Konferans 2010-2019 yılları

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Browsing Konferans 2010-2019 yılları by All Authors "Alim, Fatih"

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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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    Proliferation resistance considerations within the collaborative project for a European sodium fast reactor
    (Publications Office of the European Union, 2013) Alim, Fatih; Cojazzi, Giacomo G. M.; Renda, Guido; Bölüm Yok
    The collaborative project for a European Sodium Fast Reactor (CP-ESFR) is an international project where 25 European partners developed R&D solutions and concepts for a European sodium fast reactor. The project was funded by the 7th EU Framework Programme and covered 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 sub-project 3, dedicated to safety, a task addressed proliferation resistance considerations. The Generation IV International Forum (GIF) Proliferation Resistance & Physical Protection (PR&PP) Evaluation Methodology has been selected as the general framework for this work, complemented by punctual aspects of IAEA-INPRO Proliferation Resistance (PR) assessment methodology and other literature studies in particular for material type characterization. In the paper the main core characteristics and the so called working horses, for a loop and a pool Sodium fast reactor concept are firstly presented, by highlighting those features more relevant for the proliferation resistance. Selected activities carried out in the project for its proliferation resistance considerations are then illustrated.