Abstract
The electrical currents and potentials produced in pipes of intermediate
and very high resistivities by the flow of a charged liquid hydrocarbon
have been investigated. The maximum pipe currents to the ground were
in the range 1 to 6 microamperes. Depending on the electrical resistance
of the pipes, these currents produced potentials ranging from essentially
zero to values in excess of 30,000 volts which were sufficiently
severe to cause electrical breakdown and arcs within some of the
pipes under investigation. It is concluded that hazardous pipe potentials,
resulting from static electricity , can be eliminated in practical
applications if the electrical resistance from each and any portion
of the interior surface of the pipe to ground does not exceed about
10^7 ohms.
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