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Journal Articles

The CIELO collaboration; Progress in international evaluations of neutron reactions on Oxygen, Iron, Uranium and Plutonium

Chadwick, M. B.*; Capote, R.*; Trkov, A.*; Kahler, A. C.*; Herman, M. W.*; Brown, D. A.*; Hale, G. M.*; Pigni, M.*; Dunn, M.*; Leal, L.*; et al.

EPJ Web of Conferences, 146, p.02001_1 - 02001_9, 2017/09

 Times Cited Count:6 Percentile:97.85

The CIELO collaboration has studied neutron cross sections on nuclides ($$^{16}$$O, $$^{56}$$Fe, $$^{235,238}$$U and $$^{239}$$Pu) that significantly impact criticality in nuclear technologies with the aim of improving the accuracy of the data and resolving previous discrepancies in our understanding. This multi-laboratory pilot project, coordinated via the OECD/NEA Working Party on Evaluation Cooperation (WPEC) Subgroup 40 with support also from the IAEA, has motivated experimental and theoretical work and led to suites of new evaluated libraries that accurately reflect measured data and also perform well in integral simulations of criticality.

Journal Articles

Model calibration of small and large-scale laboratory THM experiments of the MX-80 bentonite

Chijimatsu, Masakazu*; B$"o$rgesson, L.*; Fujita, Tomo; Hernelind, J.*; Jussila, P.*; Nguyen, T. S.*; Rutqvist, J.*; Jing, L.*

Proceedings of 2nd International Conference on Coupled T-H-M-C Processes in Geo-systems; Fundamentals, Modeling, Experiments and Applications (GeoProc 2006), p.254 - 260, 2006/05

In Task A of DECOVALEX-THMC, five research teams study the influence of THM coupling on the safety of the near-field of a typical geological repository for high-level radioactive waste. In order to refine the analyses, the teams calibrated their models with laboratory experiments, including: swelling pressure tests, water uptake tests, thermally gradient tests, and the CEA mock-up THM experiment. This paper describes the mathematical models used by the teams, and compares the results of their calibration with the experimental data.

Journal Articles

Influence of coupled THM phenomena on the safety of a spent fuel repository; A Near-field study

Nguyen, T. S.*; B$"o$rgesson, L.*; Chijimatsu, Masakazu*; Fujita, Tomo; Hernelind, J.*; Jussila, P.*; Rutqvist, J.*; Jing, L.*

Proceedings of 2nd International Conference on Coupled T-H-M-C Processes in Geo-systems; Fundamentals, Modeling, Experiments and Applications (GeoProc 2006), p.141 - 149, 2006/05

In order to demonstrate the feasibility of geological disposal of spent CANDU fuel in Canada, a safety assessment was performed for a hypothetical repository in the Canadian Shield. The assessment shows that such repository would meet international criteria for dose rate; however, uncertainties in the assumed evolution of the repository were identified. Such uncertainties could be resolved by the consideration of coupled Thermal-Hydro-Mechanical-Chemical (THMC) processes. In Task A of the DECOVALEX-THMC project, THM models will be refined and used to perform near-field simulations of the evolution of the repository in order to address the above uncertainties. This paper presents the definition and rationale of Task A and the preliminary results.

Journal Articles

Evaluation of THM Coupling on the Safety Assessment of a Nuclear Fuel Waste Repository in a Homogenous Hard Rock

Millard, A.*; Rejeb, A.*; Chijimatsu, M.*; Jing, L.*; De Jonge, J.*; Kohlmeier, M.*; Sugita, Yutaka

P.199-204, p.199 - 204, 2003/00

None

Journal Articles

Implications of Coupled Thermo-Hydro-Mechanical Processes on the Safety of a Hypothetical Nuclear Fuel Waste Repository

Nguyen, T. S.; Chijimatsu, M.*; De Jonge, J.*; Jing, L.*; Kohlmeier, M.*; Millard, A.*; Sugita, Yutaka

P.212-217, p.212 - 217, 2003/00

None

Journal Articles

Evaluation of the Impact of Thermo-Hydro-Mechanical Coupling in Bentonite and Near-Field Rock Barriers of a Nuclear Waste Repository in a Sparsely Fractured Hard Rocks

Rutqvist, J.; Jing, L.*; Chijimatsu, M.*; Millard, A.*; Nguyen, T. S.*; Rejeb, A.*; Sugita, Yutaka

Proceedings of International Conference on Coupled T-H-M-C Processes in Geo-systems; Fundamentals, Modelling, Experiments and Applications (GeoProc 2003), p.205 - 211, 2003/00

None

Journal Articles

Coupled thermo-hydro-mechanical analysis of a heater test in fractured rock and bentonite at Kamaishi mine-comparison of field results to predictions of four finite element codes

Sugita, Yutaka; Rutqvist, J.*; B$"o$rgesson, L.*; Chijimatsu, Masakazu*; Nguyen, T. S.*; Jing, L.*; Noorisha, J.*; Tsang, C.-F.*

International Journal of Rock Mechanics and Mining Sciences, 38(1), p.129 - 142, 2001/00

no abstracts in English

Journal Articles

Hydro-mechanical response of a fractured granitic rock mass to excavation of a test pit-the Kamaishi mine experiment in Japan

Sugita, Yutaka; Nguyen, T. S.*; B$"o$rgesson, L.*; Chijimatsu, Masakazu*; Rutqvist, J.*; Fujita, Tomo; Hernelind, J.*; Kobayashi, Akira*; Onishi, Yuzo*; Tanaka, Makoto*; et al.

International Journal of Rock Mechanics and Mining Sciences, 38(1), p.79 - 94, 2001/00

None

Journal Articles

Thermo-hydro-mechanical characterization of a bentonite-based buffer material by laboratory tests and numerical back analyses

B$"o$rgesson, L.*; Chijimatsu, Masakazu*; Fujita, Tomo; Nguyen, T. S.*; Rutqvist, J.*; Jing, L.*

International Journal of Rock Mechanics and Mining Sciences, 38(1), p.95 - 104, 2001/00

 Times Cited Count:55 Percentile:90.81(Engineering, Geological)

None

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