SCALE Lattice Physics Code Assessments of Accident Tolerant Fuel

Jessee, Matthew Anderson; Yang, Jinan; Mertyurek, Ugur; Marshall, William B.J.; Holcomb, Andrew

doi:10.2172/1606738

Cited by 2 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some aspects of the lattice physics effects and code performance related to ATF designs have been assessed in prior work [Jessee et al 2020], where the primary purpose was to assess the ATF designpredictive capabilities of the SCALE/Polaris code with a focus on nuclear data uncertainties and the impact of modeling approximations. The ATF concepts evaluated include Cr2O3-and Al2O3-Cr2O3-doped UO2 fuel, U3Si2 fuel, FeCrAl cladding, SiC cladding, and Cr-coated cladding.…”

Section: Review Of Previous Atf Evaluationsmentioning

confidence: 99%

“…The assessments performed in [Jessee et al 2020] led to the general conclusion that ATF materials can be ranked in terms of the degree of perturbation to non-ATF lattice reactivity, code uncertainty, and physics parameters. Dopants and Cr coating have the smallest effect, followed by SiC clad, with FeCrAl and U3Si2 showing the largest effects.…”

Section: Summary Of Prior Atf Lattice and Code Assessmentsmentioning

confidence: 99%

“…[Wieselquist et al 2020] Previous work has determined best acceptable ATF modeling practices and confirmed the fidelity of Polaris ATF calculations to higher-order calculations. [Jessee et al 2020] The goals of the current work are to:…”

Section: Introductionmentioning

confidence: 99%

“…. Polaris-Lattice types included in depletion uncertainty analysis [Jessee et al 2020]. …”

mentioning

confidence: 99%

See 3 more Smart Citations

Extended Enrichment Accident Tolerant LWR Fuel Isotopic and Lattice Parameter Trends

Hall¹,

Sweet²,

Belles³

et al. 2021

View full text Add to dashboard Cite

Section: Review Of Previous Atf Evaluationsmentioning

confidence: 99%

Section: Summary Of Prior Atf Lattice and Code Assessmentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…. Polaris-Lattice types included in depletion uncertainty analysis [Jessee et al 2020]. …”

mentioning

confidence: 99%

See 2 more Smart Citations

Extended Enrichment Accident Tolerant LWR Fuel Isotopic and Lattice Parameter Trends

Hall¹,

Sweet²,

Belles³

et al. 2021

View full text Add to dashboard Cite

“…The BWR ATF model is a 10 × 10 GE14 dominant lattice with UO 2 fuel and FeCrAl cladding. This model comprises 92 UO 2 fuel pins, 78 out of which are fuel with various enrichments from 2 to 4% and the remaining are 14 rods with gadolinium, surrounded by water coolant in a channel box structure (Jessee, 2020). The layouts of a representative LCT benchmark experiment (LCT-008-001) and the application model are shown in Figure 7.…”

Section: Overall Processmentioning

confidence: 99%

ACCRUE—An Integral Index for Measuring Experimental Relevance in Support of Neutronic Model Validation

2021

View full text Add to dashboard Cite

A key challenge for the introduction of any design changes, e.g., advanced fuel concepts, first-of-a-kind nuclear reactor designs, etc., is the cost of the associated experiments, which are required by law to validate the use of computer models for the various stages, starting from conceptual design, to deployment, licensing, operation, and safety. To achieve that, a criterion is needed to decide on whether a given experiment, past or planned, is relevant to the application of interest. This allows the analyst to select the best experiments for the given application leading to the highest measures of confidence for the computer model predictions. The state-of-the-art methods rely on the concept of similarity or representativity, which is a linear Gaussian-based inner-product metric measuring the angle—as weighted by a prior model parameters covariance matrix—between two gradients, one representing the application and the other a single validation experiment. This manuscript emphasizes the concept of experimental relevance which extends the basic similarity index to account for the value accrued from past experiments and the associated experimental uncertainties, both currently missing from the extant similarity methods. Accounting for multiple experiments is key to the overall experimental cost reduction by prescreening for redundant information from multiple equally-relevant experiments as measured by the basic similarity index. Accounting for experimental uncertainties is also important as it allows one to select between two different experimental setups, thus providing for a quantitative basis for sensor selection and optimization. The proposed metric is denoted by ACCRUE, short for Accumulative Correlation Coefficient for Relevance of Uncertainties in Experimental validation. Using a number of criticality experiments for highly enriched fast metal systems and low enriched thermal compound systems with accident tolerant fuel concept, the manuscript will compare the performance of the ACCRUE and basic similarity indices for prioritizing the relevance of a group of experiments to the given application.

show abstract

SCALE Lattice Physics Code Assessments of Accident Tolerant Fuel

Abstract: Comparison of k inf with depletion for 10 representative samples generated by SAMPLER for BWR UO 2 lattice .

Cited by 2 publications

References 3 publications

Extended Enrichment Accident Tolerant LWR Fuel Isotopic and Lattice Parameter Trends

Extended Enrichment Accident Tolerant LWR Fuel Isotopic and Lattice Parameter Trends

ACCRUE—An Integral Index for Measuring Experimental Relevance in Support of Neutronic Model Validation

Contact Info

Product

Resources

About