The method of localization of surface radioactive contamination
(57) Abstract:The invention relates to nuclear power and reprocessing industry, in particular to methods of localization of surface radioactive contamination during the construction and decommissioning of nuclear facilities in conditions where effective decontamination is difficult or impossible. Effect: simplified drawing of confining coatings in areas with high background radiation to eliminate manual labor and improve safety at work. The inventive method comprises applying to the soiled surface of the film-forming substance. This substance is lead in the foamed state attained by the introduction of film-forming solution of surface-active substances in concentrations that provide the necessary foaming. table 2. The invention relates to nuclear power and reprocessing industry, in particular to methods of localization of surface radioactive contamination during the construction and decommissioning of nuclear facilities and dismantling of the equipment in conditions where effective decontamination is difficult or impossible.One of the efficient methods of disposal facilities in place is filling the internal cavities of special concrete or other cementitious compositions. This option may be only for underground facilities and other heavily contaminated and cannot be decontaminated objects. Filling voids binder composition inevitably requires measures to reduce particulate emissions at the works. Radical means of preventing aerosol emissions is an effective decontamination, however, when the latter is difficult or impossible, it is necessary to resort to the localization of the surface contamination.For localization of radioactive contamination on solid surfaces used numerous compositions based on organic and inorganic film-forming substances. Known compositions for the isolation of surface radioactive sagaidisanai resin. The compositions are applied on the protected surface by brush or conventional spray .Similar features analog and the proposed method: the localization of the surface contamination carried out by applying to the surface of the protective film.For reasons that impede the achievement of specified following technical result is that for application to exposed surfaces with a film-forming composition must be present in the premises of the staff that in case of high radiation fields or dangerous, or generally unacceptable.The closest way to the same destination to the claimed invention on the totality of symptoms is the way the decontamination and containment of radioactive contamination by coating on the surface of the water-soluble polymers of the type of polyvinyl alcohol or latex , adopted for the prototype.The reasons that impede the achievement of specified following technical result when using the known method, the same as the previous analogue, namely the use of manual labor when applying confining surfaces, the need for the presence of personnel in the contaminated areas, the complexity of the coating in hard to reach places.
1. Poluektova, B., Kovalchuk O. C., Kruglov, A. K. Removal of a nuclear power plant. / Nuclear technology abroad, 1990, 8, S. 3-8.2. Simon A. D., Pikalov C. K. Decontamination. M: publishing house, 1994, S. 197-199.3. Anpilogov N. I., Simanovsky Y. M., A. Trapeznikov, A. Decontamination in the nuclear power industry. M: Energoizdat, 1982, S. 145-146. The method of localization of surface radioactive contamination, including drawing on the contaminated surface of the film-forming substance, wherein the film-forming substance result in a foamed state attained by the introduction of film-forming solution of surface-active substances is
FIELD: nuclear power engineering.
SUBSTANCE: compaction involves cutting members into fragments using electroerosive destruction of member wall by pulse spark-arch discharges emerging between member and electrode. In addition, high-temperature treatment in oxidizing medium, in particular vapor formed, is carried out. Cutting and heat treatment are accomplished in water.
EFFECT: simplified procedure and increased safety.