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Poster De Conférence Année : 2017

Implementation of a new gamma spectrometry device on the VERDON CET loop to measure iodine release kinetics

Résumé

The VERDON laboratory located in the LECA-STAR facility is devoted to the monitoring of fission products release andtransportation during severe accidents. In the recent context of the Fukushima events, a new key issue has been identified the impact ofcontrol rod degradation on the release of volatile fission products (FP). A higher than expected fraction of gaseous iodine might havebeen released during the accident due to the reaction of boron with CsI. A test was performed on high burn-up UO2 fuel to address thisnew issue and consolidate the database on the source term assessment. For this purpose a new gamma spectrometry device wasimplemented directly in the VERDON hot cell to record the iodine deposit kinetics on a dedicated filter. It completes the on-line gammastations of the VERDON CET loop focused on the fuel sample, the first hot leg of the CET, the aerosol FP filter and gaseous FP release.
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Dates et versions

hal-02417798 , version 1 (18-12-2019)

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  • HAL Id : hal-02417798 , version 1

Citer

S. Bernard, M. Ledieu, B. Gleizes, Yves Pontillon, G. Ducros, et al.. Implementation of a new gamma spectrometry device on the VERDON CET loop to measure iodine release kinetics. International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA - 2017 - LIEGE), Jun 2017, Liege, Belgium. International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA - 2017 - LIEGE), 2017. ⟨hal-02417798⟩

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