Nuclear reactor spacer grid and ductless core component
This 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.
- Assignee:
- Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4818479
- Application Number:
- TRN: 89-017909
- OSTI ID:
- 5961301
- Resource Relation:
- Patent File Date: Filed date 4 Oct 1985
- Country of Publication:
- United States
- Language:
- English
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FUEL RODS
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FUEL ELEMENTS
REACTORS
210100* - Power Reactors
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210200 - Power Reactors
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