RADIOACTIVE WASTE DISPOSAL METHOD AND HEAT-DISSIPATING CAPSULE FOR REALISING SAID METHOD Russian patent published in 2014 - IPC G21F9/28 

FIELD: physics.

SUBSTANCE: method involves immersing at least one heat-dissipating capsule into a well formed in geologic formations. A heat-conducting array saturated with radionuclides is placed inside the capsule with an airtight casing. The average density of the capsule with radioactive wastes is higher than the density of the rocks under the capsule. The melting point of the refractory material from which the airtight casing of the capsule is made is higher than that of the rocks under the capsule. The quantitative composition of the mixture of radionuclides inside the casing is selected based on the condition that, the power of volumetric heat release of the radioactive wastes should be higher than the heat power needed to melt the rocks under the capsule. Content of the highly active isotope in the mixture of radionuclides filling the capsule is selected based on the condition: q_min≥1.2 W/cm³, where q_min is the minimum power density of volumetric heat release of the mixture of radionuclides 10 years after immersing the capsule.

EFFECT: enabling relatively fast disposal of the entire range of radioactive wastes, including long-lived radionuclides, irreversible dissolution of radionuclides.

20 cl, 1 dwg