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Sacrificial or Galvanic Anodes Cathodic Protection System is an excellent anticorrosion solution which offers to immerse structures a long-term protection. In TotalEnergies and in the Oil & Gas Industry in general, such system provides confidence, efficiency together with little maintenance over years which is a very good point for the subsea integrity of jackets (or pipelines) when knowing all other operational constraints or corrosion issues that can be met at the surface level.
Thus, from TotalEnergies experience, it has been established that as long as:1/ the CP system is correctly designed (taking into account the applied - or not - painting on the jacket) following the recognized international codes and standards (DNV RP-B-401, ISO 15589-2.
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Information and test methods available to evaluate the effectiveness of cathodic protection (CP) systems used to protect the steel reinforcement of conventionally reinforced atmospherically exposed concrete structures.
Two test methods for evaluating - to an expected lifetime criterion - embeddable anode materials (such as titanium (Ti) mesh) for cathodic protection (CP) of atmospherically exposed steel-reinforced concrete.
The above ground storage tanks in the refinery are experiencing bottom plate underside (soil) corrosion at a high rate of 1mm/year. Results: Failure of 4 tanks within a period of 9 years. Observations, details of the CP survey, tests, results and forward path taken up.
Accepted procedures for applying impressed current cathodic protection to the internal submerged surfaces of steel tanks used for the storage of natural waters. Historical Document 1990
Recommended practices for providing impressed current cathodic protection to the normally submerged steel surfaces inside water storage tanks. Historical Document 1995
Design, installation, operation and maintenance of deep groundbeds to discharge impressed current for cathodic protection of an underground or submerged metallic structure. Historical Document 1972
Application of CP to control external corrosion of carbon steel on-grade storage tank bottoms that are in contact with an electrolyte. Both galvanic anode CP systems and impressed current CP systems.
DOWNLOADABLE HISTORICAL DOCUMENT. Cathodic protection (CP) of reinforcing steel in concrete structures. Impressed current CP for atmospherically exposed reinforced concrete. Not intended for application to prestressed concrete.
Impressed current cathodic protection to the normally submerged steel surfaces inside water storage tanks. Design and installation of cathodic protection systems and methods for determining their effectiveness.
Nondestructive test method for the detection of holidays in a conductive coating (10 to 30 mils (0.25 to 0.76 mm)) film that on the inner wall (bore) of oil field tubular goods. Test apparatus. Procedure. Reporting. Historical Document 1985
A laboratory procedure for determining the potential and current capacity characteristics of aluminum alloy anodes used for cathodic protection. Historical Document 1990