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Title: CALANDRIA TYPE SODIUM GRAPHITE REACTOR

Abstract

A sodium graphite power reactor in which the unclad graphite moderator and fuel elements are contained within a core tank is described. The core tank is submersed in sodium within the reactor vessel. Extending longitudinally through the core thnk are process tubes with fuel elements positioned therein. A bellows sealing means allows axial expansion and construction of the tubes. Within the core tank, a leakage plenum is located below the graphite, and above the graphite is a gas space. A vent line regulates the gas pressure in the space, and another line removes sodium from the plenum. The sodium coolant flows from the lower reactor vessel through the annular space between the fuel elements and process tubes and out into the reactor vessel space above the core tank. From there, the heated coolant is drawn off through an outlet line and sent to the heat exchange. (AEC)

Inventors:
; ; ; ;
Publication Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4027625
Patent Number(s):
US 3121052
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-18-019400
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-64
Country of Publication:
United States
Language:
English
Subject:
REACTOR TECHNOLOGY; COOLANT LOOPS; EXPANSION; FUEL ELEMENTS; GASES; GRAPHITE MODERATOR; HEAT EXCHANGERS; LEAKS; LIQUID FLOW; LIQUID METAL COOLANT; POWER PLANTS; PRESSURE; PRESSURE VESSELS; REACTOR CORE; REACTORS; SEALS; SODIUM; TUBES; VESSELS

Citation Formats

Peterson, R.M., Mahlmeister, J.E., Vaughn, N.E., Sanders, W.J., and Williams, A.C. CALANDRIA TYPE SODIUM GRAPHITE REACTOR. United States: N. p., 1964. Web.
Peterson, R.M., Mahlmeister, J.E., Vaughn, N.E., Sanders, W.J., & Williams, A.C. CALANDRIA TYPE SODIUM GRAPHITE REACTOR. United States.
Peterson, R.M., Mahlmeister, J.E., Vaughn, N.E., Sanders, W.J., and Williams, A.C. 1964. "CALANDRIA TYPE SODIUM GRAPHITE REACTOR". United States. doi:.
@article{osti_4027625,
title = {CALANDRIA TYPE SODIUM GRAPHITE REACTOR},
author = {Peterson, R.M. and Mahlmeister, J.E. and Vaughn, N.E. and Sanders, W.J. and Williams, A.C.},
abstractNote = {A sodium graphite power reactor in which the unclad graphite moderator and fuel elements are contained within a core tank is described. The core tank is submersed in sodium within the reactor vessel. Extending longitudinally through the core thnk are process tubes with fuel elements positioned therein. A bellows sealing means allows axial expansion and construction of the tubes. Within the core tank, a leakage plenum is located below the graphite, and above the graphite is a gas space. A vent line regulates the gas pressure in the space, and another line removes sodium from the plenum. The sodium coolant flows from the lower reactor vessel through the annular space between the fuel elements and process tubes and out into the reactor vessel space above the core tank. From there, the heated coolant is drawn off through an outlet line and sent to the heat exchange. (AEC)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1964,
month = 2
}
  • An improved sodium graphite reactor core structure of the calandria tyoe is designed as a replacement for the present Sodium Reactor Experiment (SRE) canned moderator core structure. The structure comprises a sealed core tank, a graphite moderator having unclad outer surfaces in the tank, a plurality of process tubes traversing the tank through the graphite, fuel elements located in the tubes, and protective sleeves between the tubes and the graphite. The advantages of this structure over the present SRE core structure are outlined. (D.L.C.)
  • The design of an improved Na-graphite reactor system with a simplified primary heat-exchange loop is patented. The reactor consists of a calandria core vessel in conjunction with an overflow-type primary Na system. Radiation shielding around the reactor core within the vessel forms an annular volume between the shielding and the vessel walls. Na is pumped upward through the core into a plenum at the top of the reactor and overflows through the annular volume, which contains the intermediate heat exchanger. All of the primary Na system is confined to the reactor vessel. The reactor tank contains unclad graphite moderator andmore » a number of process tubes containing fuel elements passing longitudinally through the graphite. (M.P.G.)« less
  • This patent relates to a nuclear power reactor comprising a reactor vessel, shielding means positioned at the top of said vessel, means sealing said reactor vessel to said shielding means, said vessel containing a quantity of sodium, a core tank, unclad graphite moderator disposed in said tank, means including a plurality of process tubes traversing said tank for isolating said graphite from said sodium, fuel elements positioned in said process tubes, said core tank being supported in spaced relation to the walls and bottom of said reactor vessel and below the level of said sodium, neutron shielding means positioned adjacentmore » said core tank between said core tank and the walls of said vessel, said neutron shielding means defining an annuiar volume adjacent the inside wall of said reactor vessel, inlet plenum means below said core tank for providing a passage between said annular volume and said process tubes, heat exchanger means removably supported from the first-named shielding means and positioned in said annular volume, and means for circulating said sodium over said neutron shielding means down through said heat exchanger, across said inlet plenum and upward through said process tubes, said last-named means including electromagnetic pumps located outside said vessel and supported on said vessel wall between said heat exchanger means and said inlet plenum means. (AEC)« less