Electric Power Research Institute Incorporated

Siemens Aktiengesellschaft

Areva Np Gmbh

Peter Dewes

Friedrich Garzarolli

Dietrich Alter

J Lawrence Nelson

Roland Hahn

Erhard Ortlieb

Josef Steven

Hans-Peter Fuchs

Matthias Rudolph

Alfons Roppelt

Norbert Schmidt

Reiner Manzel

Günter Fischer

Werner Jahreiss

Florian Schebitz

Winfried Beck

Franz-Josef B&ouml;kers

A control rod for a pressurized-water nuclear reactor contains an absorber rod which is arranged in a casing tube. At least in a lower section, the absorber rod is provided with at least one recess which takes up at most a portion of the circumferential surface of this section. This reduces problems associated with an expansion in the volume of the absorber rod.

Control rod for a pressurized water nuclear reactor

A spacer of a fuel assembly having intersecting webs undergoes reduced longitudinal expansion as a result of corrosion during an operating period. The webs have intersection locations at which assembly gaps are provided. The assembly gaps have widths which correspond essentially, at most over a fraction of their total length, to the wall thickness of an intersecting web, but are wider in a remaining region. Since corrosion layers growing from an edge of an assembly gap toward the intersecting web cannot touch the web, no solid pressure, which could lead to longitudinal expansion, builds up.

Space for a fuel assembly of a nuclear power station

Manufacturing of materials and workpieces for components in nuclear

A method of producing austenite steel for use in the radiation zone of a nuclear reactor. The method comprising the steps of forming the austenite steel with about 17% by weight chromium, about 9 to 11.5% by weight nickel, about 0.04% by weight carbon, and iron impurities whose content of silicon is about 0.1% by weight and whose total content of sulfur and phosphorous is less than 0.03% by weight; and exposing the austenite steel to a temperature treatment at a temperature less than 1150 .degree. C. to produce a fine grain lattice with grain diameter features under approximately 20 .mu.m.

Manufacture of materials and workpieces for components in nuclear plant

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Erlangen, Germany

Peter Dewes