Induced nuclear reactions: processes – systems – and elements – With control of reactor – By movement of control element or by release of neutron...
Patent
1995-03-13
1997-10-14
Behrend, Harvey E.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By movement of control element or by release of neutron...
376267, G21C 706, G21C 1900
Patent
active
056779380
ABSTRACT:
The present invention relates to method of fueling and operating a nuclear reactor core. Fueling the nuclear reactor core for a power operation cycle includes the steps of designating a central core region, a buckled core region and a peripheral core region, placing at least two fuel assemblies of relatively high reactivity in the fuel cells in the central core region and placing fuel assemblies of relatively low reactivity in the cells in the peripheral core region. The invention further includes operating the nuclear reactor core throughout a cycle of operation by the steps of designating at least one network of control rods, each network comprising approximately one-fourth of the control rods in the core, the selected networks being substantially evenly spread throughout the core, selecting a desired interval for insertion of the selected networks of control rods during the power operation cycle, actuating a substantial portion of a first selected network of control rods to positions at least partially inserted into the core and actuating a substantial portion of all remaining control rods to positions substantially fully withdrawn from said core for the desired interval, and repeating the actuation step, but alternating between selected networks of control rods, for each remaining desired time interval for the duration of the nuclear reactor power operation cycle.
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Behrend Harvey E.
PECO Energy Company
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