EnergyAnon here…
That refinery is one of the oldest in the country and it's parent company just emerged from Bankruptcy. Likely a huge insurance payout coming.
https://www.inquirer.com/philly/business/energy/pes-philadelphia-refiner-names-new-leadership-after-emerging-bankruptcy-20180814.html
Interesting to note that in that massive blast their were no reports of injuries… That almost never happens in refinery fires or explosions.