UO$sub 2$ THERMAL CONDUCTIVITY AT ELEVATED TEMPERATURES

Lyons, M.F.; Straley, R. L.; Coplin, D.H.; Weidenbaum, B.; Pashos, T.J.

doi:10.2172/4639679

Cited by 5 publications

(4 citation statements)

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“…By recognizing that the above value of approximately 95 W/cm for the UOp thermal conductivity integral may decrease slightly by refining the conductivity value for the pellet-to-clad interface, the result is very close to that determined previously from short-time capsule (14) irradiations. ^ ' The capsules were irradiated for 20 minutes and indicated an integral conductivity value of 86 W/cm based on the time average surface heat flux over the total irradiation period.…”

Section: ••^Kdtsupporting

confidence: 85%

UO$sub 2$ FUEL ROD OPERATION WITH GROSS CENTRAL MELTING

Lyons¹,

Nelson²,

Pashos³

et al. 1963

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Section: ••^Kdtsupporting

confidence: 85%

UO$sub 2$ FUEL ROD OPERATION WITH GROSS CENTRAL MELTING

Lyons¹,

Nelson²,

Pashos³

et al. 1963

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“…indicating close correlation between these out-of-pile measurements and those (23,26) obtained in-pile by other investigators Equipment and techniques developed on these prior programs were adapted to this study, with only minor modification. The test element, Figure 18, was a cylindrical stack of "fuel" pellets, in a thin walled stainless The test element and cooling jacket were installed in an enclosure where·electrical connections were made to the heater rod, and atmosphere control could be maintained by an evacuation· and backfill system.…”

Section: Transient Methodssupporting

confidence: 60%

DEVELOPMENT AND TESTING OF A TEMPERATURE TRANSIENT METHOD FOR PERFORMING IN- PILE THERMAL CONDUCTANCE TESTING. Final Summary Report, March 1, 1964-November 30, 1965

Burdg¹,

Parrette²,

Brockett³

et al. 1966

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“…The ability to evaluate the potential for PCI failure must include a means to determine the impact of operation on the state of the fuel and determine whether the fuel is in a conditioned or de-conditioned state during the transient. Extensive experimental research has been performed to gain a better understanding of the mechanisms leading to PCI failures in the UO2 pellet/zirconium-alloy cladding fuel system using separate effects tests, power ramp tests in material test reactors, and post-irradiation examination of experimental and commercial fuel rods [10]. These investigations have shown that a complicated combination of material susceptibility, local fission product environment, and pellet-cladding mechanical interaction can lead to local chemical attack of the cladding by SCC.…”

Section: Fig1mentioning

confidence: 99%

(Project 14-6770) An Investigation to Establish Multiphysical Property Dataset of Nuclear Materials Based on in-situ Observations and Measurements

Tomar

Haque

Hattar

2017

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Year 1 (10/14 to 9/15) [year 1 milestones completed] M1: Setup of in-situ fine probe TEM irradiation damage measurement at Sandia National Lab M2: Design and nanofabricate in-situ TEM testing devices for mechanical property measurements and integration with specimens obtained from milestone M1 with specific focus on time dependent measurements M3: Setup samples obtained from objective M1 and M2 to various test chemical environments with focus on understanding time dependent change based on fracture properties M4: Setup nanomechanical and micromechanical SERS to understand the effect of environment and temperature Year 2 (10/15 to 9/16) [year 2 milestones completed] M5: Conduct fine probe characterization experiments at Sandia National Lab with Zircaloy samples M6: In-situ TEM measurements of mechanical strength and fracture damage as function of irradiation and mechanical stressing, M7: In-situ Nanomechanical and micromechanical SERS based measurements of fracture strength M8: Identification of key microstructural parameters that link irradiation induced damage (based on Sandia measurements) and thermomechanical properties based on quantified data obtained during milestones M7-M9 Year 3 (10/16 to 9/17) (started and ongoing) M9: Combine feedback from Sandia and Penn State TEM experiments and simulations to provide uncertainty quantified dataset. M10: In-situ TEM measurements of mechanical properties (strength and fracture toughness) as function time dependent microstructure change and combine the data with the data obtained in objective M8-9. M11: In-situ Nanomechanical and micromechanical SERS based measurements to understand the effect of temperature up to 500 o C on fracture toughness and strength. M12: Establishment of microstructure-irradiation-stress-environment-temperature correlations using Bayesian uncertainty quantification procedures. The Gantt-Chart provides task update.

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UO$sub 2$ THERMAL CONDUCTIVITY AT ELEVATED TEMPERATURES

Cited by 5 publications

References 0 publications

UO$sub 2$ FUEL ROD OPERATION WITH GROSS CENTRAL MELTING

UO$sub 2$ FUEL ROD OPERATION WITH GROSS CENTRAL MELTING

DEVELOPMENT AND TESTING OF A TEMPERATURE TRANSIENT METHOD FOR PERFORMING IN- PILE THERMAL CONDUCTANCE TESTING. Final Summary Report, March 1, 1964-November 30, 1965

(Project 14-6770) An Investigation to Establish Multiphysical Property Dataset of Nuclear Materials Based on in-situ Observations and Measurements

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