Pipeline pigging is a concept in pipeline maintenance that involves the use of devices known as pigs, which clean pipelines and are capable of checking pipeline conditions. This process is done without necessarily interfering with the flow of product in pipeline.
Purpose of Pipeline Pigging:
- Cleaning: to remove debris, scale, and contaminants from the pipeline walls, preventing buildup that could impede flow and lead to corrosion.
- Inspection: to assess the internal condition of the pipeline, identifying defects, irregularities, and potential issues to proactively address maintenance needs.
- Efficiency Optimization: to enhance the overall efficiency of the pipeline by reducing friction, optimizing flow, and minimizing the energy required for material transportation.
How Does Pipeline Pigging Work?
Pipeline pigging involves using “pigs” to clean, inspect, or perform pipeline maintenance tasks. The typical pigging system consists of a pig, a launcher, and a receiver, collectively known as the “pig trap.” The pig is a cylindrical device that travels the length of a pipeline by being pulled by a string or using the force of a fluid flowing through the line.
The pig launcher releases the pig from one end of the pipeline (launcher station), and the receiver retrieves it at the other eno (receiver station). Pipeline pigging is a potentially hazardous procedure that should only be carried out by competent professionals.
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