Coincidence counter design for the assay of vitrified nuclear waste

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For the termination of nuclear safeguards and transfers to waste storage, the verification of the plutonium content in vitrified nuclear waste is required by international safeguards agreements. A novel design has been used to develop a coincidence counter for measuring vitrified nuclear waste. The authors have devised a method to measure the {sup 244}Cm content and to calculate the plutonium content from the curium-to-plutonium ratio. In order to provide unattended inspection, the counter is designed for continuous operation in the presence of highly radioactive samples: 3.0 {times} 10{sup 7} Rad/h gamma and 9.0 {times} 10{sup 7}/s neutron fluence. Operability under ... continued below

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7 p.

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Beddingfield, D.H.; Menlove, H.O.; Iwamoto, T. & Tomikawa, H. December 31, 1998.

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For the termination of nuclear safeguards and transfers to waste storage, the verification of the plutonium content in vitrified nuclear waste is required by international safeguards agreements. A novel design has been used to develop a coincidence counter for measuring vitrified nuclear waste. The authors have devised a method to measure the {sup 244}Cm content and to calculate the plutonium content from the curium-to-plutonium ratio. In order to provide unattended inspection, the counter is designed for continuous operation in the presence of highly radioactive samples: 3.0 {times} 10{sup 7} Rad/h gamma and 9.0 {times} 10{sup 7}/s neutron fluence. Operability under these conditions has been obtained by designing a heavily shielded detector with radiation hard components subtending a limited solid angle. A counting technique, Localized Source Term Coincidence Counting, has been developed to allow neutron assay of this type of sample. The system will be installed at the Power Nuclear Corporation Tokai Vitrification Facility in the later part of 1998.

Physical Description

7 p.

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INIS; OSTI as DE99001758

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  • 39. Institute of Nuclear Materials Management (INMM) annual meeting, Naples, FL (United States), 26-30 Jul 1998

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  • Other: DE99001758
  • Report No.: LA-UR--98-2865
  • Report No.: CONF-980733--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 314132
  • Archival Resource Key: ark:/67531/metadc680573

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  • December 31, 1998

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  • July 25, 2015, 2:20 a.m.

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  • Feb. 29, 2016, 1:32 p.m.

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Beddingfield, D.H.; Menlove, H.O.; Iwamoto, T. & Tomikawa, H. Coincidence counter design for the assay of vitrified nuclear waste, article, December 31, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc680573/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.