Induced nuclear reactions: processes – systems – and elements – Fuel component structure
Reexamination Certificate
2005-07-19
2010-06-15
Palabrica, Rick (Department: 3663)
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
C376S457000, C148S672000, C148S421000, C420S422000
Reexamination Certificate
active
07738620
ABSTRACT:
A method for production of a fuel cladding tube for a nuclear reactor, characterized by the preparation of an ingot of an alloy of zirconium with the following composition by weight %: 0.8%≦Nb≦2.8%, traces≦Sn≦0.65%, 0.015%≦Fe≦0.40%, C≦100 ppm, 600 ppm≦O≦2300 ppm, 5 ppm≦S≦100 ppm, Cr+V≦0.25%, Hf≦75 ppm and F≦1 ppm the remainder being zirconium and impurities arising from production. The ingot is then subjected to forging, a hardening and thermomoechanical treatments comprising cold laminations separated by intermediate annealing, all intermediate annealings being carried out at a temperature below the α→α+β transition temperature of the alloy, finishing with a recrystallization annealing and resulting in the production of a tube, whereupon an optional external cleaning of the tube is carried out and a mechanical polishing of the external surface of the tube is carried out to give a roughness Ra less than or equal to 0.5 μm. The invention further relates to a fuel cladding tube obtained thereby.
REFERENCES:
patent: 4649023 (1987-03-01), Sabol et al.
patent: 5483563 (1996-01-01), Herb
patent: 5912935 (1999-06-01), Isobe et al.
patent: 6261516 (2001-07-01), Jeong et al.
patent: 6524169 (2003-02-01), Anderson et al.
patent: 08253828 (1996-10-01), None
patent: WO 97/05628 (1997-02-01), None
patent: WO 00/36170 (2000-06-01), None
patent: WO 01/24193 (2001-04-01), None
patent: WO 01/24194 (2001-04-01), None
patent: WO 01/61062 (2001-08-01), None
PCT International Search Report PCT/FR2005/001844, mailed Nov. 28, 2005.
Isobe et al., “Development of Highly Corrosion Resistant Zirconium-Base Alloys”, Zirconium in the Nuclear Industry: Ninth Symposium, No. 1132, 1991, pp. 346-367.
Schemel et al., “Influence of the Manufacturing Process on the Corrosion Resistance of Zircaloy-4 Cladding”, Zirconium in the Nuclear Industry: Ninth Symposium, No. 1023, 1989, pp. 141-152.
Ogata et al., “A Systematic Survey of the Factors Affecting Zircaloy Nodular Corrosion”, Zirconium in the Nuclear Industry: Ninth Symposium, No. 1023, 1989, pp. 291-314.
Aubin Jean-Luc
Barberis Pierre
Mardon Jean-Paul
Rebeyrolle Veronique
Areva NP
Davidson Davidson & Kappel LLC
Palabrica Rick
LandOfFree
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