SOME NUCLEAR CHARACTERISTICS OF SPHERICAL DOUBLE-BLANKET REACTORS

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A number of cases were studied to determine some of the nuclear characterlstics of double-blanket reactors. The reactor geometry is spherical. the average temperature is 280 deg C the core ID is 4 ft and the pressure vessel ID is 9 ft in all cases. The core is contained in a 1/2-in. Zircaloy tank, while the blanket is divided into two regions by another another 1/2-in. Zircaloy shell. The region adjacent to the core is either 0.5 or 1-ft thick Comparison is made of reactors in which either the inner or outer blanket region contains 4000 g Th/liter as ThO/sub ... continued below

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Pages: 16

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Tobias, M. & Fowler, T.B. April 18, 1958.

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Description

A number of cases were studied to determine some of the nuclear characterlstics of double-blanket reactors. The reactor geometry is spherical. the average temperature is 280 deg C the core ID is 4 ft and the pressure vessel ID is 9 ft in all cases. The core is contained in a 1/2-in. Zircaloy tank, while the blanket is divided into two regions by another another 1/2-in. Zircaloy shell. The region adjacent to the core is either 0.5 or 1-ft thick Comparison is made of reactors in which either the inner or outer blanket region contains 4000 g Th/liter as ThO/sub 2/ slurry in D/sub 2/O while the other blanket region holds thorium concentrations of 0, 500, or 1000 g Th/liter. The effects of introducing an 8% poison fraction into the core and 3 g U/syo 233/kg Th into the blanket are examined individually. It is found that reactivity effects are negligible if the inner blanket contains 4000 g Th/liter and settling occurs in the dilute outer region. On the other hand. for a concentrated outer blanket, large reactivity additions are to be expected on removing the thorium from the dilute inner region. Some fuel and thorium inventory reductions appear possible if a concentrated inner blanket is used. Information has also been obtained concerning power distributions and corewall thermal flux. (auth)

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Pages: 16

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  • Other Information: Orig. Receipt Date: 31-DEC-58

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  • Report No.: CF-58-4-66
  • Grant Number: W-7405-ENG-26
  • DOI: 10.2172/4331265 | External Link
  • Office of Scientific & Technical Information Report Number: 4331265
  • Archival Resource Key: ark:/67531/metadc1026211

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • April 18, 1958

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  • Oct. 15, 2017, 10:09 p.m.

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  • Oct. 23, 2017, 6:16 p.m.

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Tobias, M. & Fowler, T.B. SOME NUCLEAR CHARACTERISTICS OF SPHERICAL DOUBLE-BLANKET REACTORS, report, April 18, 1958; Oak Ridge, Tennessee. (digital.library.unt.edu/ark:/67531/metadc1026211/: accessed December 11, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.