What is a common method for assessing pipe cleanliness in maintenance procedures?

Pigging is a commonly used method for assessing pipe cleanliness during maintenance procedures. This technique involves the use of a "pig," which is a specially designed device that is pushed through the pipeline to remove debris, buildup, and blockages. As the pig travels through the pipe, it effectively scrapes and cleans the interior surfaces, allowing for a more thorough assessment of the pipe's condition.

Pigs can be designed for various purposes, including cleaning, inspection, and even product separation, making them versatile tools in pipeline maintenance. By employing pigging, maintenance crews can not only clean the pipes but also evaluate the level of cleanliness and identify any potential issues, such as corrosion or damage, that might require further attention.

This method is particularly effective in large pipeline systems where manual cleaning is impractical. It combines physical cleaning with the ability to gather inspection data, allowing for a comprehensive approach to maintaining pipeline integrity and performance.