Containment Evaluation under Severe Accidents (CESA): synthesis of the predictive calculations and analysis of the first experimental results obtained on the Civaux mock-up

Granger, Laurent; Rieg, C.; Touret, J. P.; Fleury, François; Nahas, Georges; Danisch, R.; Brusa, Luigi; Millard, Alain; Laborderie, Christian; Ulm, Franz‐Josef; Contri, Paolo; Schimmelpfennig, K.; Barre, Francis; Firnhaber, M.; Gauvain, J.; Coulon, Nadine; Dutton, Leslie; Tuson, A.T.

doi:10.1016/s0029-5493(01)00398-3

Cited by 24 publications

(8 citation statements)

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“…On the other hand, arising of damage on a sound point can be provoked by non-locality; through Eq. (16) local strains are in fact averaged with high strains of the neighbouring damaged points. A detailed investigation of this damage diffusion effect for strain-gradient regularizations is provided in [13], while the close relationship between nonlocal integral models, employed in the present paper, and strain gradient models is given for example in [34].…”

Section: Fields Used In the Crack Path Searchmentioning

confidence: 99%

“…Examples are confinement vessels and cooling towers of nuclear power plants, dams and liquid natural gas reservoirs [41,16,38]. In any case, since concrete is exposed to environmental agents, the knowledge of crack characteristics may be exploited in order to assess durability, in the sense of penetration of external chemical aggressive agents [5] or simply for aesthetic reasons.…”

Section: Introductionmentioning

confidence: 99%

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Topological search of the crack pattern from a continuum mechanical computation

Bottoni

Dufour

Giry

2015

Engineering Structures

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Section: Fields Used In the Crack Path Searchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Topological search of the crack pattern from a continuum mechanical computation

Bottoni

Dufour

Giry

2015

Engineering Structures

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“…Bei der Betrachtung von Sicherheitsaspekten in Kernkraftwerken über ihre gesamte Betriebs‐ und Stilllegungsdauer spielt die Dichtheit des Containments im Störfall eine bedeutende Rolle. Containments aus Stahlbeton bilden im Regelfall die finale Barriere gegen möglicherweise austretende Medien, insbesondere in Anlagen ohne Stahlinnenliner, wie sie unter anderem in Frankreich existieren . Im Störfall kann dabei nicht ausgeschlossen werden, dass durch die auftretenden hohen Drücke und Temperaturen Betonrisse im Containment entstehen.…”

Section: Introductionunclassified

Leckageverhalten von gerissenem Beton – eine mehrskalige Betrachtung

Zemann

Herrmann

Dehn

2019

Beton und Stahlbetonbau

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Bei der Betrachtung von Sicherheitsaspekten in Kernkraftwerken über ihre gesamte Betriebs‐ und Stilllegungsdauer spielt der Aspekt der Dichtheit des Containments eine bedeutende Rolle. Selbstheilende Effekte im Beton können hierbei entscheidend dazu beitragen, die Kontamination der Umwelt zu vermeiden. An der Materialprüfungs‐ und Forschungsanstalt (MPA Karlsruhe) des Karlsruher Instituts für Technologie (KIT) wurden in den vergangenen Jahrzehnten Durchströmungsexperimente mit Luft und Dampf an Betonprobekörpern sowohl im Labormaßstab als auch im Realmaßstab durchgeführt. Die Versuchsbedingungen entsprachen realistischen Temperaturen und Drücken, die in anzunehmenden Unfallszenarien auftreten können. Der vorliegende Artikel gibt einen Überblick über Versuchsergebnisse, die im Rahmen mehrerer Forschungsvorhaben gewonnen wurden, und soll darüber hinaus Erklärungsansätze für bisher inkonsistente Ergebnisse der Großversuche liefern, die unter Berücksichtigung der Ergebnisse der kleinskaligen Versuche neu diskutiert werden.

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“…For this reason, a scheme of optical crack profile (OCP) originated through DIC experiment, based on analysis and interpretation of strain data, is implemented in the present model structure. A number of containment model over‐pressure tests have been reported to address the structural integrity issues related to the nuclear containment structures using conventional strain gauges, which could identify the critical locations and global failure modes of the structure. However, the identification of the crack formation, its trajectories during the crack propagation in case of over‐pressure tests, reveals additional information for the fracture characterization and structural integrity assessment of the containment structure.…”

Section: Introductionmentioning

confidence: 99%

Structural integrity assessment of nuclear containment through fracture characterization

Trivedi

Singh

2018

Fatigue Fract Eng Mat Struct

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The paper deals with the study of structural response of partially cracked nuclear containment model structure in over pressurized condition with the simulated experiments conducted under severe accidents analysis program for Indian nuclear containment structures. In this research, the fracture characterization of concrete containment structure is also investigated through the over pressure experiments on the BARC Containment (BARCOM) test model structure, which represents 1:4 scale of the prototype 540 MWe Tarapur pre‐stressed nuclear containment structure. In addition to the surface‐type electrical resistance, strain gauges conventionally and commonly deployed for containment proof‐test and ultimate load capacity evaluation of containment models, embedded vibratory wire strain gauges (VWSGs), the digital image correlation (DIC) technique, and soap bubble tests are employed in this study. For fracture characterization, an optical crack profile (OCP) technique is developed through DIC full‐field experiment conducted at the identified critical locations with conventional strain gauges to evaluate the fracture energy and the characteristics of the fracture process zone of concrete containment model structure subjected to the over‐pressure condition for its performance assessment in the case of the beyond design basis accidents. The combination of conventional sensors and full‐field DIC deployed for the first time on the largest scale containment model along with the associated analysis is shown to be effective in fracture characterization and improved structural integrity assessment of the containment model.

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Containment Evaluation under Severe Accidents (CESA): synthesis of the predictive calculations and analysis of the first experimental results obtained on the Civaux mock-up

Cited by 24 publications

References 0 publications

Topological search of the crack pattern from a continuum mechanical computation

Topological search of the crack pattern from a continuum mechanical computation

Leckageverhalten von gerissenem Beton – eine mehrskalige Betrachtung

Structural integrity assessment of nuclear containment through fracture characterization

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