The
"Pathfinder" Magnetic
Pigging System, developed in the early 70s. in order to monitor
pipeline pigs and accurately locate
them in the event that they become obstructed.
Please note that
all the products
listed below can be customized to your application.
The system in
its basic form consists of
three elements:
Pipeline
Magnetic Pig:
StarTrak
Magnetic pigs are designed as a
magnetic circuit with
sufficient field strength in order to saturate the wall of the pipeline
through which it is traveling.
The Magnetic
Pig is normally comprised
of a steel body
to which is attached a magnetic section, four urethane cups or discs,
urethane
spacers, a nose plate designed to take shock, and a rear locking
plate.
The Magnetic
section may take the form
of the entire pig
body for smaller sized pigs (under 8" diameter), or a collar (cup
spacer) on larger
diameter pigs.
The magnetic
circuit is designed as two
(2) mild steel
plates with independent magnetic, Neodymium Iron Boron with an energy
factor
of 45M G/Oe, modules around the centerline of the pig, designed to
guide
the magnetic flux through the pipe wall.
We also design
magnetic circuits for
most other pipeline
pigs.
The magnetic
circuit may also be used in
cast urethane
pigs, polly pigs or spherical pigs.
Pig
passage indicators
The station
magnetometers, or statics,
are remote field
passage indicators which allow the operators to monitor
"Pathfinder"
pigs through sections of line. Now available with Orbcomm
Satellite Monitoring, PC desktop / mobile monitoring system.
More
on Station Magnetometers
The Port-A-Sig
a specially designed
station magnetometer
used to monitor magnetic pigs in above ground sections, and during
launch
and receive.
More
on Port-A-Sig
Flux-gate
Gradiometer -
search
instrument
This instrument provides a very
essential part of the
total system, it is used to locate the position of the pig should it
become
obstructed during operations.
The Gradiometer may take the form
of
either a hand held
device, or a "fish" for offshore locations.
These units can also be used in
conjunction with an R.O.V.
or an air bourne vehicle.
More
on Gradiometers
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