Method for decontamination of nuclear plant components

Procede de decontamination de composants de centrales nucleaires


A process for removing undesirable material such as a radioactive contaminant from an underlying material. A solution containing fluoroboric acid and a material which affects the fluoroboric acid solution oxidation potential (Eh) is contacted with the contaminant material to cause its removal. The contaminant material is removed from the fluoroboric acid solution by contacting the fluoroboric acid solution which has been contacted with the contaminant material with a cation exchange resin.
La présente invention concerne un procédé d'élimination de matériaux indésirables tels qu'un contaminant radioactif d'un matériau sous-jacent. Le procédé consiste à mettre en contact une solution contenant de l'acide fluoroborique et un matériau modifiant le potentiel d'oxydation (Eh) de la solution d'acide fluoroborique avec le matériau contaminant de façon à en provoquer l'élimination. Le procédé consiste ensuite à éliminer de la solution d'acide fluoroborique le matériau contaminant en mettant en contact avec une résine d'échange cationique la solution d'acide fluoroborique qui a été au contact du matériau contaminant.




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NO-Patent Citations (1)

    See also references of EP 0859671A4

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    WO-2004071681-A1August 26, 2004Cleansolve Holding Aps.A method of monitoring and controlling a cleaning process and a method of checking cleanliness