Numerical Simulation of the Impressed Current Cathodic Protection System for a Reinforced Concrete Structure

2015 ◽  
Author(s):  
Guofu Qiao ◽  
Bingbing Guo ◽  
Jinping Ou
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Cathodic Protection ◽  
Concrete Structure ◽  
Protection System ◽  
Reinforced Concrete Structure ◽  
Impressed Current ◽  
Cathodic Protection System ◽  
Impressed Current Cathodic Protection

Utilization of Variable Resistor for Improvement of Impressed Current Cathodic Protection System on Reinforced Concrete Structures

2015 ◽  
Vol 1125 ◽  
pp. 365-369
Author(s):  
Jin A Jeong ◽  
Chung Kuk Jin
Keyword(s):  
Reinforced Concrete ◽  
Relative Humidity ◽  
Cathodic Protection ◽  
Protected Area ◽  
Protection System ◽  
Mixed Metal Oxide ◽  
Variable Resistor ◽  
Impressed Current ◽  
Cathodic Protection System ◽  
Impressed Current Cathodic Protection

This study is to acquire the confirmation data regarding the impressed current cathodic protection (ICCP) system by using the variable resistor for reinforced concrete specimens for improvement in under-protected area of reinforced concrete specimens. The ICCP system is one of the most promising corrosion protection methods. The Effect of ICCP system can be changed at diverse conditions. Particularly, temperature and relative humidity plays a crucial role in the CP effect. It was possible to confirm the performance of ICCP system by the use of variable resistor in different relative humidity and temperature conditions. The CP potential and current were measured by potentiostat, and 4 hour depolarization potentials were measured after disconnecting with anode for 4 hours. To enhance the effect of cathodic protection system, seawater was used as an electrolyte. Used anode for ICCP system was mixed metal oxide (MMO) titanium. From this study, it could be confirmed that the CP potential and current were highly influenced by temperature and relative humidity, and the CP effect in under-protected area has been improved by the ICCP system using the variable resistor.

BARROW ISLAND CATHODIC PROTECTION SYSTEM — DESIGN, INSTALLATION AND COMMISSIONING

1984 ◽  
Vol 24 (1) ◽  
pp. 160
Author(s):  
A. J. Lees
Keyword(s):  
System Design ◽  
Cathodic Protection ◽  
Oil Field ◽  
Protection System ◽  
Detailed Design ◽  
Pilot Scheme ◽  
Repair Costs ◽  
Impressed Current ◽  
Cathodic Protection System ◽  
Impressed Current Cathodic Protection

The Barrow Island oil field, with an area of about one hundred square kilometres containing over six hundred wells, presents an engineering challenge of vast magnitude in the protection of investment in the wells and their casings against the destructive process of corrosion. The growing incidence of casings leaks and escalation in the costs of repairing externally corroded casings provided the impetus for pilot scheme studies and subsequent design and installation of an impressed current cathodic protection system on a scale not previously undertaken in Australia.Data obtained from pilot scheme tests carried out in the latter half of 1979 established the basis of a feasible design. Detailed design and installation through 1980-81 was followed by commissioning of the first area of the system early in 1982.Design of the cathodic protection system was tailored to the local field conditions; the design was modified when necessary as installation and commissioning difficulties arose. Several minor operational problems encountered to date are still to be resolved.The total initial outlay of $5.7 million should result in minimum cumulative savings in well casing repair costs of $15 million over the next 15 years.

An Impressed Current Cathodic Protection System Applied to a Submarine

CORROSION ◽  
1957 ◽  
Vol 13 (2) ◽  
pp. 52-54 ◽  
Author(s):  
E. E. NELSON
Keyword(s):  
Cathodic Protection ◽  
Silver Chloride ◽  
Protection System ◽  
Copper Anode ◽  
Impressed Current ◽  
Silver Silver ◽  
Cathodic Protection System ◽  
The Cost ◽  
Silver Silver Chloride ◽  
Impressed Current Cathodic Protection

Abstract A cathodic protection system using platinum-clad copper anodes on neoprene shields was installed on a fleet-type submarine. Current was supplied from a rectifier to 11 anodes distributed over the hull, the potential being monitored by 13 silver-silver chloride electrodes at selected locations. The system was operated for a ten-month period of active duty after which inspection on a marine railway showed the hull to be in excellent condition with the vinyl paint functioning well. Three of the anodes were damaged but all the cable seals, insulators and anode shields were found intact. The use of platinum-clad anodes of the type employed seems economically feasible since the cost of these anodes constitutes a small part of the cost of installation. Laboratory tests indicate the desirability of replacing the copper anode core by a silver core as an insurance against anode failure in the event of a perforation of the platinum cladding. 5.2.3

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