Tome Architecture and management of a geological repository - Andra

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6 – C waste repository zoneCOMPONENTConnecting driftsbetween accessstructures from thesurface andrepository modulesDrifts in themodules (cellaccess drifts andexploratorystructures)Backfill and sealsof the repositorymodule driftsCell:disposal cavityCsmallboreholeswaste:verticalSteel over-pack forC wasteClay engineeredbarriers of the Cwaste disposalboreholesPERIODBefore andduring operationand reversiblerepositorymanagementBefore andduring operationand reversiblerepositorymanagementAfter closureDuring operationand reversiblemanagementAfter closureDuring operationand reversiblemanagementAfter closure(thermal phase)After closureMAIN REPOSITORYFUNCTIONS2. ENGINEERED COMPONENTSEmplacing (and beingable to retrieve) thepackages in the graniteEmplacing (and be able toretrieve) the packages inthe graniteProtecting the repositorymodules from watercirculationDelaying and reducingradionuclides migration tothe environmentEmplacing (and beingable to retrieve) thepackages in the graniteRestricting radionucliderelease by the primarypackagesandimmobilising themEmplacing (and beingable to retrieve) thepackages in the granite(with sleeve andoperating plug)Preventing water cominginto contact with the glass(and the release ofradionuclides)Protecting the disposalcells from watercirculationDelaying and reducingradionuclides migration tothe environmentPROPERTIES HARNESSEDDimensions adjusted to package throughputDrift equipment that ensures safe operationSuitable dimensions for package throughput andgranite characteristicsDrift equipment that ensures safe operationLow permeabilitySwelling capacityRadionuclide retentionDimensions adapted to the granite fracturing andhandling technologiesProperties of the various components: packages,engineered barriers, backfillMechanical strengthSuitable dimensions for handling themWater-tightness throughout at least the thermalphase (1000 years)Very low permeabilitySwelling capacity and plasticity (providing thelong-term mechanical stability of the cell)Chemical buffer to interactions between thegranite water and the component alterationproductsRadionuclide retentionDossier 2005 granite - ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL REPOSITORY192/228
77Spent fuel repository zone7.1 Spent fuel assemblies .....................................................................................................1947.2 Safety options for the design of a spent fuel repository..............................................1987.3 The spent fuel canisters .................................................................................................2037.4 The disposal cells............................................................................................................2097.5 Architecture of the spent fuel repository zone ............................................................2127.6 Disposal process as part of the reversibility approach ...............................................2147.7 Functions of the repository components over time.....................................................218Dossier 2005 granite - ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL REPOSITORY193/228
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The present English version is a tr
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Contents4.1 Surface installations..
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Contents7.2.1 Harnessing the favour
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ContentsFigure 5.1.7 Non-alloy stee
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ContentsFigure 7.6.3 CU package emp
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11Study approach1.1 The main stages
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1 - Study approachSome studies were
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1 - Study approachIn France spent f
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2 - High-Level and Long-Lived waste
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3 - Design study of a repository in
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44General architecture of thereposi
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5 - B waste repository zoneThis cha
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5 - B waste repository zoneproduced
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5 - B waste repository zoneFigure 5
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5 - B waste repository zonerepaired
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5 - B waste repository zone5.1.4 Ce
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5 - B waste repository zonein the o
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5 - B waste repository zoneThe pack
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5 - B waste repository zoneTable 5.
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5 - B waste repository zone5.2 Safe
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5 - B waste repository zone• Inst
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5 - B waste repository zoneConcrete
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5 - B waste repository zone5.3.3 Co
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5 - B waste repository zonelinked t
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5 - B waste repository zone5.3.4.2
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5 - B waste repository zoneOn the a
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5 - B waste repository zonegeometri
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5 - B waste repository zoneTable 5.
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5 - B waste repository zoneLinéair
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5 - B waste repository zonePillar t
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5 - B waste repository zoneThis env
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Page 156 and 157: 5 - B waste repository zoneDossier
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Page 174 and 175: 6 - C waste repository zone6.3.3.2
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Page 182 and 183: 6 - C waste repository zone6.6 Disp
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Page 186 and 187: 6 - C waste repository zoneThe slee
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Page 225 and 226: Références bibliographiquesRefere
Page 227 and 228: Références bibliographiques[39] A
Page 229 and 230: Photo Credits:ANDRA - SKB - NAGRA -
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Tome Architecture and management of a geological repository - Andra

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