FIELD: chemistry.
SUBSTANCE: invention relates to methods of chemical decontamination of radioactively contaminated metals. Method of decontaminating surface contaminated articles made from metal alloys or fragments thereof involves applying on decontaminating surface powder reagent, in which at least 80 % of particles are less than 1 µm in size, containing potassium, sodium and sulphur; heating the surface; its cooling and cleaning of formed scale. Powder reagent is applied on the dry surface. Layer of synthetic varnish with ignition temperature of 210-250 °C is applied on the surface treated with the reagent.
EFFECT: invention increases the efficiency of decontamination of surface contaminated articles made from metal alloys or fragments thereof due to boosted contact of reagent with radionuclides, which are located in open pores, cracks and other defects on the surface, at simultaneous increase of its economical efficiency due to reduced consumption of reagent powder.
4 cl, 3 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DECONTAMINATION OF SURFACE CONTAMINATED ARTICLES FROM METAL ALLOYS OR THEIR FRAGMENTS | 2019 |
|
RU2724627C1 |
| METHOD OF DECONTAMINATING SURFACE-CONTAMINATED ARTICLES MADE FROM METAL ALLOYS OR FRAGMENTS THEREOF | 2011 |
|
RU2474899C1 |
| METHOD FOR DECONTAMINATING IRON-CARBON ALLOYS | 1995 |
|
RU2097852C1 |
| DEACTIVATING METHOD FOR IRON-CARBON ALLOY | 1995 |
|
RU2077079C1 |
| METHOD OF DEACTIVATING IRON-CARBON ALLOYS | 1995 |
|
RU2121722C1 |
| METHOD OF EQUIPMENT DECONTAMINATION FROM SURFACE RADIOACTIVE CONTAMINATION | 2006 |
|
RU2328785C1 |
| METHOD OF PROCESSING METALS CONTAINING PRINCIPLINED SURFACE RADIOACTIVE POLLUTIONS | 2015 |
|
RU2635202C2 |
| METAL SURFACES DECONTAMINATION METHOD | 2019 |
|
RU2724106C1 |
| METHOD FOR DECONTAMINATION OF METALS AND ALLOYS WITH SURFACE RADIOACTIVE CONTAMINATION | 1994 |
|
RU2061267C1 |
| METHOD OF DEACTIVATION OF EQUIPMENT FROM SURFACE RADIOACTIVE CONTAMINATION | 2006 |
|
RU2329555C2 |
