Gel decontaminating reduction gear and its use for the decontamination of the surface, in particular from nuclear installations.

摘要

The invention relates to a gel decontaminating reduction gear and its use for the decontamination of surfaces. & br / this gel is constituted by a colloidal solution comprising: & br / a) 20 to 30% by weight of a gelling agent such as alumina, & br / b) 0,1 to 14mol / l of a base such as naoh, and & br / c) 0,1 to 4,5 mol / l of a reducing agent having an oxidation-reduction potential e0 less than - 600mv / enh in a strong base (ph & = 13), for example, nabh4, na2 s, na2 s2 o4 or hydrazine. & br / this reducing gel can be used for the decontamination of metal surfaces covered with oxide layers adhering.