PG&E’s underground pipeline safety project

The devastating pipeline explosion in San Bruno back in 2010 has led Pacific Gas & Electric Co. to a US$3 billion upgrade of their 70,000-mile natural gas transmission system in addition to conducting a comprehensive review to identify areas of potential safety concerns aboveground (such as commercial buildings, trees, houses etc.) that could end up sitting on top of its high-pressure gas line network. Their community pipeline safety initiative programme includes investing in the installment of 127,000 excess flow (automatic shut-off) valves to their gas lines to immediately detect a change in pressure and restrict excess gas flow if a line is broken or damaged, which will be an added layer of protection for customers and communities alike. In the event of an explosion or other pipe failure, the valves will also improve the pipeline safety as well as reduce methane emissions from oil and gas infrastructure and address changes in temperature. 10 out of the 12 recommendations to the company from the National Transportation Safety Board have been accomplished so far with the final two in process. Click here for the full article…


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