The Second Safety Assessment and Feasibility Interim Report (SAFIR 2 Report) on HLW Disposal in Boom Clay: Overview of t
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Robert Gens1, Philippe Lalieux1, Peter De Preter1, Ann Dierckx1, Johan Bel, Jean-Paul Boyazis1 and Wim Cool1 1 Ondraf/Niras, Avenue des Arts, 14 1210 Brussels, Belgium $%675$&7
ONDRAF/NIRAS – the Belgian radioactive waste management agency – has published in 2001 the SAFIR 2 report on request of the authorities. The SAFIR 2 report is to be considered as a state-of-the art report and not as a complete safety case. This report gives an overview of the Belgian R&D program related to the geological disposal of HLW and ILW for the period 19902000 in the Boom Clay (reference host rock). The three main outcomes of the SAFIR 2 report on which this paper will be more specifically focusing, are the following (including results reported after 2000) : long-term safety functions, confirmation of the role of the Boom Clay formation as the main barrier and identification of practical difficulties with respect to technical feasibility (repository design). ,1752'8&7,21 ONDRAF/NIRAS – the Belgian radioactive waste management agency – has published in 2001 the SAFIR 2 report on request of the authorities [1]. The SAFIR 2 report is to be considered as a state-of-the art report and not as a complete safety case. This report gives an overview of the Belgian R&D program related to the geological disposal of HLW and ILW for the period 1990-2000 in the Boom Clay (reference host rock). The Boom Clay is a poorly indurated silty-clay formation of Rupelian age at a depth between ~ 290 m and 190 m beneath the Mol-Dessel nuclear zone which is the reference site for methodological R&D research programme. The research and development programme on geological disposal of conditioned long-lived radioactive waste started in 1974 at the Research Center for Nuclear Energy (SCKCEN) at Mol. Since 1985, ONDRAF has supplied the guidelines for research and development and for a demonstration programme. A first SAFIR Report was released in 1989 covering the period 1974-1989. The underground research laboratory (URL HADES) is operational since 1984 [2]. The prime aim of this research programme was, and still is, to establish if it is feasible, both technically and financially, to design and build on Belgian territory a deep disposal solution for category B and C waste that is safe, without making any presumption on the site where such a solution would actually be implemented. Beside the Boom Clay formation, the Ypresian Clay under the Doel nuclear zone is also investigated, although in a far lesser extent, as alternative site. The future strategy for developing and implementing a final repository will rely on a stepwise approach [3]. A general overview of the SAFIR 2 report has been reported in [4]. The performance assessments aspects were already discussed in a previous paper [5]. Therefore, the three main outcomes of the SAFIR 2 report on which this paper will be more specifically focusing, are the following (inc
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