At nuclear power plants operating all over the world, 63 nuclides of radioactive materials, including tritiated water, which is the cooling water after cooling the reactor, are recovered without being dumped into the ocean. How to dispose.

摘要

PROBLEM TO BE SOLVED: To recover and dispose of 63 nuclide radioactive substances including tritiated water, which is cooling water after cooling a nuclear reactor, without dumping it into the ocean. SOLUTION: Contaminated water of Fukushima No. 1 Nuclear Power Station is used as a flake ice maker shown in FIG. 4, and has an irregular shape with a thickness of 1 mm to 1.5 mm and a size of 1 cm to 3 cm. After forming the flake ice, the flake ice is made of a thick cotton cloth such as jean, a ton bag made of other fibers and woven fabrics, a container with an opening, or a lid. Put the ton bag in a non-existent container and put the ton bag in a vacuum tank to make the inside vacuum. Tritiated water that is the flake ice shape (H 3 O) is extinguished and vaporized by sublimation. The radioactive substances of 62 nuclides, which are solidified inside the ton bag, are taken out from the contaminated water in a dried state, collected, and disposed of. [Selection diagram] FIG. 6