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U.S. Department of Energy
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METHOD FOR COMPENSATING SAMARIUM IN A NUCLEAR REACTOR

Patent ·
OSTI ID:4049154

When a thermal nuclear reactor is initially brought into operation, an excess reactivity of approximately 1% that is built-in provides for the period during which the steady state Sm/sup 149/ concentration is being reached. In order to compensate the excess reactivity from the begining a mass of natural Sm (containing 13.8% Sm/sup 149/) substantially equal to about seven times the mass of steady state Sm/sup 149/ is-provided in the core. If in a reactor U0/sub 2/ is used as a fuel, a uniformly distributed quatity of 0.06% by weight of Sm/sub 2/ O/sub 3/ to U/sup 235/O/sub 2/ is required. (NPO)

Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-15-015251
OSTI ID:
4049154
Report Number(s):
FR 1206123
Country of Publication:
France
Language:
English

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