Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Plural fuel segments or elements
Patent
1985-10-04
1989-04-04
Terapane, John F.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Plural fuel segments or elements
376439, 376443, 376438, G21C 334
Patent
active
048184799
ABSTRACT:
The invention relates to a nuclear reactor spacer grid member for use in a liquid cooled nuclear reactor and to a ductless core component employing a plurality of these spacer grid members. The spacer grid member is of the egg-shell type and is constructed so that the walls of the cell members of the grid member are formed of a single thickness of metal to avoid tolerance problems. Within each cell member is a hydraulic spring which laterally constrains the nuclear material bearing rod which passes through each cell member against a hardstop in response to coolant flow through the cell member. This hydraulic spring is also suitable for use in a water cooled nuclear reactor. A core component constructed of, among other components, a plurality of these spacer grid members, avoids the use of a full length duct by providing spacer sleeves about the sodium tubes passing through the spacer grid members at locations between the grid members, thereby maintaining a predetermined space between adjacent grid members.
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A. J. Court, M. F. Edgar, and D. J. Racki, "Refueling Handling Test of a Ductless Breeder Core", Transactions of the American Nuclear Society, vol. 38, pp. 512-514, Jun. 1981.
Christiansen David W.
Karnesky Richard A.
Hightower Judson R.
Maples John S.
Southworth III Robert
Terapane John F.
The United States of America as represented by the United States
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