Invention Grant
- Patent Title: Production method for a nuclear fuel assembly support grid and a nuclear fuel assembly support grid produced by the same
- Patent Title (中): 核燃料组件支撑网格和由其生产的核燃料组件支撑网格的生产方法
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Application No.: US10287505Application Date: 2002-11-05
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Publication No.: US06909766B2Publication Date: 2005-06-21
- Inventor: Toshiya Kido , Kimio Nakayama , Yasunao Yamaguchi
- Applicant: Toshiya Kido , Kimio Nakayama , Yasunao Yamaguchi
- Applicant Address: JP Naka-gun JP Tokyo JP Naka-gun
- Assignee: Mitsubishi Nuclear Fuel Co., Ltd.,Mitsubishi Heavy Industries, Ltd.,Nuclear Development Corporation
- Current Assignee: Mitsubishi Nuclear Fuel Co., Ltd.,Mitsubishi Heavy Industries, Ltd.,Nuclear Development Corporation
- Current Assignee Address: JP Naka-gun JP Tokyo JP Naka-gun
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- Priority: JP2001-343735 20011108
- Main IPC: G21C3/34
- IPC: G21C3/34 ; C21D1/26 ; C22F1/00 ; C22F1/18 ; G21C3/32 ; G21C21/00
Abstract:
One object of the present invention is to provide a production method for a nuclear fuel assembly support grid that improves the corrosion resistance of welded parts without impairing the characteristics of the support grid so as to be able adequately withstand highly efficient operation. In order to achieve the object, the present invention provide a production method for a nuclear fuel assembly support grid comprising the steps of: assembling a plurality of straps in a grid form; welding intersections of each strap; and carrying out annealing thereafter to precipitate an intermetallic compound on the welded parts.
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