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One of the most pressing concerns is with regards to safety incidents that result from leakage. Most of the current pipeline system was constructed decades ago in the 1930’s and 1940’s, and as of today, a majority of these pipes can’t be inspected properly using a “PIG” or pipeline inspection gauge. Air pollutants, including methane, nitrogen oxides, sulfur dioxide and other hazardous air toxics can escape into the air unintentionally due corrosion of pipes and improper installation or maintenance of pipes. Work is being done within the industry to make the “pigs” more lightweight and accurate in detecting corrosion, cracks, and defects within pipelines.

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