Photograph as originally submitted to this page in the Historical Marker Database www.HMdb.org. Click on photo to resize in browser. Scroll down to see metadata.

Photographer: Cosmos Mariner
Taken: June 28, 2012
Caption: Cleaning & Flow Pig
Additional Description: Devices call “pigs” improve the flow of oil through the Trans Alaska pipeline and monitor its condition. Pigs are launched and retrieved at pump stations and travel through the pipeline with the moving oil. The orange polyurethane sample in the pipe segment is a cleaning and flow improvement pig. Other more sophisticated pigs use magnetic fields and ultrasonic signals to detect small changes in the wall thickness and shape. Pigs are among the most important tools available for protecting the pipeline and detecting potential problems.
Submitted: August 30, 2012, by Cosmos Mariner of Cape Canaveral, Florida.
Database Locator Identification Number: p217786
File Size: 2.157 Megabytes

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