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Inland
Waterway
Inspection Services
LLC
27233
West Hwy.
Blvd
Katy,
Texas
77494
Main
(281)
391-6311
"The Right Way"
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System Description
"Monitoring
China
River"
"One
Pass System Receiver"
The
"One-pass" system is a
highly accurate pipeline detection method used
to determine both the
horizontal and vertical coordinates of a
pipeline or cable. The pipeline or cable is
electromagnetically
energized with a low frequency AC current at
cathodic protection test
leads points
on each side of the pipeline
crossing. A receiver is calibrated at
known pipe depths (probed) near
the river banks.
The receiver is mated with the on
board computer
running ARiver
software to automatically capture pipeline depth
down to 40
meters (130 ft), water depth, together with
Differential Global Positioning System (DGPS)
in each pass
over the pipeline. At specified intervals, the
pipe readings,
water depth and DGPS readings are
automatically stored into the "One-Pass"
memory system
allowing a
contour survey of the river bed above and
in the areas
surrounding the pipeline.
The ARiver software gathers the necessary
field data,
compiles the
results of the data and translates into a DXF
format made
available in a variety of popular formats.
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