Process for dissolving an oxide layer

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United States of America Patent

PATENT NO 9502146
SERIAL NO

14200327

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Abstract

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The invention relates to a process for dissolving a chromium, iron, nickel, zinc and radionuclides containing oxide layer, in particular for breaking down oxide layers deposited on inner surfaces of systems and components of a nuclear power plant, by means of an aqueous decontamination solution containing methanesulfonic acid, which flows in a loop, wherein in regular intervals small amounts of permanganic acid are added, and following reaction of the permanganic acid a second loop is added on in bypass and the dissolved cations and anions are removed by ion-exchange resins from the decontamination solution.

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Patent Owner(s)

Patent OwnerAddress
NIS INGENIEURGESELLSCHAFT MBHD-63452 HANAU

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bertholdt, Horst-Otto Nuremberg, DE 15 95
Landner, Alexander Schaafheim, DE 1 3
Loeb, Andreas Niddatal, DE 8 7
Runge, Hartmut Alzenau, DE 11 74
Stanke, Dieter Schollkrippen, DE 2 4

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