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Cr-coated cladding development at Framatome

Abstract : Framatome is actively developing an evolutionary enhanced Accident Tolerant Fuel (E-ATF) design showing enhanced performance in both nominal and accidental conditions: Cr-coated M5 cladding combined with Cr$_2$O$_3$-doped UO$_2$ fuel. The Cr-coated M5 cladding consists of a thin, dense and extremely adherent chromium layer deposited on the external surface of the M5 cladding. The main advantage of this solution is that it significantly reduces the high temperature steam oxidation, and thus limits the heat and hydrogen production usually observed in the oxidation reaction of steam with zirconium. Furthermore, recent out-of-pile results have shown improved behavior of the Cr-coated cladding with respect to debris fretting, which suggests that this solution will enhance the reliability of fuel. Additionally, Framatome has developed a large scale Cr-coating deposition to demonstrate the feasibility of PVD deposition on full length tubes and to use this facility to produce the Cr-coated cladding tubes for Lead Fuel Rod (LFR) irradiations such as the one planned for insertion in 2019.
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https://hal-cea.archives-ouvertes.fr/cea-02328963
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Submitted on : Tuesday, February 25, 2020 - 11:53:32 AM
Last modification on : Tuesday, April 28, 2020 - 11:28:14 AM
Long-term archiving on: : Tuesday, May 26, 2020 - 12:22:53 PM

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  • HAL Id : cea-02328963, version 1

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J. Bischoff, C. Delafoy, N. Chaari, C. Vauglin, K. Buchanan, et al.. Cr-coated cladding development at Framatome. Topfuel 2018 - Light Water Reactor (LWR) Fuel Performance Meeting 2018, Sep 2018, Prague, Czech Republic. ⟨cea-02328963⟩

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