Relating to the cathodic protection of structures
US4078510A · kind A · utility
13Cited by
1References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 7, 1977 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Jan 7, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/58
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of surveying a cathodically protected metallic structure at least partly immersed in a liquid, such as an undersea pipeline which has sacrificial anodes attached at regular intervals along its length. The anodes provide a known electrolytic potential relative to the surrounding water. The potential differences in the water between a point adjacent an anode, and test points adjacent the pipeline are measured, and the varying level of protection along the pipe is determined from the variations between the measured potential differences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.