Pigging
Sign in to savethumb|A cleaning pig for a oil pipeline. The blue plastic disks seal against the inside of the pipe to propel the device and to remove loose sedimentation or scale buildup. The black rectangles at the top and the circular disks in the center are magnets to attract and remove any loose metal objects in the pipe. thumb|An Ultrasonic testing|ultrasonic leak-detection pig. thumb|A cleaning pig for a oil pipeline. The wire brush encircles the shaft and scours the interior of the pipeline. thumb|A scraper pig shown at the Trans-Alaska Pipeline System Visitors Center
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16 sectionsContents
- Applications
- Etymology
- In production environments
- Product and time saving
- Environmental benefits
- Safety considerations
- Pigging operations
- Mechanical interlocks
- Types of pigs
- Gauging, separation and cleaning pigs
- Intelligent pig
- Location verification
- In popular culture
- See also
- References
- External links
thumb|A cleaning pig for a oil pipeline. The blue plastic disks seal against the inside of the pipe to propel the device and to remove loose sedimentation or scale buildup. The black rectangles at the top and the circular disks in the center are magnets to attract and remove any loose metal objects in the pipe. thumb|An Ultrasonic testing|ultrasonic leak-detection pig. thumb|A cleaning pig for a oil pipeline. The wire brush encircles the shaft and scours the interior of the pipeline. thumb|A scraper pig shown at the Trans-Alaska Pipeline System Visitors Center
In pipeline transportation, pigging is the practice of using pipeline inspection gauges or gadgets, devices generally referred to as pigs or scrapers, to perform various maintenance operations. This is done without stopping the flow of the product in the pipeline.