Kernforschungszentrum Karlsruhe Gmbh

Siegmar Kunze

Gunter Losch

Rainer Koster

Theodor Dippel

Dietrich Laske

Walter Hubner

Gerhard Eden

The present invention relates to a method for decontaminating radioactively contaminated surfaces of metallic materials with the use of nitric acid and hydrofluoric acid. The surfaces to be decontaminated are subjected to a vapor mixture of water vapor, hydrogen fluoride and nitric acid vapor.

Method for decontaminating radioactively contaminated surfaces of

Process for solidifying radioactive waste wherein the waste is in solid or aqueous, flowable or liquid form, by mixing the waste with a binder to form a mixture and then leaving the mixture to harden. A mixture of the waste, the binder and an additive which is natural volcanic rock detritus, is formed. The detritus has a total content of CaO+MgO up to a maximum of 6.5 percent by weight and less than 50 percent by weight of residue insoluble in mineral acid. The detritus additive is mixed in an amount between 1 percent by weight and 60 percent by weight of the binder employed.

Method for improving the radionuclide retention properties of solidified

A method for forming a hardened product containing a radioactive ion exchanger resin in a condition for permanent, noncontaminating storage, by the steps of:

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Gernsbach, Germany

Siegmar Kunze