Aviation | ASTM D5006 | Determination of Fuel System Icing Inhibitors in Aviation Fuels

Fuel system icing inhibitors in aviation fuels prevent the formation of ice in fuels in order to ensure a safe flight in military and civil flights. According to ASTM D 5006-03 the concentration of fuel system icing inhibitors can be determined with high accuracy.

Jet fuel may contain a small amount of dissolved water. The jet fuels capacity to hold water diminishes with reduction in temperature. This process takes place every time an aircraft gains altitude, as the outside temperature at cruising altitude is around -50 °C. Under these circumstances water may separate and cause serious problems when freezing in fuel lines or filters, therefore blocking the flow of fuel and shutting down the engine. To prevent the formation of ice in fuel lines, a fuel system icing inhibitor (FSII) is added to jet fuel.

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