PES Refinery Explosion: Deadly Catastrophe Adverted By Quick Action
The US Chemical Safety Board (CSB) released a factual update on the June 21 explosion and fire at the Philadelphia Energy Solutions (PES) Refinery in Philadelphia. The update notes that a pipe elbow, which had corroded to about half the thickness of a credit card, appears to have ruptured in the refinery’s alkylation unit, releasing process fluid that included over 5,000 pounds of hydrofluoric acid, or HF. The leaking process fluid formed a large ground-hugging vapor cloud which ignited, causing a massive fire and explosions. Five workers were injured. Thanks to the heroic actions of four employees, Barbara McHugh, Sal Diberardo, Dave Farrell and Sean McElhinney - members of the United Steelworkers (USW) - thisa massive explosion on June 21st at the Philadelphia Energy Solutions (PES) Refiner in Philadelphia did not turn into a deadly catastrophe. McHugh a control room activated the rapid Acid Deinventory system which dumped HF into a drum away from the fire while Farell, McElhinney and Diberado shut down valves to stop fuel to the fire under firey conditions. All four workers were honored at a ceremony on September 8 by the Philadelphia Firefighters. "McHugh's actions prevented a much larger and potentially catastrophic release of HF. [...]