If you are visiting this page, it is certainly because you have discovered imposed current anodes or because you want to know more about cathodic protection. We frequently respond to erroneous information due to a lack of knowledge or due to the association with atmospheric corrosion, which is different from the corrosion in an area where the oxygen level is weak, like in water or in soil.
Cathodic protection is regulated.
In order to provide an effective cathodic protection system to protect a structure such as a residential hot water tank, it is important to ensure a level of polarization of the structure so that the corrosion is permanently neutralized.
The oil and gas industries are standardized and must follow protection criteria established by organizations such as NACE or CERFRACOR to continue operating in their respective domain. These organizations train and certify personnel working in the field and show them methods and practices which allow them to effectively control the external corrosion systems of metal pipes which are buried or submerged. These methods and practices are equally applicable to many other subterranean or submerged metallic structures.
For your information, here is the RP0169-2000 standard which requires compliance with at least one of the following two criteria:
The residual potential must be at least negative -850 mV or more for the metal structure, compared to a copper reference/copper sulfate electrode. The potential must be read when the power source is applied. In addition, the analysis of the collected data must take into account the drop-in tension during an instant shutdown called “off”.
The second criterion stipulates that the protection difference between potential readings, which say “static” and “instant”, must be higher than 100 mV.
The CORRO-PROTEC anode system meets these effectiveness criteria. The tests and design studies were made on more than 350 tanks of all brands, before being marketed.
Imposed current anodes have a determined duration of determined life span.
The effective life span test was done in an independent laboratory recognized by NACE.
The effective life span of the CORRO-PROTEC cathodic protection system was subjected to aging tests in compliance with the NACE TM0108-2008 regulation standard and supervised by a level 4 NACE CP specialist.
The CORRO-PROTEC systems were submitted to this test in 2010 by the DNV GL Laboratory in Columbus, Ohio. The results determined that the imposed current anodes are designed for an effective durationof more than 20 years, regardless of the condition of the water in which they are used.
The materials used are of the greatest importance.
As well, in order to maintain the high level of quality of our products, more tests are carried out:
X-ray test of the MMO anode coating
In order to ensure the density of the MMO coating on the anode, x-ray tests are carried out to highlight the uniformity of the coating layer on the titanium substrate.
A comprehensive test to verify that the coating is smooth, black, and without any scratches to the naked eye.
The anodes are subjected to pressures up to 340 PSI in order to ensure their water tightness and reliability.
Our anodes have been manufactured and tested for over 12 years, using rigorous and constant procedures in order to offer you a more reliable product. Since we continually perform quality testing, we can offer one of the best imposed anode currents on the market.
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