{sup 252}Cf-source-driven frequency analysis measurements with subcritical arrays of PWR fuel pins

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Experiments with fresh PWR fuel assemblies were performed to assess the {sup 252}Cf-source-driven frequency analysis method for measuring the subcriticality of spent fuel. The measurements at the Babcox and Wilcox Critical Experiments Facility mocked up between 17x17 fuel pins (single assembly) and a full array of 4961 fuel pins (about 17 fuel assemblies) in borated water with a fixed B concentration. For the full array, the B content of the water was varied from 1511 at delayed criticality to 4303 ppM. Measurements were done for various source-detector-fuel pin configurations; they showed high sensitivity of frequency analysis parameters to B content ... continued below

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12 p.

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Mihalczo, J.T.; Valentine, T.E.; Blakeman, E.D. & King, W.T. August 1, 1996.

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Experiments with fresh PWR fuel assemblies were performed to assess the {sup 252}Cf-source-driven frequency analysis method for measuring the subcriticality of spent fuel. The measurements at the Babcox and Wilcox Critical Experiments Facility mocked up between 17x17 fuel pins (single assembly) and a full array of 4961 fuel pins (about 17 fuel assemblies) in borated water with a fixed B concentration. For the full array, the B content of the water was varied from 1511 at delayed criticality to 4303 ppM. Measurements were done for various source-detector-fuel pin configurations; they showed high sensitivity of frequency analysis parameters to B content and fissile mass. Parameters such as auto and cross power spectral densities can be calculated directly by a more general model of the Monte Carlo code (MCNP-DSP). Calculation-measurement comparisons are presented. This model permits the validation of neutron and gamma ray transport calculational methods with subcritical measurements using the {sup 252}Cf-source-driven frequency analysis method.

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12 p.

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INIS; OSTI as DE96013787

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  • PHYSOR 96: international conference on the physics of reactors, Mito (Japan), 16-20 Sep 1996

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  • Other: DE96013787
  • Report No.: CONF-960924--4
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 378187
  • Archival Resource Key: ark:/67531/metadc686371

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Office of Scientific & Technical Information Technical Reports

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  • August 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Jan. 22, 2016, 4:56 p.m.

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Mihalczo, J.T.; Valentine, T.E.; Blakeman, E.D. & King, W.T. {sup 252}Cf-source-driven frequency analysis measurements with subcritical arrays of PWR fuel pins, article, August 1, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc686371/: accessed July 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.