Patent ID: 9395003
Filing Date: 2016-07-19
CPC Classification: F16K,G21F

Claim Text:
1. A process for reducing a radioactive material of an object containing a radioactive material to a safe level in a living environment, the process comprising: releasing pressure including carrying out a heating process on an aqueous liquid that includes water, water-soluble liquid, or a mixture of water and water-soluble liquid, and the object in a state where temperature is less than or equal to a critical temperature of the aqueous liquid and pressure is greater than or equal to a saturated vapor pressure of the aqueous liquid when the object is immersed in the aqueous liquid to such a degree that the object is covered or to a greater degree and then abruptly releasing the pressure; and after the releasing pressure, separating a mixture of the object and the aqueous liquid into liquid and solid, the object being at least one selected from the group consisting of an organism, a sewage sludge, a soil and an incineration ash.