Surface treatment gel, especially for decontaminating ventilation shafts in nuclear plants, comprises a colloidal solution containing an inorganic viscosifier and a treatment agent

摘要

Surface treatment gel comprises a colloidal solution containing 5-25 wt.% of an inorganic viscosifier, 0.1-7 mole/l of a treatment agent and optionally 0.05-1 mole/l of an oxidizing agent having a redox potential above 1.4 V in strong acids, or the reduced form of such an oxidizing agent. An Independent claim is also included for a method for treating a surface, comprising applying a treatment gel as above to the surface, maintaining the gel at a temperature and relative humidity such that the gel dried and has time to treat the surface before forming a dry solid residue, and removing the residue from the surface.