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EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01

EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01. Waste and Disposal Department SCK•CEN B. Neerdael. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01. Main experimental research fields and items Waste Packages Characterisation, inventory Compatibility in clay (forms, containers)

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EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01

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  1. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01 Waste and Disposal Department SCK•CEN B. Neerdael

  2. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01 • Main experimental research fields and items • Waste Packages • Characterisation, inventory • Compatibility in clay (forms, containers) • Near-field • Engineered Barrier System (EBS) • Excavated Disturbed zone (EDZ) • Other potential disturbances • Far-field • Clay layer (retardation/retention properties) • Aquifer system (dilution function)

  3. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01

  4. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01 • Waste Packages - Programme overview (1) • Glass (COGEMA, EUROCHEMIC) • Corrosion mechanisms, leaching behaviour of Np, Tc • PhD work on complexation of Np (IV) with H.A. • CORALUS in-situ project (10 y testing) • Bitumen (Eurobitum), Cellulose • Effect of degradation products on solubility of Am, Pu

  5. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01 • Waste Packages - Programme overview (2) • Spent fuel • Reactivity of doped UO2 in clay media • Effect of -radiolysis on UO2 corrosion • Container • Sensitivity to localised corrosion of stainless steel (AISI 316L hMo) • R&D on cemented waste

  6. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01 • Near-field - Programme • EBS • Backfill/sealing using clay-based material (blocks, pellets) • EDZ (main objective of the PRACLAY project) • Mechanical and chemical stability to be controlled • Coupled processes to be considered (THM-C) • Other disturbances w.r.t. long term safety • Gas release (flow rates, pressure build-up) • Chemistry (alkaline plume, etc)

  7. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01 • Far-field programme (1) • Migration in clay • Process definition & understanding, collection of reliable data (lab, field) • Study of the dual role of O.M. in sorption/complexation processes • Special attention to redox-sensitive elements (Se, U) including code development • Large scale in situ injection tests, e.g. test running at CP1 piezonest since 1988 • Development and assessment of electrokinetic methods

  8. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01 • Far-field programme (2) • Shaft sealing • RESEAL test • Demonstration of water- and gas-tightness of a seal plug using pellets • Hydrogeology • Update regional hydrogeological model • Evaluation of additional data acquisition campaign • Study on BC homogeneity

  9. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01 • Performance Assessment (P.A) studies • Aimed at demonstrating the safety of a disposal system • Based on experimental data (waste packages, near- and far-field), reference concepts and scenarios study. • Developed for all waste types (LLW, HLW, Spent Fuel) • To be mentioned w.r.t EIG: EC BENIPA project « Treatment of the near-field in P.A «  • Contribution of the Dept to the fusion programme (WP) • Be reactivity • Be-waste conditioning

  10. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01 • Contribution to confidence building • Demo/validation large scale integrated tests (HADES) • Natural analogues studies on Boom Clay • Geoprospective studies • Contribution to public acceptance: participation to the SCK•CEN human sciences programme • Intergenerational Ethics • How to deal with uncertainties ? Cognitive Dissonnance Analysis (CDA)

  11. EIG EURIDICE - SCK•CEN - ONDRAF/NIRAS 31/05/01 • Valorisation • CH: partnership in Mont Terri project • Central-Eastern Europe: P.A studies (MEA/Belgatom) • F: Bure URL (C.O.S/ DIR expt/ EC MODEX-REP project) • F: GdR FORPRO (ANDRA/CNRS) • Future*: JAP, SP, NL, D ? • Working Groups • EC: concerted actions, thematic networks, ERA (6FP) • NEA/OECD: IGSC, Clay Club • IAEA: URL network (in negociation*) (*) with NIRAS/ONDRAF & EIG Euridice

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