| http://www.w3.org/ns/prov#value | - Smart pigs" perform other pipeline maintenance jobs, such as the detection of abnormalities in metal, but the inline inspection tools are at risk of clogging by paraffin.Lower temperatures also means water mixed in with crude oil is susceptible to freezing in Alaska's extreme cold if the pipeline is shut down, making re-starts of the pipeline after long shutdown more risky.There is a risk of wat
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