Method and apparatus for monitoring radioactive particles carried by a flowing liquid
US3953737A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1974 |
| Grant date | Apr 27, 1976 |
| Priority date | — |
| Expiry date | Oct 10, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T7/04
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The radioactivity of flowing water carrying very low concentrations of radioactive nuclides, is continuously monitored by passing the flowing water through a filter means to form an increasing collection of the nuclides, which collection is continuously monitored by a radioactivity detector producing pulses at an increasing rate dependent on the radioactivity of the collection. The pulses are fed to a pulse counter having an alarm activated by a pulse counter of adjustable count limit, and this limit is adjusted upward as the collection increases with time and in proportion to the time duration of the filtering and collecting. Therefore, the alarm is not activated if the concentration of the nuclides in the flowing water remains within the predetermined value; but if this value is exceeded, the alarm is activated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.