Quantitative consistency testing of thermal benchmark lattice experiments

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The paper sets forth a general method to demonstrate the quantitative consistency (or inconsistency) of results of thermal reactor lattice experiments. The method is of particular importance in selecting standard ''benchmark'' experiments for comparison testing of lattice analysis codes and neutron cross sections. ''Benchmark'' thermal lattice experiments are currently selected by consensus, which usually means the experiment is geometrically simple, well-documented, reasonably complete, and qualitatively consistent. A literature search has not revealed any general quantitative test that has been applied to experimental results to demonstrate consistency, although some experiments must have been subjected to some form or other of quantitative … continued below

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32 pages

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Finch, D. R. & Graves, W. E. January 1, 1977.

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  • Savannah River Laboratory
    Publisher Info: Du Pont de Nemours (E.I.) and Co., Aiken, S.C. (USA). Savannah River Lab.
    Place of Publication: Aiken, South Carolina

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The paper sets forth a general method to demonstrate the quantitative consistency (or inconsistency) of results of thermal reactor lattice experiments. The method is of particular importance in selecting standard ''benchmark'' experiments for comparison testing of lattice analysis codes and neutron cross sections. ''Benchmark'' thermal lattice experiments are currently selected by consensus, which usually means the experiment is geometrically simple, well-documented, reasonably complete, and qualitatively consistent. A literature search has not revealed any general quantitative test that has been applied to experimental results to demonstrate consistency, although some experiments must have been subjected to some form or other of quantitative test. The consistency method is based on a two-group neutron balance condition that is capable of revealing the quantitative consistency (or inconsistency) of reported thermal benchmark lattice integral parameters. This equation is used in conjunction with a second equation in the following discussion to assess the consistency (or inconsistency) of: (1) several Cross Section Evaluation Working Group (CSEWG) defined thermal benchmark lattices, (2) SRL experiments on the Mark 5R and Mark 15 lattices, and (3) several D/sub 2/O lattices encountered as proposed thermal benchmark lattices. Nineteen thermal benchmark lattice experiments were subjected to a quantitative test of consistency between the reported experimental integral parameters. Results of this testing showed only two lattice experiments to be generally useful as ''benchmarks,'' three lattice experiments to be of limited usefulness, three lattice experiments to be potentially useful, and 11 lattice experiments to be not useful. These results are tabulated with the lattices identified.

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32 pages

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Dep. NTIS, PC A03/MF A01.

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  • ANS winter meeting, San Francisco, California, USA, 27 Nov 1977

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  • Report No.: DP-MS-77-33
  • Report No.: CONF-771109-26
  • Grant Number: EY-76-C-09-0001
  • Office of Scientific & Technical Information Report Number: 7279343
  • Archival Resource Key: ark:/67531/metadc1447894

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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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  • January 1, 1977

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  • Feb. 10, 2019, 8:45 p.m.

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  • Feb. 4, 2021, 4:44 p.m.

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Finch, D. R. & Graves, W. E. Quantitative consistency testing of thermal benchmark lattice experiments, article, January 1, 1977; Aiken, South Carolina. (https://digital.library.unt.edu/ark:/67531/metadc1447894/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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