Static dissipating additive (SDA) is added to JP-8 to

Static dissipating additive (SDA) is incorporated into JP-8 fuel to enhance the fuel's conductivity. This addition is critical because it helps in reducing the buildup of static electricity that can occur during the transfer and handling of the fuel. When fuel is pumped or agitated, static electricity can accumulate and, if not controlled, may lead to sparks that could ignite the fuel vapor.

By increasing the conductivity of the fuel, SDA allows for better dissipation of static charges, minimizing the risk of static discharge incidents. This improved conductivity ensures that any static electricity generated during the handling of the fuel is safely dissipated to the ground, thus bolstering safety measures during fueling operations. Overall, the main purpose of adding SDA is to mitigate the hazards of static electricity in aviation fuels like JP-8.