Jon Berg Jørgensen Skrevet 31. oktober 2009 Skrevet 31. oktober 2009 Hvorfor trenger vi ikke å jorde bilen før vi fyller fuel? Siter
Kristoffer Rivedal Skrevet 31. oktober 2009 Skrevet 31. oktober 2009 Tok et kjapt søk på nettet og fant dette svaret. kilde Ok, first of all, dutch people: the question was answered by Shell in Belgium. And his name was very frensh, so never mind the spelling! Basically what he writes, is that Avgas and JetA1 are far wors conductors then Petrol gas (automobile). Especially pumping with high speeds (he mentions 7000l/hrs) means a lot of friction of the refueling itself (static buildup along the lines no decharges thru the fuel)! Other then that, he states that aircraft in general produce so much more static electricity (high dry altitudes and fast airflows), that it becomes unsave to refuel without grounding first. Since cars don't have that high an air friction and, as he states, use fuels that conduct better, the risk is minimized to neglectable. My personal experience is that a 747 plane came in from a flight and one of the mechanics wanted to work on one of the engines right away. The "grounder" wasn't ready yet. When the mechanic stood near (!) the engine a spark went from the engine, through his body to the ground. Moral: it's not just the refueling. Planes in general get a lot more static and are even dangerous for people in general working on the plane. regards Teeloo Siter
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