Apparatus for and method of removing radioactive bottoms from an evaporator
US4273670A · kind A · utility
2Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1979 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Mar 16, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S159/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Apparatus and methods are disclosed for removing concentrated radioactive aqueous waste from an evaporator and delivering the waste to a storage tank. The evaporator drain conduits are maintained full of feed liquor when concentrated waste is not being removed from the evaporator and feed liquor is used to rinse the conduits after the concentrated waste removal through the conduits is completed. The liquid fed through the conduits is carefully controlled by a sequencer or timer. A fast acting evaporator drain valve is used which can be rinsed by feed liquor to avoid plugging and deposition of radioactive solids in the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.