Evaluation of LLNL's Personnel Nuclear Accident Dosimeter at the Silene Reactor (October 2009)

Technical Report · Tue Jun 01 04:00:00 EDT 2010

DOI:https://doi.org/10.2172/1129981· OSTI ID:1129981

Hickman, D. P. ^[1]; Heinrichs, D. P. ^[1]; Wong, C. T. ^[1]; Wysong, A. R. ^[1]; Scorby, J. C. ^[1]; Topper, J. D. ^[1]; Gressmann, F. A. ^[1]; Madden, D. J. ^[1]

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1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

The Lawrence Livermore National Laboratory uses neutron activation elements in a Panasonic TLD holder as a personnel nuclear accident dosimeter (PNAD). The LLNL PNAD has periodically been tested using a Cf-252 neutron source, however it has been more than 25 years since the PNAD has been tested against a source of neutrons that arise from a reactor generated neutron spectrum that simulates a criticality. In October 2009, LLNL participated in an intercomparison of nuclear accident dosimeters with several other Department of Energy facilities. The reactor generated neutron irradiations were performed at the CEA Valduc Silene reactor. The current PNAD design at LLNL was developed in the early1980’s and evaluated in 1984 using neutron leakage spectra generated by the Health Physics Research Reactor at Oak Ridge National Laboratory. Fluence and dose conversion factors developed in 1984 have been adjusted to account for changes in measurement methods; however these factors continue to be the fundamental basis for determining dose using the current PNAD system.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48; AC52-07NA27344
• OSTI ID: 1129981
• Report Number(s): LLNL--TR-433878
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
61 RADIATION PROTECTION AND DOSIMETRY
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
99 GENERAL AND MISCELLANEOUS