Zinc
Ribbon Anodes -
Cathodic Protection
AC
Mitigation | Cathodic
Protection | Above
Ground Storage Tanks
Grounding
Rods | Grounding
Mats
Technical
Practices Document 1- Connection Practices
Technical
Practices Document 2- Connection Practices - Crimps
PLATTLINE™ ZINC ANODES FOR ABOVE GROUND
STORAGE TANKS
Cathodic
Protection (CP) is the application of direct current
to reverse the natural tendency for metals to return
to their natural condition as metal oxides (rust). CP
prevents the corrosion process from occurring.
 Corrosion
occurs in the presence of moisture. In Above Ground
Storage Tanks, it is important, both economically and
environmentally, to protect tank bottoms from corrosion.
The area under the tank bottom can become moist and
can remain moist from ground moisture, under-tank condensation
or seam leakage.
Present regulations make protection of the tank bottom
desirable. Whether the tank bottom is the initial bottom
of a new tank, a replacement bottom, or a double bottom,
proper corrosion protection is important.
In the past, replacement bottoms were installed over
the old bottom and welded to the old bottom at the tank
wall. This procedure closes the corrosion circuit, making
the new steel anodic to the old tank bottom, and in
the process accelerating the corrosion process of the
new metal.
Experience has shown that a properly designed and installed
zinc ribbon anode system in the interstitial space between
new and old tank bottoms is very effective at providing
cathodic protection. This system has been recognized
throughout the industry as the most cost effective and
efficient method of corrosion control today.
Plattline™ Zinc Ribbon Anodes provide a simple
and cost effective method of corrosion control for Above
Ground Storage Tank bottoms. The zinc ribbon is self
regulating which means that it will protect the steel
tank bottom when the electrolyte (the sand) is conductive
(moist) only on demand. When the demand decreases, the
zinc ribbon output will decrease as well. No external
power source is required.
Plattline™ is a continuous zinc ribbon and simple
to install. No special tools are required and there
is no need for constant monitoring or maintenance once
the system is installed.
Features
| • |
Easy
to install. Even distribution of current density.
Self-regulating current output. |
| • |
Continuous
lengths enable a variety of designs. |
| • |
Normal
design life of 20 years or more. |
| • |
Anode
configuration is ideal for use in small or limited
spaces. |
Installatio
Plattline ™ Zinc Ribbon Anode can be installed
in several ways. It can be cut into lengths and connected
by a lead wire along the tank bottom or it can be laid
out in a spiral or serpentine fashion in a continuous
length along the tank bottom. Each of these installation
patterns is illustrated in Figure 2 on the next page
and takes place in the sand electrolyte which is approximately
four to six inches deep.
Continued>
E-mail:
plattline@plattbros.com
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