ADVANCED STUDIES AND STATISTICAL TREATMENT FOR SODIUM-COOLED FAST REACTOR PIN FAILURES DURING UNPROTECTED TRANSIENT OVERPOWER ACCIDENT - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Nuclear Science and Engineering Année : 2020

ADVANCED STUDIES AND STATISTICAL TREATMENT FOR SODIUM-COOLED FAST REACTOR PIN FAILURES DURING UNPROTECTED TRANSIENT OVERPOWER ACCIDENT

Résumé

Usually, simulation tools are validated on experimental data considering a Best Estimate simulation case and there is no quantification of this validation, which remains based on a rough expert judgment. This paper presents an advanced validation treatment of the simulation tool OCARINa, devoted to Unprotected Transient OverPower (UTOP) accidents, on two CABRI tests, considering this time, a Best Estimate Plus Uncertainties (BEPU) approach. The output results of interest are both scalar physical data such as the time and location of the pin failure and associated molten mass and vector data such as temperature axial distribution or temperature evolution versus time. This approach is a first step in quantifying the degree of agreement between the calculation results and the experimental results. It is of great interest for the VV&UQ (Verification, Validation and Uncertainty Quantification) approach, which leads to the qualification of scientific calculation tools.
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hal-03750679 , version 1 (12-08-2022)

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Nathalie Marie, K Herbreteau, A Marrel, F Bertrand, A Bachrata. ADVANCED STUDIES AND STATISTICAL TREATMENT FOR SODIUM-COOLED FAST REACTOR PIN FAILURES DURING UNPROTECTED TRANSIENT OVERPOWER ACCIDENT. Nuclear Science and Engineering, 2020, ⟨10.1080/00295639.2020.1722542⟩. ⟨hal-03750679⟩
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