Neutronic reactor
AssigneeU.S. Energy Research & Development Administration
InventorsCharles W. J. Wende, Dale F. Babcock, Robert L. Menegus
Life of this patent
Estimating the term…
Abstract
A nuclear reactor includes an active portion with fissionable fuel and neutron moderating material surrounded by neutron reflecting material. A control element in the active portion includes a group of movable rods constructed of neutron-absorbing material. Each rod is movable with respect to the other rods to vary the absorption of neutrons and effect control over neutron flux.
Claims7
A neutronic reactor comprising a core consisting of a plurality of elongated, parallel fuel elements, perpendicular to a midplane of the reactor, containing thermal-neutron-fissionable material and provided with an inlet at one end and an outlet at the other end for coolant, and a plurality of elongated control elements, parallel to each other and to the fuel elements, each consisting of a housing, and a group of control rods which are separately translatable within their housing, each of said groups containing at least one control rod which is substantially shorter than the fuel elements and is located so that its midpoint is downstream, with respect to the flow of coolant through the fuel elements, from the said midplane of the reactor, the remainder of the control rods within a group being of substantially the same length as the fuel elements, said fuel elements and control elements being symmetrically disposed within a body of moderator material.
A neutronic reactor comprising a core consisting of a plurality of elongated, parallel fuel elements containing thermal-neutron-fissionable material, and a plurality of elongated control elements, parallel to each other and to the fuel elements, each consisting of a housing and a group of control rods separately translatable within their housing, said control elements being symmetrically arranged in concentric rings about a central control element within a body of a moderator material, all control elements within each concentric ring being connected in gangs, means for operating all control rods occupying the same position in each control element within a ring simultaneously and for sequentially withdrawing the said gangs of control rods from the reactor.
Dependencies are inferred from the claim text.