Architecture and management of a geological repository - Andra

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5 – Repository ModulesFigure 5.1.13Structural ring and filler concreteThe slab is not reinforced and is integral with the lining. It is fitted with rails for handling packages.Two ventilation ducts 600 mm in diameter are arranged in the filler concrete (Figure 5.1.14). The cellend is specifically equipped for the needs of ventilation. It is equipped throughout the section with awall pierced by holes, which, due to its high aeraulic strength and the position of the holes, is capableof regulating airflow in the cell. The ventilation ducts behind this wall ensure air return in the cell.The cell end is spherical in shape. The ground support comprises 2.40 m long sub-horizontal rockboltsand 25 cm of shotcrete. The concrete lining is lightly reinforced at the junction of the end and the mainsection.Figure 5.1.14Longitudinal and cross section of the cell endDOSSIER 2005 ARGILE -ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL DISPOSAL SYSTEM174/495
5 – Repository Modules• Arrangement of packages in the cellAll the disposal packages placed in the same cell have the same dimensions 69 . According to their size,they are arranged on 3 or 4 levels and over 2 to 4 columns in the crosswise direction of the cell (Figure5.1.15). A clearance of 15 cm is left between the top of the packages and the roof of the handlingchamber. A clearance of 10 cm is left crosswise between the package columns and between thepackages and the vertical walls of the handling chamber. The clearances are reduced to the minimumin the longitudinal direction. These clearances are sufficient for package handling and cell ventilation.With this spacing, the gaps between packages represent approximately 5% of the excavated section ofthe cell. It should be noted that it would be possible to reduce these gaps still further by inserting afiller block about ten centimetres thick above each stack of packages, and by reducing the spacingbetween package columns through improving the precision of the handling system.Figure 5.1.15Arrangement of packages in the cell• Description of the equipment of the cell head (before sealing)B cells are equipped with an airlock at the cell head (Figure 5.1.16). Its function is to provideradiological protection for personnel during operations for extracting packages from their transfertransfer cask and disposal (or withdrawal). The handling equipment used for these operations isremotely controlled from outside the airlock.The airlock is formed by two doors. The outer door (on the access drift side) is equipped with awindow onto which the transfer transfer cask is docked. This door is also used for the exit and entry ofthe handling truck in the airlock. The inner door (on the cell body side) is formed of several slidingpanels for the passage of this same truck for transferring packages to their repository location in thecell. The airlock thus formed between the two doors is fitted with a moving floor and a rotating table,which enable the handling truck to manoeuvre in a restricted space.The airlock is ventilated via ducts connected to the pipes in the cell body and via shielded baffles inthe airlock doors.69In some instances, packages of the same height and width (crosswise to the cell) but of different lengths (lengthwise to the cell) can beused. In this case, the packages are arranged by homogeneous zones within the cell.DOSSIER 2005 ARGILE -ARCHITECTURE AND MANAGEMENT OF A GEOLOGICAL DISPOSAL SYSTEM175/495
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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 PackagesFigure 4
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4 - Waste disposal Packages4.1.5 Th
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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 ModulesFigure 5.3.8
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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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7 - The shafts and the driftsThe co
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7 - The shafts and the drifts7.2.2
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7 - The shafts and the driftsFigure
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7 - The shafts and the drifts7.3.3.
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7 - The shafts and the drifts7.4 De
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7 - The shafts and the driftsThe dr
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7 - The shafts and the drifts7.7 Cl
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7 - The shafts and the driftspressu
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88Surface installations8.1 General
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8 - Surface installationsFigure 8.1
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8 - Surface installationsSuch a bui
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8 - Surface installationsApart from
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9 - Nuclear operating resources in
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1010 Reversible repositorymanagemen
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During the operational phase, the d
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Figure 10.1.1Key repository operati
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The radioactive elements can thus b
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Furthermore, equipment and liner ma
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The condition of the access drifts
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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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