Volume 3, Issue 3 (March 2006)

    Comparison of Predicted and Measured Helium Production in U.S. BWR Reactors

    (Received 20 June 2005; accepted 29 September 2005)

    Published Online: 2005

    CODEN: JAIOAD

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    Abstract

    Helium production in reactor steel is calculated as the summation of all neutron reactions that produce helium either with thermal or fast neutrons. Thermal helium production is due to elements or impurities that are known to have a thermal neutron cross section for helium production, including 10B and 59Ni. Fast neutrons produce helium in all materials due to the threshold (n, α) reactions as well as other reactions that include helium as one of the reaction products. A generalized equation is given for helium production in all reactor materials and comparisons are given for helium measurements in steel and inconel samples. The helium production calculated using the generalized equation is in good agreement with helium measurements in samples from BWR reactors. Simplified equations are given with numerical values and generic parameters to facilitate calculations. However, it is important to use the actual boron content when known to obtain reliable estimates of the helium production.


    Author Information:

    Greenwood, LR
    Pacific Northwest National Laboratory, Richland, WA

    Oliver, BM
    Pacific Northwest National Laboratory, Richland, WA


    Stock #: JAI13490

    ISSN: 1546-962X

    DOI: 10.1520/JAI13490

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    Author
    Title Comparison of Predicted and Measured Helium Production in U.S. BWR Reactors
    Symposium Reactor Dosimetry, 12th Volume, 2005-05-13
    Committee E10