The role of gamma rays and freely-migrating defects in reactor pressure vessel embrittlement

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Description

Gamma ray effects are often neglected when evaluating reactor pressure vessel (RPV) embrittlement. However, recent analyses indicate that in newer style light water reactors, gamma damage can be a substantial fraction of the total displacement damage experienced by the (RPV); ignoring this damage will lead to errors in embrittlement predictions. Furthermore, gamma rays may be more efficient than fast neutrons at producing freely-migrating defects and as such can impact certain embrittlement mechanisms more effectively than fast neutrons. Consideration of these gamma effects are therefore essential for a more complete understanding of radiation embrittlement.

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11 p.

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Alexander, D.E. & Rehn, L.E. September 1, 1996.

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Description

Gamma ray effects are often neglected when evaluating reactor pressure vessel (RPV) embrittlement. However, recent analyses indicate that in newer style light water reactors, gamma damage can be a substantial fraction of the total displacement damage experienced by the (RPV); ignoring this damage will lead to errors in embrittlement predictions. Furthermore, gamma rays may be more efficient than fast neutrons at producing freely-migrating defects and as such can impact certain embrittlement mechanisms more effectively than fast neutrons. Consideration of these gamma effects are therefore essential for a more complete understanding of radiation embrittlement.

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11 p.

Notes

INIS; OSTI as DE96015087

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  • 9. international symposium on reactor dosimetry, Prague (Czech Republic), 2-6 Sep 1996

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  • Other: DE96015087
  • Report No.: ANL/MSD/CP--87964
  • Report No.: CONF-9609243--5
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 383635
  • Archival Resource Key: ark:/67531/metadc686197

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Office of Scientific & Technical Information Technical Reports

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  • September 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 16, 2015, 3:45 p.m.

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Alexander, D.E. & Rehn, L.E. The role of gamma rays and freely-migrating defects in reactor pressure vessel embrittlement, article, September 1, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc686197/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.