Browsing by All Authors "Cojazzi, G. G. M."

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    Material type and safeguardability considerations for innovative sodium fast reactors fuel including different minor actinides compositions
    (Institute of Nuclear Materials Management (INMM ), 2012-07) Renda, G.; Alim, Fatih; Cojazzi, G. G. M.; Peerani, P.; Bölüm Yok
    According to the Generation IV International Forum Technology Roadmap, Sodium Fast Reactors (SFR) could be a promising technology for minor actinides management. In view of a much higher radiological barrier, the addition of minor actinides to fresh fuel assemblies would change the way in which fresh fuel can be stored and handled, impacting not only on routine operations but also on the activities carried out during international safeguards inspections. While it is generally considered that the presence of minor actinides in fresh fuel assemblies would decrease the attractiveness of this potential target for a proliferator willing to divert nuclear material - thus increasing the proliferation resistance of the entire facility -, it might have perverse repercussions on the overall safeguardability of the target. In particular, the presence of minor actinides might complicate the measurement activities performed by safeguards inspectors during physical inventory verifications (PIV). The level of impact depends on the actual composition of the available fuel and might affect the current safeguards approach. This paper will present some considerations on a) the fuel assemblies’ material composition and its attractiveness for a potential weaponisation phase, b) the potential increase of the PR of a system employing MA-bearing fresh fuel, and c) the safeguardability of MA-bearing fuel assemblies.
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    The collaborative project on the European sodium fast reactor and its proliferation resistance evaluation
    (ENC 2012, European Nuclear Conference, 2012) Alim, Fatih; Cojazzi, G. G. M.; Renda, G.; Bölüm Yok
    The collaborative project on the sodium fast reactor (CP-ESFR) is an international project where 25 European partners develop R&D solutions for a European Sodium Fast Reactor concept. The Project is funded by the 7th EU Framework Programme and covers topics such that the fuel, the fuel element and the fuel cycle, the safety concepts, the reactor architectures and components and the balance of plant. Within the sub-project 3, dedicated to safety, a task, addresses proliferation resistance issues. In the paper some of the core features and the so called working horses, for a loop and a pool Sodium fast reactor concept are presented, by highlighting those more relevant for the proliferation resistance aspects. Some of the activities carried out in the project for its proliferation resistance evaluation are then illustrated, in particular those related to material type considerations on the possible diversion targets.