Effects of the foil flatness on irradiation performance of U10Mo monolithic mini-plates

Ozaltun, Hakan; Medvedev, Pavel G.; Rabin, Barry H.

doi:10.1115/1.4030982

Title: Effects of the foil flatness on irradiation performance of U10Mo monolithic mini-plates

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Abstract

Monolithic plate-type fuels comprise of a high density, low enrichment, U10Mo fuel foil encapsulated in a cladding material. This concept generates several fabrication challenges such as flatness, centering or thickness variation. There are concerns, if these parameters have implications on overall performance. To investigate these inquiries, the effects of the foil flatness were studied. For this, a representative plate was simulated for an ideal case. The simulations were repeated for additional cases with various foil curvatures to evaluate the effects on the irradiation performance. The results revealed that the stresses and strains induced by fabrication process are not affected by the flatness of the foil. Furthermore, fabrication stresses in the foil are relieved relatively fast in the reactor. The effects of the foil flatness on peak irradiation stressstrains are minimal. There is a slight increase in temperature for the case with maximum curvature. The major impact is on the displacement characteristics. Furthermore, while the case with a flat foil produces a symmetrical swelling, if the foil is curved, more swelling occurs on the thin-cladding side and the plate bows during irradiation.

Authors:

Ozaltun, Hakan ^[1]; Medvedev, Pavel G. ^[1]; Rabin, Barry H. ^[1]

Idaho National Lab. (INL), Idaho Falls, ID (United States)

Publication Date:: Thu Sep 03 00:00:00 EDT 2015

Research Org.:: Idaho National Lab. (INL), Idaho Falls, ID (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1249215

Report Number(s):: INL/JOU-15-34727
Journal ID: ISSN 2332-8983

Grant/Contract Number:: AC07-05ID14517

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Nuclear Engineering and Radiation Science

Additional Journal Information:: Journal Volume: 1; Journal Issue: 4; Journal ID: ISSN 2332-8983

Publisher:: The American Society of Mechanical Engineers

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING; foil flatness; monolithic fuel; U10Mo

Citation Formats


                    Ozaltun, Hakan, Medvedev, Pavel G., and Rabin, Barry H. Effects of the foil flatness on irradiation performance of U10Mo monolithic mini-plates.  United States: N. p., 2015. 
Web.  doi:10.1115/1.4030982.

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                    Ozaltun, Hakan, Medvedev, Pavel G., & Rabin, Barry H. Effects of the foil flatness on irradiation performance of U10Mo monolithic mini-plates.  United States.  https://doi.org/10.1115/1.4030982

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                    Ozaltun, Hakan, Medvedev, Pavel G., and Rabin, Barry H. Thu .  
"Effects of the foil flatness on irradiation performance of U10Mo monolithic mini-plates".  United States.  https://doi.org/10.1115/1.4030982.  https://www.osti.gov/servlets/purl/1249215.

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@article{osti_1249215,

  title        = {Effects of the foil flatness on irradiation performance of U10Mo monolithic mini-plates},

  author       = {Ozaltun, Hakan and Medvedev, Pavel G. and Rabin, Barry H.},

  abstractNote = {Monolithic plate-type fuels comprise of a high density, low enrichment, U10Mo fuel foil encapsulated in a cladding material. This concept generates several fabrication challenges such as flatness, centering or thickness variation. There are concerns, if these parameters have implications on overall performance. To investigate these inquiries, the effects of the foil flatness were studied. For this, a representative plate was simulated for an ideal case. The simulations were repeated for additional cases with various foil curvatures to evaluate the effects on the irradiation performance. The results revealed that the stresses and strains induced by fabrication process are not affected by the flatness of the foil. Furthermore, fabrication stresses in the foil are relieved relatively fast in the reactor. The effects of the foil flatness on peak irradiation stressstrains are minimal. There is a slight increase in temperature for the case with maximum curvature. The major impact is on the displacement characteristics. Furthermore, while the case with a flat foil produces a symmetrical swelling, if the foil is curved, more swelling occurs on the thin-cladding side and the plate bows during irradiation.},

  doi          = {10.1115/1.4030982},

  journal      = {Journal of Nuclear Engineering and Radiation Science},

  number       = 4,

  volume       = 1,

  place        = {United States},

  year         = {Thu Sep 03 00:00:00 EDT 2015},

  month        = {Thu Sep 03 00:00:00 EDT 2015}

}

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