Fuel performance simulation of iron-chrome-aluminum (FeCrAl) cladding during steady-state LWR operation

Sweet, Ryan; George, Nathan M; Maldonado, G. Ivan; Terrani, Kurt A.; Wirth, Brian D.

doi:10.1016/j.nucengdes.2017.11.043

Cited by 22 publications

(7 citation statements)

References 22 publications

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“…This indicates that the gap closure behavior for these fuel rods is dominated by creep-down of the Zircaloy cladding. This is consistent with results reported previously (Sweet et al, 2018).…”

Section: Osiris Rod H09 Resultssupporting

confidence: 94%

“…Figure 21 shows the fuel mesh generated using the specifications summarized in Table 3. For this analysis, the FeCrAl geometry and reactor conditions from the previous Peach Bottom BWR (Table 4) analysis (Sweet et al, 2018) are used in conjunction with the power history from the OSIRIS H09 test rod.…”

Section: Fecral Cladding Resultsmentioning

confidence: 99%

“…This analysis consists of a comparison between fracture models and the fuel relocation model with experimental data to determine the effect of explicitly modeling fuel fracture on cladding stress state and expansion. Along with the fuel creep model, which was analyzed separately (Sweet et al, 2018), models currently implemented in BISON include fuel relocation, smeared cracking, isotropic softening.…”

Section: Fuel Mechanics Modelsmentioning

confidence: 99%

“…Our previous work has demonstrated the use of the BISON fuel performance code to assess FeCrAl cladding, and shown that the mechanical behavior of the cladding after gap closure is very sensitive to models associated with the fuel compliance (Sweet et al, 2018). This emphasizes that accurately modeling the fuel mechanics is critically important, since this controls the diametric expansion and elastic-plastic response of the fuel that determines the cladding mechanical response and the onset of gap closure.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of FeCrAl cladding and UO<sub>2</sub> fuel including discrete and smeared cracks, and fuel relocation

Sweet

Wirth

Nelson

2018

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As UO 2 fuel heats during the rise to operating power in an LWR, the fuel pellets begin to fracture due to thermal stresses arising due to the temperature profile radially across the fuel. As the fuel fractures, it expands diametrically, reducing the fuel cladding gap and improving the heat transfer characteristics of the fuel. By increasing the effective fuel diameter, gap closure is expected to occur much sooner and greater stresses are expected to form in cladding.In order to assess the diametral expansion of UO 2 fuel pellets due to fracture and its subsequent effect on the formation of stresses in the cladding, explicit fracture models are compared using the BISON fuel performance code. This milestone report describes the results of analyses FeCrAl cladding fueled with UO 2 pellets. Discrete and smeared cracks as well as fuel relocation are taken into account in this analysis, and points to the need for further work in order to correctly model the fuel mechanics which ultimately controls the stresses that develop in the fuel cladding.

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Section: Osiris Rod H09 Resultssupporting

confidence: 94%

Section: Fecral Cladding Resultsmentioning

confidence: 99%

Section: Fuel Mechanics Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of FeCrAl cladding and UO<sub>2</sub> fuel including discrete and smeared cracks, and fuel relocation

Sweet

Wirth

Nelson

2018

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“…Several related studies have used BISON to perform fuel performance evaluations of FeCrAl claddings under normal LWR operating conditions. [100][101][102][103] These studies considered both commercially available alloys [101][102][103] and new FeCrAl alloys under current development. 103 Collectively, these investigations provide an important summary of the advantages and disadvantages of FeCrAl alloys in comparison to current Zr-based cladding.…”

Section: Ivd Fecral Claddingmentioning

confidence: 99%

BISON: A Flexible Code for Advanced Simulation of the Performance of Multiple Nuclear Fuel Forms

et al. 2021

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BISON is a nuclear fuel performance application built using the Multiphysics Object-Oriented Simulation Environment (MOOSE) finite element library. One of its major goals is to have a great amount of flexibility in how it is used, including in the types of fuel it can analyze, the geometry of the fuel being modeled, the modeling approach employed, and the dimensionality and size of the models. Fuel forms that can be modeled include standard light water reactor fuel, emerging light water reactor fuels, tri-structural isotropic fuel particles, and metallic fuels. BISON is a platform for research in nuclear fuel performance modeling while simultaneously serving as a tool for the analysis of nuclear fuel designs. Recent research in BISON includes techniques such as the extended finite element method for fuel cracking, exploration of high-burnup light water reactor fuel behavior, swelling behavior of metallic fuels, and central void formation in mixed-oxide fuel. BISON includes integrated documentation for each of its capabilities, follows rigorous software quality assurance procedures, and has a growing set of rigorous verification and validation tests.

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In Steam Short-Time Oxidation Kinetics of FeCrAl Alloys

Pan

Zhang

Wang

et al. 2018

J. of Materi Eng and Perform

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Fuel performance simulation of iron-chrome-aluminum (FeCrAl) cladding during steady-state LWR operation

Cited by 22 publications

References 22 publications

Analysis of FeCrAl cladding and UO<sub>2</sub> fuel including discrete and smeared cracks, and fuel relocation

Analysis of FeCrAl cladding and UO<sub>2</sub> fuel including discrete and smeared cracks, and fuel relocation

BISON: A Flexible Code for Advanced Simulation of the Performance of Multiple Nuclear Fuel Forms

In Steam Short-Time Oxidation Kinetics of FeCrAl Alloys

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