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ORNL-5388 - the Molten Salt Energy Technologies Web Site

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6-37<br />

The effect upon <strong>the</strong> nuclear contribution of adding advanced converters with <strong>the</strong> LWRS<br />

is shown in Fig. 6.2-23 for <strong>the</strong> high-cost U308 supply. The HWR has <strong>the</strong> largest effect,<br />

increasing <strong>the</strong> nuclear con,$ribution of <strong>the</strong> system to approximately 810 GWe in year 2035.<br />

The larger effect of <strong>the</strong> advanced converters in this option compared to <strong>the</strong>ir effect in<br />

HEDL 7805490.57<br />

Fig. 6.2-24. Utilization and Movement of Fissile Material in an LWR Nuclear System<br />

Minimizing <strong>the</strong> Production and Use of Plutonium (Case 5UL, High-Cost U308 Supply) (Year<br />

2035).<br />

<strong>the</strong> throwaway option for this ore supply is primarily due to <strong>the</strong> fact that reprocessing is<br />

available in this case. The availability of reprocessing effectively increases <strong>the</strong> amount<br />

of U3O8 available after <strong>the</strong> advanced converters are introduced and <strong>the</strong>refore increases <strong>the</strong><br />

amount of U308 upon which <strong>the</strong> advanced converters can employ <strong>the</strong>ir resource savings.<br />

The utilization and movement in year 2035 of fissile material per GWe of installed<br />

capacity for <strong>the</strong> system utilizing LWRs only (Case 5UL) is shown in Fig. 6.2-24.<br />

U& consumption is approximately 36 ST U&/GWe.<br />

is supplied with approximately 170 kg of fissile plutonium in fresh fuel per GWe of installed<br />

capacity and it comprises 13% of <strong>the</strong> installed capacity. This can be compared to <strong>the</strong><br />

classical case of plutonium recycle in which approximately 54% of <strong>the</strong> installed capacity must<br />

*The movement of fissile material in all cases is a function of time, Fur<strong>the</strong>rmore, it is<br />

affected by first-core charges and last-core discharges (which are included in Fig. 6.2-24<br />

and subsequent similar figures). The fissile balance for a decaying (or growing) system<br />

differs significantly from that of a static system.<br />

*<br />

The annual<br />

The LWR transmuting plutonium to 233U

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