Environmental radioactivity measurement system of administration and an analysis method of the radioactivity
US8190398B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2008 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | May 27, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T7/00
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
At a worksite of a client, progeny nuclides of radon and thoron are collected into a filter, then making the gross measurement on α-ray amount within an hour from the collection. Next, the filter is sent to an analysis center with information added thereto, such as collection-condition information, gross-measurement information, and sampling-worksite information. At the analysis center, the gross measurement on the filter sent thereto is made again. Also, the radioactive-nuclide analysis is made to perform evaluation of the radioactivity intensity. Moreover, radon amount and thoron amount at the measurement-specimen sampling points-in-time at the worksite are calculated, then reporting the analysis result of the radon and thoron amounts to the client.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.