Westinghouse Electric Sweden Ab

John Bates

Lars Hallstadius

James T Dougherty

Mats Dahlbäck

Robert J Comstock

Magnus Limbäck

Steven J King

Magnus LIMBÄCK

Steven King

A method of manufacturing an optimized sheet metal () of a zirconium based alloy is described, which optimized sheet metal () defines a sheet plane (BA). The method comprises the steps of providing a sheet metal () of a zirconium based. alloy, subjecting the sheet metal () to at least a preparing cold rolling and a final cold rolling, wherein the preparing cold rolling and the final cold rolling are both performed in a common rolling direction, and heat treating the sheet metal () between the preparing cold rolling and the final cold rolling so that the zirconium based alloy is partially re-crystallized. A method of manufacturing a spacer grid using an optimized sheet metal () according to the invention is also described.

Spacer grid for positioning of fuel rods

A method for manufacturing a sheet metal for use in a boiling water nuclear reactor and such a sheet metal. The method includes providing a material of a zirconium alloy that includes zirconium, and whose main alloying materials include niobium. The material is annealed so that essentially all niobium containing secondary phase particles are transformed to &#x3b2;-niobium particles.

Fuel box in a boiling water nuclear reactor

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West Clearfield, UT, United States of America

John Bates