Method of cleaning and decontaminating equipment in nuclear power plants
Author: A.K. Andrianov, B.A. Gusev, A.A. Efimov, V.V. Krivobokov
Reference: Patent, 27.07.2009, Sosnovyi Bor patent holder: State enterprise scientific-research centre of technology named after A.P. Aleksandrov
Keywords: lead coolants, decontamination
Abstract: The current invention relates to nuclear power engineering and can be used for treatment and decontamination of equipment, operating in lead coolants, and for refinement (neutralization) of liquid radioactive waste generated during its purification, concentration and solidification. After decontamination of equipment with solutions of acetic acid, containing oxygen, stochiometric quantity of orthophosphoric acid or sulfuric acid or excess of phosphoric acid is introduced into the solution of liquid waste; then, generated heterogeneous product is treated with heat treatment at a temperature of 100~120℃; acetic acid condensate is returned to the process of decontamination cycle, and the treatment salt concentrates, produced by heat treatment, is treated with traditional binders and phosphate curing agents.
URL: http://www.findpatent.ru/patent/239/2397558.html
コメント