Companies were alerted at 0230 for a liquid oxygen tank leaking at the Airport Business Complex 10 Industrial Hgwy in Tinicum. 17-9BBuschmeir assumed command with 17-13Byrne as Operations 25-9Bernauer safety officer 08-9BSignoraM. Hazmat officer 08-13RossneyR.I.T. Officer and 08-13AHuber as accountability. Crews from 25 17 provided Recon while 08 crews stood by as the R.I.T. A Technician from Scullys Air Supply was called in as it was their tank. Crews were in service for two and a half hours.