UFC 3-570-06
JANUARY 31 2003
FIGURES
Title
Figure
2-1
The Corrosion Cell..................................................................................... 2-3
2-2
Corrosion Cell, The Dry Cell battery .......................................................... 2-3
2-3
Concentration Cell Caused by Different Environments.............................. 2-7
2-4
Concentration Cell Caused by Different Concentrations of Oxygen .......... 2-8
2-5
Concentration Cell Caused by Different Concentrations of Water ............. 2-8
2-6
Concentration Cell Caused by Non-Homogenous Soil .............................. 2-9
2-7
Concentration Cell Caused by Concrete and Soil Electrolytes .................. 2-10
2-8
Galvanic Corrosion Cell Caused by Different Metals ................................. 2-11
2-9
Galvanic Corrosion Cell Caused by Old and New Steel ............................ 2-12
2-10
Galvanic Corrosion Cell Caused by Marred and Scratched Surfaces ....... 2-13
2-11
Combination of Many Different Corrosion Cells at Work ........................... 2-14
2-12
Stray Current Corrosion Cell Caused by External Anode and Cathode..... 2-15
2-13
Stray Current Corrosion Cell Caused by a DC Transit System ................. 2-17
2-14
Stray Current Corrosion Cell Caused by an HVDC Transmission System 2-18
2-15
Stray Current Corrosion Cell Caused by a DC Welding Operation ............ 2-18
2-16
Stray Current Corrosion Cell Caused by a Cathodic Protection System ... 2-19
2-17
Effect of Electrolyte pH on the Rate of Corrosion ...................................... 2-22
2-18
Direct Attachment Galvanic (Sacrificial) Cathodic Protection System ....... 2-29
2-19
Distributed Sacrificial (Galvanic) Cathodic Protection System................... 2-30
2-20
Galvanic Anode Installation ....................................................................... 2-38
2-21
Above Grade Test Station ......................................................................... 2-39
2-22
Subsurface Test Station ............................................................................ 2-40
2-23
Potential Current Test Station Connections............................................ 2-40
2-24
Impressed Current Cathodic Protection System........................................ 2-42
2-25
Impressed Current Cathodic Protection System Rectifier.......................... 2-44
2-26
Vertical Remote Impressed Current Cathodic Protection System ............. 2-53
2-27
Horizontal Remote Impressed Current Cathodic Protection System ......... 2-54
2-28
Distributed Impressed Current Cathodic Protection System...................... 2-55
2-29
Deep Remote Impressed Current Cathodic Protection System................. 2-56
2-30
Flush Test Station...................................................................................... 2-57
2-31
Abovegrade Test Station ........................................................................... 2-58
5-1
Troubleshooting Block Diagram................................................................. 5-2
5-2
Typical Rectifier Wiring Diagram ............................................................... 5-4
5-3
Shunt Multiplication Factors ...................................................................... 5-5
5-4
Correction of Interference by Resistive Bonding ....................................... 5-15
5-5
Bonding for Continuity .............................................................................. 5-16
5-6
Use of Galvanic Anodes to Control Interference ....................................... 5-16
5-7
Use of Coating Cathode to Control Interference........................................ 5-17
vi
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