Thermodynamics of the fuel fragmentation gas

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In the context of nuclear reactor safety studies, a program is in progress at ORNL whereby fuel-fragmentation situations are mocked up by the application of high-current capacitor discharges through solid UO/sub 2/ samples. The goal of the present work is to predict such quantities as the number of gas and liquid fragments and their energy distributions. The point of view adopted is that upon fragmentation, a cloud of UO/sub 2/ vapor is formed containing ''primeval'' liquid fragments which act as condensation centers. In the evolution of time, fragment growth is controlled by nucleation, coagulation and evaporation processes. Eventually, the vapor-droplet ... continued below

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Pages: 6

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Perez, R.B. & Alsmiller, R.G. Jr. January 1, 1977.

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Description

In the context of nuclear reactor safety studies, a program is in progress at ORNL whereby fuel-fragmentation situations are mocked up by the application of high-current capacitor discharges through solid UO/sub 2/ samples. The goal of the present work is to predict such quantities as the number of gas and liquid fragments and their energy distributions. The point of view adopted is that upon fragmentation, a cloud of UO/sub 2/ vapor is formed containing ''primeval'' liquid fragments which act as condensation centers. In the evolution of time, fragment growth is controlled by nucleation, coagulation and evaporation processes. Eventually, the vapor-droplet system will reach a situation in which clusters (fragments) of various sizes and UO/sub 2/ vapor will coexist in an ''association-disassociation'' equilibrium. Thus, the physical model considered here consists of the identification of the fragmentation gas with an ''imperfect'' vapor, made up of interacting UO/sub 2/ vapor and liquid fragments. The results of the study are presented.

Physical Description

Pages: 6

Notes

Dep. NTIS, PC A06/MF A01.

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

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  • Report No.: CONF-771109-91
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 5152143
  • Archival Resource Key: ark:/67531/metadc1056959

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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.

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  • January 1, 1977

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 1, 2018, 6:14 p.m.

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Perez, R.B. & Alsmiller, R.G. Jr. Thermodynamics of the fuel fragmentation gas, article, January 1, 1977; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1056959/: accessed April 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.