Facility Details: COLIMA

Organization / Localization: CEA
Country:
Facility Status:
Focus area 1: Fission product release (including in-vessel, ex-vessel) (1)
Facility Description: simulate severe accident conditions in a nuclear reactor by melting and solidifying prototypical corium
Test Identification: CA-U3
SA-Related Topics / Phenomena:
Measured Parameters: Concrete crack dimensions, pressure drop, gas temperature, aerosol concentration and composition.
Modelling: ~3033K for ~50 minutes. Ar-2%H2 reducing atmosphere
Simulation Code: LAERT ECART
Experimental Research Program: EURATOM 5th Framework Programme project relative to the “Transnational Access to the PLINIUS platform”
Link to PIRT: WP-1.5 ST-5
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References: [1] NEA, «Containment Code Validation Matrix», OECD Publishing, 2014, Paris
[2] S. Morandi et al., Aerosol retention in containment leak paths: indications for a code model in the light of COLIMA experimental results, Eur. Rev. Mtg., Severe Acc. Res., ERMSAR 2012, Cologne, Germany, March 2012.
[3] F. Parozzi et al., «Investigation on aerosol transport in containment cracks». Proceedings of the International Conference Nuclear Energy for New Europe 2005, Slovenia
[4] F. Parozzi, et al., «The COLIMA experiment on aerosol retention in containment leak paths under severe nuclear accidents», Nuclear Engineering and Design, vol. 261, p. 346-351, 2013,
https://doi.org/10.1016/j.nucengdes.2012.12.012.
[5] C. Journeau et al., «The PLINIUS/COLIMA CA-U3 test on fission-product aerosol release over a VVER-type corium pool», https://inis.iaea.org/collection/NCLCollectionStore/_Public/39/093/39093483.pdf
https://doi.org/10.1016/j.nucengdes.2010.01.008
Comments: Comparison with ASTEC/ELSA

Focus area 4: Fission product mitigation actions (e.g. FCVS, spray) and containment bypass scenarios (1)
Facility Description: 300x130x0.5mm crack
Test Identification: CA-U4
SA-Related Topics / Phenomena:
Measured Parameters:
Modelling: ~0.1 g/m3 aerosols ; 0.2 MPa pressure difference
Simulation Code:
Experimental Research Program:
Link to PIRT: Performed in 2008; Experiment E5-25 of CCVM.
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Implemented as part of the Seaknot EU funded project (HORIZON-EURATOM-2021-NRT-01 under Grant Agreement No. 101060327) - WP2.6 UNIPI (2024-2026)