Facility Details: VTT fission product transport facility

Organization / Localization: VTT
Country: Finland
Facility Status:
Focus area 2: Fission product chemistry, transport and remobilization behaviour in RCS (1)
Facility Description: Tubular flow reactor with 110 cm long and had two heating zones, each 40 cm long. The tube material in the reactor was high purity alumina.
Test Identification: Experiments enumerated from 1 to 6.
SA-Related Topics / Phenomena:
Measured Parameters: Gas volumetric flow rate, number size distribution, tellurium, sodium hydroxide, caesium and iodine mass, and electron binding energies for compound/ions identification (Te, I, Cs)
Modelling: Gas type (air or nitrogen), temperature 1500K, humidity level and pressence or not of caesium iodide
Simulation Code: Not found
Experimental Research Program: MANTRA Project within the SAFIR2022 (The Finnish Research Programme on Nuclear Power Plant Safety 2019–2022)
Link to PIRT: ST12, ST13
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References: [1] F. Espegren et al., Tellurium transport in the RCS under conditions relevant for severe nuclear accidents, Progress in Nuclear Energy,
139, 103815, 2021, https://doi.org/10.1016/j.pnucene.2021.103815.
[2] T. Kärkelä et al., Mitigation and analysis of fission products transport (MANTRA), SAFIR2022 Interim Seminar 18-19.3.2021




Implemented as part of the Seaknot EU funded project (HORIZON-EURATOM-2021-NRT-01 under Grant Agreement No. 101060327) - WP2.6 UNIPI (2024-2026)