- Extension & Upgrade of Hydrant Fueling System
Burns & McDonnell completed the design of a hydrant fueling system extension and modification at the U.S. Naval Air Station at Sigonella, Italy. The existing system was a pressurized Type III hydrant fueling system that served seven aboveground fuel pits for aircraft refueling.
The scope of the project consisted of the construction of two new 6,000-barrel aboveground tanks, a new pumping system, three new flush-mount apron hydrant pits, a new refueler truck fill stand and modification of existing filtration system piping and controls.
The project also included a remodeling of the existing control building and electrical building. The hydrant system maintains the Type III controls and is fully automatic with a peak design capacity of 2,400 gpm. The issue piping is stainless steel with carbon steel return piping. The system has the capability of pantograph flushing at each hydrant pit.
Four existing 50,000-gallon buried fuel storage tanks were refurbished as part of the project. The tanks were cleaned and inspected. After refurbishment, the tanks were incorporated into the new system as additional storage capacity.
The pump control and annunciation system consists of a dual, hot-backup, programmable logic controller (PLC) system. The system is typical of the Air Force Type III standard design and standards contained in DM-22 (now superseded by MIL-HNBK-1022). The control system also consists of a leak detection system. An automatic tank gauging (ATG) system was provided for each new and existing fuel storage tank.
A new cathodic protection system was added to and integrated with the existing system at the fuel tank farm. All underground storage tanks (USTs) and all underground fuel piping were protected using an impressed current system.
The facility includes such sustainable design features as upgraded high-efficiency pumps, oil/water separation system to filter discharge runoff, and spill containment and recovery systems.
The fire alarm system consisted of a multi-zoned, non-addressable system that monitors the POL building, the pump house and the jet fuel storage tanks. The drawings utilize metric units and will provide Italian translation of all text. An Italian engineering firm provided the translation and reviewed the drawings and specifications for conformity to Italian standards and laws.