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Figure 4: Pore water pressure changes (in response to the heating) with typical behaviour when
heating power changes.
4. Conclusions
The first heating campaign of the ATLAS heater test has already pointed to some aspects that have
been underexposed until now, such as the anisotropy of the thermal conductivity and of mechanical
properties. The PRACLAY Heater Test will constitute an important field database for the validation
of the numerical tools being developed in the frame of the EC project TIMODAZ. The first year's
test results will further also provide input for the Belgian Safety and Feasibility Case no. 1 (SFC1),
an important milestone in the Belgian programme for HLW disposal.
5. Acknowledgements
The whole PRACLAY project is managed by EIG EURIDICE with the financial contribution from
NIRAS/ONDRAF. Several parts have been and are co-financed by the European Commission as
part of the sixth Euratom research and training Framework Programme (FP6) on nuclear energy
(2002-2006).
References
pressure drop is predicted when mechanical anisotropy is assumed
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