INSTALLATION Waterjet DECONTAMINATION inner surface EQUIPMENT

摘要

The invention relates to the field of decontamination, particularly to technical means for removing prochnofiksirovannyh radioactive deposits from the internal surfaces of equipment and pipes and can be used in the decontamination of nuclear power plant equipment. Problem to be Solved utility model is to increase the efficiency of the decontamination of internal surfaces of equipment having greater extension, a complex configuration and dead-end zone. The essence of the proposed technical solutions lies in the fact that in the apparatus for water jet decontamination of internal surfaces of equipment comprising a source of deactivating fluid injection pump, self-propelled nozzle suggested head and tail parts of the self-propelled nozzle to provide annular conical nozzle at a ratio of areas of outlet cross-sections nozzle head and tail of nozzle - 1: 2-2.5, wherein the angle of the nozzle arrangement in the nozzle head portion 70 ÷ 72 °, and the nozzles in the rear - 14 5 ÷ 150 ° relative to the fluid flow vector in the nozzle. This technical solution allows to improve the efficiency and quality of the decontamination of internal surfaces of equipment of considerable length and diameter, and complex configuration blind zone.