Implementation of the Fissile Mass Flow Monitor Source Verification and Confirmation

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This report presents the verification procedure for neutron sources installed in U.S. Department of Energy equipment used to measure fissile material flow. The Fissile Mass Flow Monitor (FMFM) equipment determines the {sup 235}U fissile mass flow of UF{sub 6} gas streams by using {sup 252}Cf neutron sources for fission activation of the UF{sub 6} gas and by measuring the fission products in the flow. The {sup 252}Cf sources in each FMFM are typically replaced every 2 to 3 years due to their relatively short half-life ({approx} 2.65 years). During installation of the new FMFM sources, the source identity and neutronic ... continued below

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Uckan, Taner; March-Leuba, Jose A; Powell, Danny H; Nelson, Dennis & Radev, Radoslav December 1, 2007.

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Description

This report presents the verification procedure for neutron sources installed in U.S. Department of Energy equipment used to measure fissile material flow. The Fissile Mass Flow Monitor (FMFM) equipment determines the {sup 235}U fissile mass flow of UF{sub 6} gas streams by using {sup 252}Cf neutron sources for fission activation of the UF{sub 6} gas and by measuring the fission products in the flow. The {sup 252}Cf sources in each FMFM are typically replaced every 2 to 3 years due to their relatively short half-life ({approx} 2.65 years). During installation of the new FMFM sources, the source identity and neutronic characteristics provided by the manufacturer are verified with the following equipment: (1) a remote-control video television (RCTV) camera monitoring system is used to confirm the source identity, and (2) a neutron detection system (NDS) is used for source-strength confirmation. Use of the RCTV and NDS permits remote monitoring of the source replacement process and eliminates unnecessary radiation exposure. The RCTV, NDS, and the confirmation process are described in detail in this report.

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  • Report No.: ORNL/TM-2007/068
  • Grant Number: DE-AC05-00OR22725
  • DOI: 10.2172/1042716 | External Link
  • Office of Scientific & Technical Information Report Number: 1042716
  • Archival Resource Key: ark:/67531/metadc840854

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 1, 2007

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • June 17, 2016, 2:49 p.m.

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Uckan, Taner; March-Leuba, Jose A; Powell, Danny H; Nelson, Dennis & Radev, Radoslav. Implementation of the Fissile Mass Flow Monitor Source Verification and Confirmation, report, December 1, 2007; United States. (digital.library.unt.edu/ark:/67531/metadc840854/: accessed September 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.