A purchaser and transporter of crude oil products contacted ACES with a challenge relating to one of their LACT stations. A LACT unit (Lease Account Custody Transfer) is the critical control system in an oil pumping station, which measures and regulates…
THE MYSTERY An aircraft manufacturer was experiencing intermittent problems with one of their fuel tank valves: It would work fine for a while and then randomly give a fail-to-close alarm. THE CLUES The first day the Control Systems Inspector (CSI) visited the plant…
THE MYSTERY A local aircraft manufacturer has a fuel farm of ten large tanks, each storing 30,000 gallons of Jet A fuel. A valve on each tank opens to allow fuel to flow in and out to tank trucks or other tanks. When one of these valves failed, the customer called in...
