Survey to determine the level of
cathodic protection being achieved on a system. The survey is conducted on
a monthly, bi-monthly, quarterly or annual
basis and a report is issued based upon the test results. Testing is
conducted in one or all of the following ways:
Pipe-to-structure
potentials are taken.
Test
data is recorded.
Rectifiers
are inspected to determine their operating condition.
Whenever
feasible, the rectifiers are adjusted for maximum performance.
The
operating volts, amps, and potentials are recorded both before and
after the rectifiers are adjusted.
Whenever
feasible, the anodes are inspected to determine their conditions.
The
quantity and type of anodes are recorded whenever possible.
Audio Survey
This survey is conducted to establish whether there are any breaks
in continuity or a need for dielectric isolation on a cathodically
protected line. Once a problem is discovered, repairs are
recommended and usually performed onsite.
Current Test
Testing is performed to establish the level of cathodic protection
needed on a pipeline.
Pipeline Failure Analysis
Testing is conducted using methods such as laboratory testing in
order to establish the cause of and cure for corrosion on a pipeline
or structure.
Span Resistivities Test
This test is conducted to measure the axial span resistance of a
pipeline.
Goudy
Engineering, Inc.
