The underwater coincidence counter for plutonium measurements in mixed-oxide fuel assemblies manual

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Description

This manual describes the Underwater Coincidence Counter (UWCC) that has been designed for the measurement of plutonium in mixed-oxide (MOX) fuel assemblies prior to irradiation. The UWCC uses high-efficiency {sup 3}He neutron detectors to measure the spontaneous-fission and induced-fission rates in the fuel assembly. Measurements can be made on MOX fuel assemblies in air or underwater. The neutron counting rate is analyzed for singles, doubles, and triples time correlations to determine the {sup 240}Pu effective mass per unit length of the fuel assembly. The system can verify the plutonium loading per unit length to a precision of less than 1% ... continued below

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43 p.

Creation Information

Eccleston, G. W.; Menlove, H. O.; Abhold, M.; Baker, M. & Pecos, J. May 1, 1999.

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Description

This manual describes the Underwater Coincidence Counter (UWCC) that has been designed for the measurement of plutonium in mixed-oxide (MOX) fuel assemblies prior to irradiation. The UWCC uses high-efficiency {sup 3}He neutron detectors to measure the spontaneous-fission and induced-fission rates in the fuel assembly. Measurements can be made on MOX fuel assemblies in air or underwater. The neutron counting rate is analyzed for singles, doubles, and triples time correlations to determine the {sup 240}Pu effective mass per unit length of the fuel assembly. The system can verify the plutonium loading per unit length to a precision of less than 1% in a measurement time of 2 to 3 minutes. System design, components, performance tests, and operational characteristics are described in this manual.

Physical Description

43 p.

Notes

INIS; OSTI as DE00752383

Medium: P; Size: 43 pages

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  • Other Information: PBD: 1 May 1999

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  • Report No.: LA-13574-M
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/752383 | External Link
  • Office of Scientific & Technical Information Report Number: 752383
  • Archival Resource Key: ark:/67531/metadc710717

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Creation Date

  • May 1, 1999

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 12, 2017, 4:08 p.m.

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Eccleston, G. W.; Menlove, H. O.; Abhold, M.; Baker, M. & Pecos, J. The underwater coincidence counter for plutonium measurements in mixed-oxide fuel assemblies manual, report, May 1, 1999; Los Alamos, New Mexico. (digital.library.unt.edu/ark:/67531/metadc710717/: accessed August 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.