Architecture and management of a geological repository - Andra

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8 – Surface installationsThis industrial zone is developed progressively based on the changing needs of the underground work.For example, the backfill preparation installations may only be built once the decision to close hasbeen taken.The surface installations for site management and administration are grouped around the personneltransfer shaft. These are basically office buildings, a central emergency building and a "living" spacefor the personnel working on the site (cloakrooms, showers, canteens, etc.).8.4 Broken rock storage dumpBroken rocks from the excavation sites are stored in a dump built at the edge of the working zone.These broken rocks are re-used as much as possible to make up the repository closing backfill, to aheight of around 40%. The remainder of the broken rocks stays on the surface 131 .• Brief assessment of the surface areaThe broken rock storage dump represents a volume of several million cubic metres; this volume (andeven more) is frequently found in open-cast mines. As the date for backfilling is not fixed in advance,the surface area for a dump capable of holding all the broken rock has been estimated.As there is no defined dump site, only the general dump management principles can be given, that willsubsequently be adapted to the site topography. A compromise will have to be found between thedump height and its surface area, as a dump can be more flexible to manage if it’s height is lower. Atthis stage in the studies, a low-lying dump has been considered, around ten metres high. The dumpsurface area could therefore be in the region of between 100 and 300 hectares.• General dump design and operation principlesThe dump project should be studied for its greatest integration with the landscape and thehydrographic network.Scraping off the topsoil and using it torevegetable the dump3 Landscaped andrevegetated dump2 Placement ofbroken rock1 Preparationof surfaceDirection of progress of the dumpFigure 8.4.1Dump operating principle per sectionA dump is generally operated in sections. The scraping and surfacing operations, constructing thedrainage network, placing the broken rock and covering the soils follow on from each other andprogress with the development of the dump.131 The difference compared with 100% is explained by the volume occupied by the disposal packages and the engineered structure liners,and by the "swell factor" effect of the backfillDOSSIER 2005 ARGILE -ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL DISPOSAL SYSTEM326/495
8 – Surface installationsApart from the geometric aspects, the dump is mainly designed to ensure the stability of the brokenrock and prevent rainwater from percolating into the stored materials.Preparatory earthworks, scraping off the topsoil, creating subgrade and building ditches, slopes andcollection and settlement basins are necessary. A specific site organisation has to be implemented tolimit the exposure time of the active part of the dump to weathering.Lastly, the topsoil from the scraping of the various zones where the surface installations and dump arebuilt is assembled and stored near the dump. It is used as and when necessary to cover the dumpbefore revegetating.• Recovering broken rocks from the dump for backfilling operationsBroken rocks can also be recovered for backfilling operations by section, similar to the way in whichthe dump was first organised.The backfill materials recovered from a dump must be conditioned before their re-use. Thisconditioning covers in particular regularisation of the granulometry and humidity of the backfillmaterials.DOSSIER 2005 ARGILE -ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL DISPOSAL SYSTEM327/495
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Report SeriesTomeArchitectureand ma
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C.RP.ADP.04.00013/495ContentsConten
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C.RP.ADP.04.00015/4955.3.2 Design p
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C.RP.ADP.04.00017/4959.2.3 The tran
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C.RP.ADP.04.00019/495Bibliographic
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C.RP.ADP.04.000111/495Table of illu
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C.RP.ADP.04.000113/495Figure 4.3.8
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C.RP.ADP.04.000115/495Figure 5.3.9F
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C.RP.ADP.04.000117/495Figure 9.2.2
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C.RP.ADP.04.000119/495Figure 10.4.8
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C.RP.ADP.04.000121/495Table 11.6.1T
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1 - The Study Approach1.1 Purpose o
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1 - The Study ApproachFrom 1999 to
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1 - The Study Approach1.4 Structure
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2 - General DescriptionThis chapter
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2 - General DescriptionHLLL waste p
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2 - General DescriptionFor a transi
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2 - General DescriptionIt should al
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2 - General Description2.2.2.2 Safe
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2 - General DescriptionThe protecti
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2 - General DescriptionIt should al
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2 - General DescriptionThis section
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2 - General Descriptionfollowing th
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2 - General Description2.3.2.2 Geoc
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2 - General DescriptionFigure 2.3.5
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2 - General DescriptionIn the Dogge
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2 - General Description• A dimens
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2 - General Description2.4.1.2 Desi
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2 - General Description- some conne
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2 - General DescriptionAs for the w
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2 - General DescriptionThe figure b
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33High-level long-lived waste3.1 Wa
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3 - High Level Long-Lived WasteRese
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3 - High Level Long-Lived Wastesupp
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3 - High Level Long-Lived WasteThe
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3 - High Level Long-Lived WasteFigu
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3 - High Level Long-Lived WasteA fi
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3 - High Level Long-Lived WasteA se
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3 - High Level Long-Lived WasteVitr
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3 - High Level Long-Lived WasteCond
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3 - High Level Long-Lived WasteDist
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3 - High Level Long-Lived Waste3.3.
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3 - High Level Long-Lived WasteTabl
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44Waste disposal packages4.1 B disp
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4 - Waste disposal PackagesFor empl
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4 - Waste disposal Packages• Safe
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4 - Waste disposal Packages• "Par
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4 - Waste disposal PackagesThe prin
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4 - Waste disposal PackagesThe seco
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4 - Waste disposal PackagesFigure 4
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4 - Waste disposal Packages4.1.5 Th
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4 - Waste disposal Packages4.1.5.7
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4 - Waste disposal PackagesIn the c
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4 - Waste disposal PackagesFinally,
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4 - Waste disposal PackagesThe YAG
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4 - Waste disposal PackagesIn the U
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4 - Waste disposal PackagesThe spee
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4 - Waste disposal Packages4.2.4 Ma
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4 - Waste disposal PackagesLoadSlid
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4 - Waste disposal Packages4.3 Spen
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4 - Waste disposal PackagesThe seco
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4 - Waste disposal PackagesFor both
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4 - Waste disposal Packages• Safe
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4 - Waste disposal PackagesAs for C
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4 - Waste disposal PackagesMelted c
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55Repository modules.5.1 B waste re
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5 - Repository Modules5.1.1.1 Quest
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5 - Repository Modules• Controlli
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5 - Repository ModulesFigure 5.1.1t
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5 - Repository Modules• The geome
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5 - Repository ModulesTable 5.1.1Fu
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5 - Repository ModulesFigure 5.1.9D
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5 - Repository Modules5.1.3.2 Detai
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5 - Repository Modules• Arrangeme
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5 - Repository ModulesAlthough this
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5 - Repository ModulesConnection be
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5 - Repository ModulesFurthermore,
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5 - Repository ModulesTo illustrate
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5 - Repository Modules• The acces
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5 - Repository ModulesFigure 5.1.24
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5 - Repository Modules• Limiting
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5 - Repository Modules5.2.2 Design
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5 - Repository ModulesA concept wit
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5 - Repository Modules• Orientati
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5 - Repository ModulesFigure 5.2.3O
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5 - Repository Modules5.2.3.1 Descr
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5 - Repository ModulesA minimum ann
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5 - Repository ModulesIn terms of t
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5 - Repository ModulesStorage perio
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5 - Repository ModulesSensitivity t
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5 - Repository ModulesIt must be no
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5 - Repository Modules• Disposal
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5 - Repository Modules• Assembly
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5 - Repository ModulesThe permeabil
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5 - Repository ModulesThe evolution
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5 - Repository ModulesThe lowest dr
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5 - Repository Modules• Back-fill
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5 - Repository Modules5.3.2.1 Sever
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5 - Repository ModulesFigure 5.3.4S
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5 - Repository ModulesThe cells are
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5 - Repository ModulesFinally, it s
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5 - Repository ModulesThe internal
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5 - Repository Modules• Descripti
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5 - Repository Modules- another pos
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66 Overall undergroundarchitecture6
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6 - Overall underground architectur
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Page 275 and 276: 6 - Overall underground architectur
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Page 304 and 305: 7 - The shafts and the driftsThe dr
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Page 321 and 322: 88Surface installations8.1 General
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The sleeve’s durability is improv
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10.2.2.2 “Post cell-sealing” st
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As far as long-term safety is conce
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Figure 10.2.10Diagrammatic represen
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10.3.1.1 Overview of the principal
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10.3.2.2 Monitoring of type C waste
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The project’s monitoring programm
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• Absence of a significant impact
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Dams are of particular interest whe
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The rate of operation of these sens
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• Water contentThe water content
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A similar wireless transmission tec
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Figure 10.3.9Example of monitoring
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In addition, a visual control syste
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Cell atmosphere monitoring is limit
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The monitoring of the seal can be c
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• The instrumented sections and t
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The deformation measurements carrie
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10.3.9 Observation of spent fuel di
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These instrumented sections (cf. §
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The monitoring equipment embedded i
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the cell which conditions the evolu
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Figure 10.4.2Cell filled with B pac
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Ventilation of a 250-m long cell re
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• Package retrieval processOnce t
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Figure 10.4.10C Cell at end of oper
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The robot is traversed similarly to
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This operation is complete when a b
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The condition of the drift liner sh
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1111 Operational Safety11.1 Evaluat
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11 - Operational SafetyTransport tr
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11 - Operational SafetyTable 11.1.1
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11 - Operational SafetyResultsTable
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11 - Operational SafetyThe risks ar
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11 - Operational SafetyOn the surfa
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11 - Operational Safety“Honeycomb
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11 - Operational SafetyGiven the me
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11 - Operational SafetyThis risk co
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11 - Operational SafetyHydrogen emi
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11 - Operational SafetyOver and abo
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11 - Operational SafetyFigure 11.4.
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11 - Operational SafetyHowever, wit
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11 - Operational Safety11.5.2 Concl
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11 - Operational Safety11.7.1 Asses
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11 - Operational SafetySuch a damag
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11 - Operational Safety11.8.1.2 Dat
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11 - Operational SafetyIn all cases
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1212 Synthesis12.1 Simple and robus
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12 - SynthesisThe existence of unce
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12 - SynthesisTo concretely illustr
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Bibliographic references[17] Callon
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Bibliographic references[54] Andra
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Bibliographic references[88] IAEA (
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Photo Credits:ANDRA - AREVA CREATIV
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Architecture and management of a geological repository - Andra

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