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paulmillner
Joined: 09 May 2007
Posts: 21
Location: Berkeley, California
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 Posted: Sat May 30, 2009 6:27 pm Post subject: Bonding for Fueling |
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>> how does one get lineboys trained that the engine exhaust pipe is a
terrible place for ground wire
Remember, it's not at all important to GROUND an aircraft for fueling.
What *is* important is to BOND the aircraft to the fuel source, so that
static charges created by the dielectric fluid called gasoline moving
through the fueling equipment don't result in a spark at the nozzle.
And... what Bob said about the size of the currents involved.
Call it bonding, not grounding.
Paul
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Paul Millner, Berkeley CA [OAK] |
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JOHN TIPTON
Joined: 17 Sep 2006
Posts: 239
Location: Torquay - England
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| Posted: Sun May 31, 2009 12:50 am Post subject: Bonding for Fueling |
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Sorry I missed this thread: why is the exhaust pipe a bad place to connect
the bonding cable to
John
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mrspudandcompany(at)veriz
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| Posted: Sun May 31, 2009 5:47 am Post subject: Bonding for Fueling |
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Sorry I missed this thread: why is the exhaust pipe a bad place to connect
the bonding cable to
John
IT'S NOT! Some listers, who don't understand, seem to feel that you need a
low resistance path all the way from the fuel tank to the bonding point. In
reality, the static charge is of high voltage and low energy, thus it will
bleed off very quickly through a high impedance path, i.e. Through rusty
exhaust connections etc. So, the exhaust pipe is a good bonding point.
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