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Title: NUCLEAR REACTOR CORE DESIGN

Abstract

An improved core design for a sodium-cooled, graphitemoderated nuclear reactor is described. The improved reactor core comprises a number of blocks of moderator material, each block being in the shape of a regular prism. A number of channels, extending the length of each block, are disposed around the periphery. When several blocks are placed in contact to form the reactor core, the channels in adjacent blocks correspond with each other to form closed conduits extending the length of the core. Fuel element clusters are disposed in these closed conduits, and liquid coolant is forced through the annulus between the fuel cluster and the inner surface of the conduit. In a preferred embodiment of the invention, the moderator blocks are in the form of hexagonal prisms with longitudinal channels cut into the corners of the hexagon. The main advantage of an "edge-loaded" moderator block is that fewer thermal neutrons are absorbed by the moderator cladding, as compared with a conventional centrally loaded moderator block.

Inventors:
; ; ;
Publication Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4153568
Patent Number(s):
US 2929768
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-14-016432
NSA Number:
NSA-14-016432
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-60
Country of Publication:
United States
Language:
English
Subject:
REACTOR TECHNOLOGY; ABSORPTION; CONFIGURATION; COOLANT LOOPS; FUEL CANS; FUEL ELEMENTS; GRAPHITE MODERATOR; LIQUID METAL COOLANT; NEUTRONS; PATENT; PLANNING; REACTOR CORE; REACTORS; SODIUM

Citation Formats

Mahlmeister, J.E., Peck, W.S., Haberer, W.V., and Williams, A.C.. NUCLEAR REACTOR CORE DESIGN. United States: N. p., 1960. Web.
Mahlmeister, J.E., Peck, W.S., Haberer, W.V., & Williams, A.C.. NUCLEAR REACTOR CORE DESIGN. United States.
Mahlmeister, J.E., Peck, W.S., Haberer, W.V., and Williams, A.C.. Tue . "NUCLEAR REACTOR CORE DESIGN". United States. doi:.
@article{osti_4153568,
title = {NUCLEAR REACTOR CORE DESIGN},
author = {Mahlmeister, J.E. and Peck, W.S. and Haberer, W.V. and Williams, A.C.},
abstractNote = {An improved core design for a sodium-cooled, graphitemoderated nuclear reactor is described. The improved reactor core comprises a number of blocks of moderator material, each block being in the shape of a regular prism. A number of channels, extending the length of each block, are disposed around the periphery. When several blocks are placed in contact to form the reactor core, the channels in adjacent blocks correspond with each other to form closed conduits extending the length of the core. Fuel element clusters are disposed in these closed conduits, and liquid coolant is forced through the annulus between the fuel cluster and the inner surface of the conduit. In a preferred embodiment of the invention, the moderator blocks are in the form of hexagonal prisms with longitudinal channels cut into the corners of the hexagon. The main advantage of an "edge-loaded" moderator block is that fewer thermal neutrons are absorbed by the moderator cladding, as compared with a conventional centrally loaded moderator block.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 22 00:00:00 EST 1960},
month = {Tue Mar 22 00:00:00 EST 1960}
}
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  • An improved core design is given for a sodium-cooled, graphite-moderated nuclear reactor. The core comprises a number of blocks of moderator material, each block being in the shape of a regular prism. A number of channels, extending the length of each block, are disposed around the periphery thereof. When several blocks are placed in contact to form the reactor core, the channels in adjacent blocks correspond with each other to form closed conduits extending the length of the core. Fuel element clusters are disposed in these closed conduits, and liquid coolant is forced through the annulus between the fuel clustermore » and the inner surface of the conduit. ln a preferred embodiment of the invention, the moderator blocks are in the form of hexagonal prisms with longitudinal channels cut into the corners of the hexagon. The main advantage of an "edge-loaded" moderator block is that fewer thermal neutrons are absorbed by the moderator cladding, as compared with a conventional centrally-loaded moderator block.« less
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