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Predictive and Inve...
Predictive and Inverse Modeling of a Radionuclide Diffusion Experiment in Crystalline Rock at ONKALO (Finland)
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- Soler, Josep M. (författare)
- IDAEA-CSIC, 08034, Barcelona, Spain
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- Kekäläinen, Pekka (författare)
- University of Helsinki, FI-00014, Helsinki, Finland
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- Pulkkanen, Veli Matti (författare)
- VTT Technical Research Centre of Finland Ltd, FI-02044, VTT, Finland, VTT
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- Moreno, Luis (författare)
- KTH,Kemisk apparatteknik
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- Iraola, Aitor (författare)
- Amphos 21, 08019, Barcelona, Spain
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- Trinchero, Paolo (författare)
- Amphos 21, 08019, Barcelona, Spain
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- Hokr, Milan (författare)
- Technical University of Liberec, 461 17, Liberec 1, Czech Republic
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- Říha, Jakub (författare)
- Technical University of Liberec, 461 17, Liberec 1, Czech Republic
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- Havlová, Václava (författare)
- ÚJV Řež, a.s, 250 68, Husinec, Czech Republic
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- Trpkošová, Dagmar (författare)
- ÚJV Řež, a.s, 250 68, Husinec, Czech Republic
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- Vetešník, Aleš (författare)
- Czech Technical University in Prague, 160 00, Prague 6, Czech Republic
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- Vopálka, Dušan (författare)
- Czech Technical University in Prague, 160 00, Prague 6, Czech Republic
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- Gvoždík, Libor (författare)
- Progeo, 252 63, Roztoky, Czech Republic
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- Milický, Martin (författare)
- Progeo, 252 63, Roztoky, Czech Republic
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- Polák, Michal (författare)
- Progeo, 252 63, Roztoky, Czech Republic
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- Fukatsu, Yuta (författare)
- Japan Atomic Energy Agency (JAEA), Tokai-mura, Naka-gun, Ibaraki, 319-1184, Japan, Tokai-mura, Naka-gun
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- Ito, Tsuyoshi (författare)
- Japan Atomic Energy Agency (JAEA), Tokai-mura, Naka-gun, Ibaraki, 319-1184, Japan, Tokai-mura, Naka-gun
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- Tachi, Yukio (författare)
- Japan Atomic Energy Agency (JAEA), Tokai-mura, Naka-gun, Ibaraki, 319-1184, Japan, Tokai-mura, Naka-gun
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- Svensson, Urban (författare)
- Computer-aided Fluid Engineering AB, 371 65, Lyckeby, Sweden
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- Park, Dong Kyu (författare)
- Korea Atomic Energy Research Institute (KAERI), Daejeon, 3405, Republic of Korea
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- Ji, Sung Hoon (författare)
- Korea Atomic Energy Research Institute (KAERI), Daejeon, 3405, Republic of Korea
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- Gylling, Björn (författare)
- Gylling GeoSolutions, Evanston, Illinois, 60203
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- Lanyon, G. William (författare)
- Fracture Systems Ltd, St Ives, Cornwall, TR26 1EQ, United Kingdom
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(creator_code:org_t)
- Informa UK Limited, 2023
- 2023
- Engelska.
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Ingår i: Nuclear Technology. - : Informa UK Limited. - 0029-5450 .- 1943-7471. ; 209:11, s. 1765-1784
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The REPRO-TDE test was performed at a depth of about 400 m in the ONKALO underground research facility in Finland. Synthetic groundwater containing radionuclide tracers [tritiated water tracer (HTO), 36Cl, 22Na, 133Ba, and 134Cs] was circulated for about 4 years in a packed-off interval of the injection borehole. Tracer activities were additionally monitored in two observation boreholes. The test was the subject of a modeling exercise by the SKB GroundWater Flow and Transport of Solutes Task Force. Eleven teams participated in the exercise, using different model concepts and approaches. Predictive model calculations were based on laboratory-based information concerning porosities, diffusion coefficients, and sorption partition coefficients. After the experimental results were made available, the teams were able to revise their models to reproduce the observations. General conclusions from these back-analysis calculations include the need for reduced effective diffusion coefficients for 36Cl compared to those applicable to HTO (anion exclusion), the need to implement weaker sorption for 22Na compared to results from laboratory batch sorption experiments, and the observation of large differences between the theoretical initial concentrations for the strongly sorbing 133Ba and 134Cs, and the first measured values a few hours after tracer injection. Different teams applied different concepts, concerning mainly the implementation of isotropic versus anisotropic diffusion, or the possible existence of borehole disturbed zones around the different boreholes. The role of microstructure was also addressed in two of the models.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- diffusion
- field experiment
- Radionuclides
- sorption
- modeling
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Soler, Josep M.
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Kekäläinen, Pekk ...
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Pulkkanen, Veli ...
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Moreno, Luis
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Iraola, Aitor
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Trinchero, Paolo
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Hokr, Milan
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Říha, Jakub
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Havlová, Václava
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Trpkošová, Dagma ...
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Vetešník, Aleš
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Vopálka, Dušan
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Gvoždík, Libor
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Milický, Martin
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Polák, Michal
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Fukatsu, Yuta
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Ito, Tsuyoshi
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Tachi, Yukio
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Svensson, Urban
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Park, Dong Kyu
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Ji, Sung Hoon
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Gylling, Björn
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Lanyon, G. Willi ...
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