In order to meet the requirements of public safety, environmental protection and industrial standards, the cathodic protection system should be maintained daily to ensure its normal operation.
In order to improve the protection effect of the cathodic protection system, it is necessary to check the cathodic protection system regularly after it starts operation, find out the problems in the system in time, and deal with them in time.
Cathodic protection potential measurement is carried out once a month, through potential test piles buried every kilometer along the pipeline, the protection potential of the pipeline is measured.
Operation management requirements The current potential of the potentiostat should be set to ensure that the pipeline protection potential reaches the standard: -0.85V to -1.15V(CSE).
Cathodic protection parameter measurement
When taking protective potential measurements, it is sometimes found that the measured potential is more negative at a distance away from the confluence than at the confluence point.
This is because, near the confluence point, there is a short-circuit grounding or a large leakage point of the anticorrosive layer, resulting in a positive potential when measured at the confluence point.
However, after a distance from the confluence point, the influence of the leakage point of grounding and anticorrosive layer on the potential is weakened. The measured potential is a little bit more negative.