Siemens Aktiengesellschaft

Areva Np Gmbh

Werner Schweighofer

Rainer Gassen

Luis Sempere Belda

Bertram Zeiler

Karl-Heinz Neeb

Hans-Jorg Weisse

Christian M Schwabedissen

Brigitte Siewert-Posielek

Karl Habeck

Klaus Seifert

A process is provided for chemically decontaminating the surface of a metallic component. In a first treatment step, an oxide layer formed on the component by corrosion of the material of the component is detached from the surface of the component with a first aqueous treatment solution containing an organic decontamination acid. In a subsequent second treatment step, the surface which is at least partially freed of the oxide layer is treated with an aqueous solution containing an active component for removing particles which adhere to the surface. The active component is formed of at least one anionic surfactant from the group including sulphonic acids, phosphonic acids, carboxylic acids and salts of those acids.

Process for chemically decontaminating radioactively contaminated surfaces of a nuclear plant cooling system using an organic acid followed by an anionic surfactant

A method for varying the capacity for a specific chemical element of an ion exchanger used for cleaning a liquid from a loop includes varying the chemical status of the element in the liquid to be cleaned immediately upstream of the ion exchanger by adding given substances. The given substances added are removed immediately downstream of the ion exchanger. The chemical element may be antimony, the loop may be the primary loop of a pressurized water reactor plant and the liquid may be primary coolant.

Method for varying the capacity of an ion exchanger for a specific

In preparing test specimens for analysis, especially by X-ray fluorescence, the materials to be tested are comminuted and then dissolved in molten phosphates that are molten at elevated temperatures (several hundred degrees Centigrade) but solid at room temperature, and are subsequently cast into the required specimen form.

Method for preparing test specimens for analysis

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Erlangen, Germany

Werner Schweighofer