ORNL-TM-7207 - the Molten Salt Energy Technologies Web Site

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ORNL-DWG 804266 ETD
FIRST FUEL
4
5 0.0
0 1 2 3
OPERATING TIME (yri
4 5
Fig. 5. Time variation of core reactivity in a once-through BMSR
operating at 75% capacity factor.
no
OHNL -DVG 80-4267 FVD
I I I
1 0 20 30
OPERATING TIME (vr)
Fig. 4. Conversion ratio vs time,
makeup fuel. The lifestme average conversion ratio for the 30-year fuel
cycle is ekose to 0.8.
The schedule of fuel additions, including the initial critical load-
ing for a 1-GWe plant operating at a 75% capacity factor is shown in Table
17. This table also includes the quantities of the U308 and separative
work required to supply the fissile materialie ~hus, the lifetime re-
quirement would be about 2688 tons of U308 i f m credit were allowed for
the end-of-life fissile in~entory. However, uranium is readily r&coV~B"-
able from this fuel in a pure and reusable fom as LEge The recovered
uranium would have to be reenriched, either by isotopic separation or by
addition of high-enrichment fuel, before it could be reused in another
DMSR, but reuse in some manner might be preferable to discarding the