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. https://whyy.org/articles/chemical-safety-board-says-pes-refinery-explosion-did-not-have-to-happen/
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CHEMICAL SAFETY BOARD SAYS PES REFINERY EXPLOSION ‘DID NOT HAVE TO HAPPEN’
An outdated piece of pipe that had corroded so much its sides were the width of half a credit card led to the catastrophic explosion and fire at the Philadelphia Energy Solutions refinery in June, according to a new report out Wednesday by the Chemical Safety and Hazard Investigation Board.  The incident released a dangerous chemical, hydrofluoric acid, although no known injuries related to that release occurred.  “We are all very fortunate that there were no fatalities or serious injuries as a result of this catastrophic incident,” said the Chemical Safety Board’s interim executive, Kristen Kulinowski. READ MORE