Here you'll find a good close up view of the Trans Alaska Pipeline and a remote-operated valve site, with Pump Station 4 in the background. At 151 points along the pipeline, pressure relief valves are used to relieve pressure and keep it below a designated level or stop the flow of oil if necessary. These valves are designed to close automatically. They are located at stream crossings, population areas and major uphill sections of the pipeline.
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- Coordinates: 68.349729, -149.333482