| Cathodic
protection has been successfully used to prevent corrosion of structures
immersed in fresh or salt water, buried underground or encased in
concrete. Cathodic protection is often used to supplement coatings
which have been applied to a structure. In cathodic protection,
a very small electrical current flows from an anode to the structure.
This current will cause the electric potential of the structure
to shift in the negative direction. As this shift occurs, the corrosion
reaction slows down and eventually stops. Cathodic protection can
prevent corrosion from occurring in the first place and it can stop
the corrosion process if it has already begun. Cathodic protection
cannot, however, reverse corrosion damage which has already occurred.
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Electrochemical
Devices, Inc. Products
Electrochemical
Devices, Inc. manufactures impressed current anodes, reference electrodes
and constant current rectifiers which are used for corrosion prevention
by the cathodic protection process.
To see an overview of our product line, click on Product
Line Guide.
Our unique modular linear anode as well as probe and low profile
aqueous anodes comprise our A Series. EDI also designs and manufactures
custom anodes and refurbishes aqueous anodes of all designs.
Click on the A Series
Selection Guide for a further description of these products.
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Featured
Product: Linear Anode System
EDI’s Model AT
modular impressed current anode is a linear anode system which offers
a corrosion engineer unmatched flexibility in designing an anode
layout. Linear anode systems such as the Model AT are typically
used beneath above ground storage tanks, alongside pipelines in
a narrow right of way, around marine structures and in other applications
where a moderate linear source of cathodic protection current rather
than an intense point source is preferred. Model AT anodes consist
of a copper cored titanium flat wire coated with either platinum
or mixed metal oxide and attached to an HMWPE insulated bus wire.
The wire pair is surrounded by a flexible plastic mesh. The individual
anodes are 50 feet (15M) long and are terminated with special connectors
which allow a hermetically sealed joint to be made in the field.
Advantages of the Model AT anode system include:
-
Quick Installation - semi-skilled workers can just snap
the individual pieces together. No field welds or splices are
required so no special permits or equipment is necessary.
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Easier Material Handling - individual anodes are very
light, about 2 lbs. (1 kg), and flexible so they readily conform
to the desired layout. Since it is a modular system with all
pieces identical, mixing up pieces in the field is eliminated.
-
Highly Redundant - the entire anode array is a self-balancing
distributed anode. Power is fed to both ends of the array as
well as to intermediate points where necessary. Fewer lead wires
are needed, and the entire circuit will continue to function
as designed even if any wire fails.
-
Quick Delivery - Anode strings for most requirements
can be delivered from stock in about a week.
EDI
Model AT – a truly
unique linear anode system for your application. |
