NG, and GR-3-17 NG products are also useful for removing soluble and fine particulate radionulides from liquid radwaste. be layered over either of the mixed beds. The GR-3-17 NG Spent Fuel Pools — GR-3-17 NG is chemically and may be used in place of the GR-3-9 NG during full power physically resistant to the aggressive environment in spent operation to provide ongoing removal of fine particulates. fuel pools.

GRAVEX® Macroporous Nuclear Grade Resins GR-1-5 NG, GR-2-17 NG, GR-3-17 NG, GR-7-17 NG, GR-4-17 NG GR-1-5 NG – PRESSURE DROP GR-3-17 NG, GR-4-17 NG – PRESSURE DROP kPa/m kPa/m 90 70 10 C 0 80 70 200 C 50 60 Pressure Drop 100 C 60 30 C 0 50 Pressure Drop 40 200 C 40 300 C 30 30 20 20 10 10 0 0 0 10 20 30 40 50 60 m/h 0 10 20 30 40 60 m/h 50 Flow Rate Flow Rate IMPURITY – MG/DRY KG (MAX) GR-2-17 NG, GR-7-17 NG – PRESSURE DROP Impurity – mg/dry kg (max) GR-1-5 NG GR-2-17 NG GR-7-17 NG Na 20 50 Fe 50 50 40 Cu 10 10 30 Pb 10 10 20 Al 50 50 Ca 50 50 Mg 50 50 K 50 50 Zn 50 50 kPa/m 80 10 C 0 70 60 Pressure...