METHOD OF SIMULATOR PREPARATION FOR SPENT NUCLEAR FUEL ACID DISSOLVING PRODUCTS CLARIFICATION PROCESSES DEVELOPMENT Russian patent published in 2017 - IPC G21F9/00 

FIELD: fuel.

SUBSTANCE: invention relates to radiochemical technology and can be used for testing of equipment in spent nuclear fuel (SNF) processing technology. Method of simulator preparation for spent nuclear fuel acid dissolving products clarification processes development involves obtaining finely dispersed model suspension, containing solid-phase composition chemically inert in nitric acid media. Composition contains more than one component, representing fine dispersed hydrated oxide and metallide forms, which are introduced in form of separately prepared powders by dispersion in fluid to produce solid phase particles concentration of 10–35,000 mg/l, with solid phase particles density of 4.4–6.5 g/cm³, with solid phase particle size of 50–2,500 nm, with suspensions density of 1.3–2.4 g/cm³.

EFFECT: invention enables to simulate SNF acid dissolving product with account of its production method, type of SNF, burnup fraction, duration of conditioning before processing, operations preceding dissolution.

15 cl, 5 dwb, 1 tbl, 1 ex