A recap of the Philadelphia refinery explosion (inquirer.com)

> In the middle of the chaos, an operator in the central control room, located in the shadow of the Passyunk Avenue Bridge far from Unit 433, took quick action and shuttled the hydrofluoric acid to a separate container, according to O’Callaghan, the steelworkers president. The industry term for that is “rapid deinventory.” “The equipment that was installed to save the acid worked. She did a great job,” O’Callaghan said of the operator, who declined to be interviewed. “She saw it come up and she took action and followed her training.” “A refinery worker on the scene who wasn’t authorized to publicly discuss the matter offered this assessment: “She’s a f-ing hero. Whatever she did up there,” he said. “When you’re ‘on the board’ as we call it, your alarm screen looks like a slot machine, all the alarms are going off.” He said she may have “saved the city, really."

Thank god this operator took swift action and moved that HF. She is a hero.