Hydrant systems at airports form an important part of the overall aviation fuel system, with each segment dependent on proper design, construction, and operation to guarantee asset integrity and fuel quality, ensuring the delivery of clean, dry, and onspecification fuel to aircraft.
In the planning of a new international airport hub, the necessity of a fuel hydrant system is unequivocal to meet peak fuel demands during peak periods and to ensure sufficient service time overall. Simultaneous refueling of numerous aircraft at peak periods may occur. Airports and airlines want to reduce aircraft fueling time, while fuel suppliers seek to prevent congestion at refueling stations, and airports strive to decrease traffic on the apron and ramps.
The Hydrant System is not only significant at international airport hubs; other considerations beyond the airport’s size influence the choice to implement a Hydrant System in airport fuelling operations. In larger airports, the turning point associated with uplift volume may be identified; however, in smaller airports, the turning point is
not directly linked to uplift volume.
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As per EI-1540 “A Hydrant system is defined as a buried fuel pipe with associated valves, delivery pumps, filters, drain and venting points, valve chambers, pit boxes and pit valves, instrumentations, control system, cathodic protection system and automated hydrant integrity testing system for the safe and efficient aircraft refuelling” While the definition covers the overall system, it should be noted that the fuel hydrant system planning and design undergoes several stages and could be segregated at certain specific boundaries, this is due several reasons, it could be for engineering, ownership, or budgetary.
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