Nuclear fuel reprocessing plant
US5190623A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1989 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Mar 29, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S422/903
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a nuclear fuel reprocessing plant for processing a used nuclear fuel by a nitric acid solution, the present invention provides a nuclear fuel reprocessing plant characterized by including electrolytic reduction means for reducing the valence of oxidizing metal ions consisting of the nuclear fuel and dissolved in the nitric acid solution while they are kept under the ionic state. In a processing method of a nuclear fuel reprocessing plant for processing a used nuclear fuel by a nitric acid solution, the present invention provides also a corrosion-proofing method of a nuclear fuel reprocessing plant characterized in that electrolytic reduction is carried out so that the valence of oxidizing metal ions consisting of the nuclear fuel and dissolved in the nitric acid solution is reduced while the metal ions are kept under the ionic state and NOx gas is also generated. The invention is directed to provide a nuclear fuel reprocessing plant and its corrosion-proofing method which prevents corrosion of equipment without allowing the precipitation of corrosive metal ions in a nitric acid solution as the metals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.