Pipeline anti-corrosion technology and quality control

The service life of pipelines is directly related to their anti-corrosion construction, so it is necessary to optimize the measures for pipeline anti-corrosion construction, while also controlling the construction quality and key points. In petroleum enterprises, strict construction, inspection, and monitoring should be carried out on the anti-corrosion quality of pipelines to prevent corrosion and damage. Experiments have shown that taking effective anti-corrosion measures for pipelines and quality control of key points can significantly reduce or eliminate the phenomenon of pipeline corrosion and its resulting losses, better enable pipelines to play their value, and ensure their social, ecological, and economic benefits.
Introduction to pipeline anti-corrosion measures
The common method for dealing with pipeline corrosion is to add cathodic protection to the pipeline anti-corrosion coating, which is currently considered the most effective corrosion protection method in the world.
Coating refers to an isolation layer that has a protective effect on the surface of a pipeline. It can separate the metal in the pipeline from air, soil, and water, effectively protecting the pipeline from their erosion. Coating serves as the line of defense for corrosion control, and cathodic protection is the fundamental measure for pipeline corrosion prevention. Because the material of the pipeline coating has good permeability, it makes the coating more breathable and permeable, and at the same time, the coating itself has vacant holes. Secondly, during the transportation, loading and unloading, and construction of pipelines, it is easy to cause damage and damage to the coating. After the pipeline is buried, the surrounding soil and human behavior may cause certain damage to the coating. Therefore, the coating cannot completely isolate the pipeline. If only the coating is used for isolation, it cannot completely prevent pipeline corrosion. Cathodic protection technology should also be applied to the pipeline, To apply anti-corrosion measures to the pipeline.
Cathodic polarization anti-corrosion measures refer to applying cathodic current to pipelines, which can provide electrons to the corroded environment and prevent metal corrosion. Coating protection is a line of defense, so cathodic protection is the second line of defense. The coating effectively maintains the current required for cathodic polarization in pipelines, so that cathodic protection can be applied to anti-corrosion measures for pipelines. In fact, cathodic protection and coating are interrelated, and cathodic protection is beneficial for solving defects in coatings. Cathodic protection plays a crucial role in pipeline corrosion prevention and is also beneficial for pipeline corrosion control.
Quality control of pipeline anti-corrosion
To ensure the smooth progress of anti-corrosion construction, it is necessary to strengthen quality monitoring of the construction process while ensuring the qualification of raw materials. Based on years of construction experience, the workers have summarized several key points of anti-corrosion construction as follows.
The quality control of the anti-corrosion process on the surface of the 01 pipeline is mainly completed in the workshop. The current anti-corrosion methods include cleaning the pipeline surface, using sandblasting for rust removal, spraying adhesive on the primer, and wrapping with polyethylene. These automated anti-corrosion methods are less affected by human factors, and the environment in the anti-corrosion workshop is relatively good. The key to quality monitoring in this way is to assign independent third-party management to supervise the anti-corrosion process, strengthen the factory's monitoring of raw materials, and ensure the quality of the project. According to the data, in the current actual production process, by improving the quality of the workshop