DESIGN: ELECTRICAL ENGINEERING CATHODIC PROTECTION
Record of Changes - 3_570_020002
FOREWORD - 3_570_020003
CONTENTS - 3_570_020004
CHAPTER 1. INTRODUCTION - 3_570_020005
REFERENCES-continued - 3_570_020006
APPENDIX A. MIL-HDBK 1004/10 ELECTRICAL ENGINEERING CATHODIC PROTECTION
MILITARY HANDBOOK ELECTRICAL ENGINEERING CATHODIC PROTECTION
FOREWORD - 3_570_020012
ELECTRICAL ENGINEERING CRITERIA HANDBOOKS AND MANUALS
CONTENTS - 3_570_020014
CONTENTS-continued - 3_570_020015
CONTENTS-continued - 3_570_020016
CONTENTS-continued - 3_570_020017
CONTENTS-continued - 3_570_020018
CONTENTS-continued - 3_570_020019
CONTENTS-continued - 3_570_020020
CONTENTS-continued - 3_570_020021
FIGURES - 3_570_020022
FIGURES-continued - 3_570_020023
FIGURES-continued - 3_570_020024
TABLES - 3_570_020025
TABLES-continued - 3_570_020026
Section 1: INTRODUCTION - 3_570_020028
Section 2: CATHODIC PROTECTION CONCEPTS
The Electrochemical Basis for Cathodic Protection
Practical Application of Cathodic Protection
Figure 1. The Electrochemical Cell
Figure 3. Cathodic Protection Cell
Sacrificial Anode Systems
Anode Materials
Impressed Current Systems
Connection to Structure
Section 3: CRITERIA FOR CATHODIC PROTECTION
Figure 6. Structure-to Electrolyte Potential Measurement
Criteria for Steel
Failure Rate Analysis
Consequences of Underprotection
Consequences of Overprotection
Section 4: CATHODIC PROTECTION SYSTEM DESIGN PRINCIPLES
Field Surveys
Current Requirement Tests
Current Requirements
Basic Design Procedure for Sacrificial Anode Systems
Basic Design Procedure for Impressed Current Systems
Table 3. Galvanic Anode Size Factors
Total Resistance Determination
Table 5. Adjusting Factor for Multiple Anodes (F)
Determination of Field Data
Determination of Electrolyte Resistivity
Figure 9. 4-Pin Soil Resistivity Measurement
Chemical Analysis of the Environment
Figure 12. Antimony Electrode Potential Versus pH
Short Line Method
Figure 13. Coating Conductance - Short Line Method
Continuity Testing
Figure 15. Continuity Testing - Potential Method
Figure 17. Continuity Testing - Pipe Locator Method
Corrosion Survey Checklist
Section 5: PRECAUTIONS FOR CATHODIC PROTECTION SYSTEM DESIGN
Figure 19. Interference from Impressed Current Cathodic Protection System
Detecting Interference
Figure 21. Interference Testing
Control of Interference - Anode Bed Location
Figure 23. Measurement of Current Flow in Structure
Control of Interference - Resistive Bonding
Figure 26. Effects of Bonding on Interference Test Potentials
Effects of High Current Density
Figure 27. Bonding for Continuity
Hazards Associated with Cathodic Protection
Induced Alternating Currents
Figure 30. Correction of Interference - Bonding
Section 6: IMPRESSED CURRENT SYSTEM DESIGN
Calculation of Anode-to-Electrolyte Resistance
Simplified Expressions for Common Situations
Paralleling of Anodes
Field Measurement
Effect of Backfill
Determination of Power Supply Requirements
Selection of Power Supply Type
Rectifier Components
Figure 32. Single-Phase - Full-Wave Bridge Rectifier
Standard Rectifier Types
Figure 33. Full-Wave Rectified Current
Special Rectifier Types
Figure 36. Three-Phase Wye Circuit
Figure 38. Constant Current Rectifier
Rectifier Selection and Specifications
Available Features
Selecting ac Voltage
Selenium Versus Silicon Stacks
Figure 41. Efficiency Versus Voltage - Selenium Stacks
Anodes for Impressed Current Systems
Graphite Anodes - 3_570_020101
Figure 43. Anode-to-Cable Connection - Graphite Anode
Figure 44. Center Connected Graphite Anode
High Silicon Cast Iron
High Silicon Chromium Bearing Cast Iron (HSCBCI)
Aluminum - 3_570_020106
Table 8. Standard HSCBCI Anodes
Table 8. Standard HSCBCI Anodes-continued
Table 9. Special HSCBCI Anodes
Figure 45. Duct Anode
Figure 47. Bridge Deck Anode - Type I
Figure 48. Bridge Deck Anode - Type II
Figure 49. Tubular Anode
Figure 50. Anode to Cable Connection - Epoxy Seal
Figure 51. Anode to Cable Connection - Teflon Seal
Figure 52. Center Connected High Silicon Chromium Bearing Cast Iron Anode
Figure 53. Typical Platinized Anode
Other System Components - 3_570_020118
Insulation - 3_570_020119
Economic Wire Size
Wire Splices and Connections
Table 11. M Factors for Determining Economic Wire Size
Test Stations
Figure 54. Flush-Mounted Potential Test Station
Figure 55. Soil Contact Test Station
Figure 56. IR Drop Test Station
Figure 57. Insulating Flange Test Station (Six-Wire)
Figure 58. Wiring for Casing Isolation Test Station
Figure 60. Anode Balancing Resistors
Figure 61. Bonding of a Dresser-Style Coupling
Figure 62. Bonding Methods for Cast Iron Bell-and-Spigot Pipe
Figure 63. Isolating a Protected Line from an Unprotected Line
Figure 64. Electrical Bond
Figure 66. Clamp Type Bonding Joint
Figure 67. Underground Splice
Figure 68. Welded Type Bonding Joint for Slip-On Pipe Installed Aboveground
Figure 69. Test Box for an Insulating Fitting
Figure 70. Steel Insulating Joint Details for Flanged Pipe Installed Below Grade
Figure 72. Insulating Joint Details for Screwed Pipe Connections
Section 7: SACRIFICIAL ANODE SYSTEM DESIGN
Determination of Anode Output
Connecting Cable Resistance
Determination of Number of Anodes Required
Sacrificial Anode Materials
Anode Efficiency
Potentials
Table 12. Standard Alloy Magnesium Anodes - Standard Sizes for Use in Soil
Table 13. Standard Alloy Magnesium Anodes - Standard Sizes for Use in Water
Table 15. Standard Alloy Magnesium Anodes - Elongated
Table 18. Zinc Anodes - Standard Sizes for Underground or Fresh Water
Table 20. Zinc Anodes - Standard Sizes for Use in Seawater
Composition
Aluminum - 3_570_020153
Other System Components - 3_570_020154
Table 22. Aluminum Pier and Piling Anodes - Standard Sizes
Table 23. Type I Aluminum Alloy Anodes - Standard Sizes for Offshore Use
Table 24. Type III Aluminum Alloy Anodes for Offshore Use
Table 24. Type III Aluminum Alloy Anodes for Offshore Use-continued
Table 25. Aluminum Alloy Hull Anodes - Standard Sizes (Types I, II, and III)
Determination of Connecting Wire Size and Type
Connections and Splices
Backfill
Section 8: TYPICAL CATHODIC PROTECTION SYSTEMS
Figure 76. Typical Building Underground Heat and Water Lines
Figure 78. Galvanic Anode Type Cathodic Protection for Coated Underground Sewage Lift Station
Figure 79. Zinc Anode on Reinforced Concrete Block
Figure 80. Radiant Heat or Snow-Melting Piping
Figure 81. Cathodic Protection of Foundation Piles
Figure 83. Impressed Current Cathodic Protectio with Horizontal Anodes for On-Grade Storage Tank
Figure 84. On-Grade Fresh Water Tank Using Suspended Anodes
Figure 86. Horizontal Hot Water Tank- Magnesium Anode Installation
Figure 88. Suspended Anode Cathodic Protection for H-Piling in Seawater
Figure 89. Cathodic Protection for H-Piling in Seawater
Figure 90. Cellular Earth Fill Pier Supports
Figure 91. Elevated Fresh Water Tank Using Suspended Anodes
Figure 92. Cathodic Protection of Tanks using Rigid Floor-Mounted Anodes
Figure 93. Cathodic Protection of Hydraulic Elevator Cylinders
Figure 94. Hydraulic Hoist Cylinder
Figure 95. Typical Cathodic Protection of Underground Tank Farm
Figure 96. Gasoline Service Station System
Section 9: CATHODIC PROTECTION SYSTEM DESIGN EXAMPLES
Design Data - 3_570_020182
Figure 97. Segmented Elevated Tank for Area Calculations
Area of riser pipe
Spacing of main anodes
Figure 98. Anode Spacing for Elevated Steel Water Tank
Table 27. Technical Data - Commonly Used HSCBCI Anodes
Figure 99.Anode Suspension Arrangement for Elevated Steel Water Tank
Figure 100. Equivalent Diameter for Anodes in a Circle in Water Tank
Figure 101. Fringe Factor for Stub Anodes
Current division between main and stub anodes
Selection of stub anodes
Stub anode circuit variable resistor
Riser anode design
Voltage drop in riser anode circuit
Riser anode circuit variable resistor
Sizing rectifier for riser
Figure 102. Elevated Steel Water Tank Showing Rectifier and Anode Arrangement
Elevated Water Tank (Where Ice is Expected)
Figure 103. Hand Hole and Anode Suspension Detail for Elevated Water Tank
Figure 105. Dimensions: Elevated Steel Water Tank
Design Data - 3_570_020202
Steel Gas Main
Figure 106. Cathodic Protection for Tanks Using Rigid-Mounted Button-Type Anodes and Platinized Titanium Wire
Figure 107. Cathodic Protection System for Gas Main
Design Data - 3_570_020206
Number of anodes required - 3_570_020207
Actual resistance
Resistance of dc circuit - 3_570_020209
Figure 108. Layout of Gas Piping in Residential District
Design Data - 3_570_020211
Number of anodes (n)
Black Iron, Hot Water Storage Tank
Design Data - 3_570_020214
Number of anodes required - 3_570_020215
Underground Steel Storage Tank
Figure 110. Galvanic Anode Cathodic Protection of Underground Steel Storage Tank
Heating Distribution System
Computations - 3_570_020219
Groundbed Design
Aircraft Multiple Hydrant Refueling System
Computations - 3_570_020222
Figure 112. Galvanic Anode Cathodic Protection for Hydrant Refueling System
Minimum weight of anode material
Steel Sheet Piling in Seawater (Galvanic Anodes)
Figure 113. Galvanic Anode Cathodic Protection System for Steel Sheet Piling Bulkhead
Computations - 3_570_020227
Number of anodes required for current output
Steel Sheet Piling in Seawater (Impressed Current)
Resistance of dc circuit - 3_570_020230
Anode bed design (shore side)
Resistance of dc circuit - 3_570_020232
Steel H Piling in Seawater (Galvanic Anodes)
Design Data - 3_570_020234
Protective current required
Steel H Piling in Seawater (Impressed Current)
Resistance of dc circuit - 3_570_020237
Section 10: INSTALLATION AND CONSTRUCTION PRACTICES
Coatings for Other Structures
Foreign Pipeline Crossings
Electrical Connections - 3_570_020242
Impressed Current Anode Installation
Figure 118. Horizontal Sacrificial Anode Installation When Obstruction is Encountered
Vertical
Figure 120. Vertical HSCBCI Anode Installation
Figure 121. Vertical HSCBCI Anode Installation With Packaged Backfill
Figure 122. Horizontal HSCBCI Anode Installation
Figure 123. Typical Deep Well Anode Cathodic Protection Installation
Figure 124. Deep Anode Installation Details
Impressed Current Rectifier Installation
Figure 125. Typical Pole-Mounted Cathodic Protection Rectifier Installation
Figure 126. Typical Pad-Mounted Cathodic Protection Rectifier Installation
Section 11: SYSTEM CHECKOUT AND INITIAL ADJUSTMENTS
Adjustment of Sacrificial Anode Systems
Section 12: MAINTAINING CATHODIC PROTECTION SYSTEMS
Basic Maintenance Requirements
Figure 127. Form for Recording and Reporting Monthly Rectifier Readings
Figure 128. Form for Recording and Reporting Quarterly Structure-to-Electrode Potentials
DOT Regulations
Section 13: ECONOMIC ANALYSIS
Determine Costs and Benefits
Benefits - 3_570_020264
Economic Analysis - Example 1
Alternative 1
Cost - Alternative 3--Plastic Line
Economic Analysis - Example 2
Cost/Benefit Analysis
Cost - Alternative 2--Steel Line With Cathodic Protection
Compare Costs/Benefits
Economic Analysis - Example 3
Cost - Alternative 2--Galvanic Anode System
Economic Analysis - Example 4
Cost - Alternative 2--Cathodic Protection System Maintenance Discontinued
Economic Analysis Goal
Section 14. CORROSION COORDINATING COMMITTEE PARTICIPATION
APPENDIX A. UNDERGROUND CORROSION SURVEY CHECKLIST
Field Tests That Should Be Conducted - 3_570_020281
Work to Accomplish
SECTION B - EXISTING STRUCTURES
Construction methods used-continued
Field Tests That Should Be Conducted - 3_570_020285
Field Tests That Should Be Conducted-continued
Consulting Work To Be Accomplished
Consulting Work To Be Accomplished-continued
APPENDIX B. ECONOMIC LIFE GUIDELINES
APPENDIX C. PROJECT YEAR DISCOUNT FACTORS
APPENDIX D. PRESENT VALUE FORMULAE
APPENDIX E. DOT REGULATIONS
External corrosion control: Buried or submerged pipeline installed after July 31, 1971-continued
External corrosion control: Examination of buried pipeline when exposed
External corrosion control: Cathodic protection
External corrosion control: Monitoring
xternal corrosion control: Test stations
Internal corrosion control: General
Atmospheric corrosion control: General
Remedial measures: Transmission lines
Corrosion control records
Aluminum structures
External corrosion protection
Cathodic protection system
External corrosion control
Internal corrosion control
REFERENCES - 3_570_020312
REFERENCES-continued - 3_570_020313
GLOSSARY - 3_570_020314
GLOSSARY-continued - 3_570_020315
GLOSSARY-continued - 3_570_020316
GLOSSARY-continued - 3_570_020317
GLOSSARY-continued - 3_570_020318
3_570_02
Record of Changes - 3_570_020002
FOREWORD - 3_570_020003
CONTENTS - 3_570_020004
CHAPTER 1. INTRODUCTION - 3_570_020005
REFERENCES-continued - 3_570_020006
APPENDIX A. MIL-HDBK 1004/10 ELECTRICAL ENGINEERING CATHODIC PROTECTION
MILITARY HANDBOOK ELECTRICAL ENGINEERING CATHODIC PROTECTION
FOREWORD - 3_570_020012
ELECTRICAL ENGINEERING CRITERIA HANDBOOKS AND MANUALS
CONTENTS - 3_570_020014
CONTENTS-continued - 3_570_020015
CONTENTS-continued - 3_570_020016
CONTENTS-continued - 3_570_020017
CONTENTS-continued - 3_570_020018
CONTENTS-continued - 3_570_020019
CONTENTS-continued - 3_570_020020
CONTENTS-continued - 3_570_020021
FIGURES - 3_570_020022
FIGURES-continued - 3_570_020023
FIGURES-continued - 3_570_020024
TABLES - 3_570_020025
TABLES-continued - 3_570_020026
Section 1: INTRODUCTION - 3_570_020028
Section 2: CATHODIC PROTECTION CONCEPTS
The Electrochemical Basis for Cathodic Protection
Practical Application of Cathodic Protection
Figure 1. The Electrochemical Cell
Figure 3. Cathodic Protection Cell
Sacrificial Anode Systems
Anode Materials
Impressed Current Systems
Connection to Structure
Section 3: CRITERIA FOR CATHODIC PROTECTION
Figure 6. Structure-to Electrolyte Potential Measurement
Criteria for Steel
Failure Rate Analysis
Consequences of Underprotection
Consequences of Overprotection
Section 4: CATHODIC PROTECTION SYSTEM DESIGN PRINCIPLES
Field Surveys
Current Requirement Tests
Current Requirements
Basic Design Procedure for Sacrificial Anode Systems
Basic Design Procedure for Impressed Current Systems
Table 3. Galvanic Anode Size Factors
Total Resistance Determination
Table 5. Adjusting Factor for Multiple Anodes (F)
Determination of Field Data
Determination of Electrolyte Resistivity
Figure 9. 4-Pin Soil Resistivity Measurement
Chemical Analysis of the Environment
Figure 12. Antimony Electrode Potential Versus pH
Short Line Method
Figure 13. Coating Conductance - Short Line Method
Continuity Testing
Figure 15. Continuity Testing - Potential Method
Figure 17. Continuity Testing - Pipe Locator Method
Corrosion Survey Checklist
Section 5: PRECAUTIONS FOR CATHODIC PROTECTION SYSTEM DESIGN
Figure 19. Interference from Impressed Current Cathodic Protection System
Detecting Interference
Figure 21. Interference Testing
Control of Interference - Anode Bed Location
Figure 23. Measurement of Current Flow in Structure
Control of Interference - Resistive Bonding
Figure 26. Effects of Bonding on Interference Test Potentials
Effects of High Current Density
Figure 27. Bonding for Continuity
Hazards Associated with Cathodic Protection
Induced Alternating Currents
Figure 30. Correction of Interference - Bonding
Section 6: IMPRESSED CURRENT SYSTEM DESIGN
Calculation of Anode-to-Electrolyte Resistance
Simplified Expressions for Common Situations
Paralleling of Anodes
Field Measurement
Effect of Backfill
Determination of Power Supply Requirements
Selection of Power Supply Type
Rectifier Components
Figure 32. Single-Phase - Full-Wave Bridge Rectifier
Standard Rectifier Types
Figure 33. Full-Wave Rectified Current
Special Rectifier Types
Figure 36. Three-Phase Wye Circuit
Figure 38. Constant Current Rectifier
Rectifier Selection and Specifications
Available Features
Selecting ac Voltage
Selenium Versus Silicon Stacks
Figure 41. Efficiency Versus Voltage - Selenium Stacks
Anodes for Impressed Current Systems
Graphite Anodes - 3_570_020101
Figure 43. Anode-to-Cable Connection - Graphite Anode
Figure 44. Center Connected Graphite Anode
High Silicon Cast Iron
High Silicon Chromium Bearing Cast Iron (HSCBCI)
Aluminum - 3_570_020106
Table 8. Standard HSCBCI Anodes
Table 8. Standard HSCBCI Anodes-continued
Table 9. Special HSCBCI Anodes
Figure 45. Duct Anode
Figure 47. Bridge Deck Anode - Type I
Figure 48. Bridge Deck Anode - Type II
Figure 49. Tubular Anode
Figure 50. Anode to Cable Connection - Epoxy Seal
Figure 51. Anode to Cable Connection - Teflon Seal
Figure 52. Center Connected High Silicon Chromium Bearing Cast Iron Anode
Figure 53. Typical Platinized Anode
Other System Components - 3_570_020118
Insulation - 3_570_020119
Economic Wire Size
Wire Splices and Connections
Table 11. M Factors for Determining Economic Wire Size
Test Stations
Figure 54. Flush-Mounted Potential Test Station
Figure 55. Soil Contact Test Station
Figure 56. IR Drop Test Station
Figure 57. Insulating Flange Test Station (Six-Wire)
Figure 58. Wiring for Casing Isolation Test Station
Figure 60. Anode Balancing Resistors
Figure 61. Bonding of a Dresser-Style Coupling
Figure 62. Bonding Methods for Cast Iron Bell-and-Spigot Pipe
Figure 63. Isolating a Protected Line from an Unprotected Line
Figure 64. Electrical Bond
Figure 66. Clamp Type Bonding Joint
Figure 67. Underground Splice
Figure 68. Welded Type Bonding Joint for Slip-On Pipe Installed Aboveground
Figure 69. Test Box for an Insulating Fitting
Figure 70. Steel Insulating Joint Details for Flanged Pipe Installed Below Grade
Figure 72. Insulating Joint Details for Screwed Pipe Connections
Section 7: SACRIFICIAL ANODE SYSTEM DESIGN
Determination of Anode Output
Connecting Cable Resistance
Determination of Number of Anodes Required
Sacrificial Anode Materials
Anode Efficiency
Potentials
Table 12. Standard Alloy Magnesium Anodes - Standard Sizes for Use in Soil
Table 13. Standard Alloy Magnesium Anodes - Standard Sizes for Use in Water
Table 15. Standard Alloy Magnesium Anodes - Elongated
Table 18. Zinc Anodes - Standard Sizes for Underground or Fresh Water
Table 20. Zinc Anodes - Standard Sizes for Use in Seawater
Composition
Aluminum - 3_570_020153
Other System Components - 3_570_020154
Table 22. Aluminum Pier and Piling Anodes - Standard Sizes
Table 23. Type I Aluminum Alloy Anodes - Standard Sizes for Offshore Use
Table 24. Type III Aluminum Alloy Anodes for Offshore Use
Table 24. Type III Aluminum Alloy Anodes for Offshore Use-continued
Table 25. Aluminum Alloy Hull Anodes - Standard Sizes (Types I, II, and III)
Determination of Connecting Wire Size and Type
Connections and Splices
Backfill
Section 8: TYPICAL CATHODIC PROTECTION SYSTEMS
Figure 76. Typical Building Underground Heat and Water Lines
Figure 78. Galvanic Anode Type Cathodic Protection for Coated Underground Sewage Lift Station
Figure 79. Zinc Anode on Reinforced Concrete Block
Figure 80. Radiant Heat or Snow-Melting Piping
Figure 81. Cathodic Protection of Foundation Piles
Figure 83. Impressed Current Cathodic Protectio with Horizontal Anodes for On-Grade Storage Tank
Figure 84. On-Grade Fresh Water Tank Using Suspended Anodes
Figure 86. Horizontal Hot Water Tank- Magnesium Anode Installation
Figure 88. Suspended Anode Cathodic Protection for H-Piling in Seawater
Figure 89. Cathodic Protection for H-Piling in Seawater
Figure 90. Cellular Earth Fill Pier Supports
Figure 91. Elevated Fresh Water Tank Using Suspended Anodes
Figure 92. Cathodic Protection of Tanks using Rigid Floor-Mounted Anodes
Figure 93. Cathodic Protection of Hydraulic Elevator Cylinders
Figure 94. Hydraulic Hoist Cylinder
Figure 95. Typical Cathodic Protection of Underground Tank Farm
Figure 96. Gasoline Service Station System
Section 9: CATHODIC PROTECTION SYSTEM DESIGN EXAMPLES
Design Data - 3_570_020182
Figure 97. Segmented Elevated Tank for Area Calculations
Area of riser pipe
Spacing of main anodes
Figure 98. Anode Spacing for Elevated Steel Water Tank
Table 27. Technical Data - Commonly Used HSCBCI Anodes
Figure 99.Anode Suspension Arrangement for Elevated Steel Water Tank
Figure 100. Equivalent Diameter for Anodes in a Circle in Water Tank
Figure 101. Fringe Factor for Stub Anodes
Current division between main and stub anodes
Selection of stub anodes
Stub anode circuit variable resistor
Riser anode design
Voltage drop in riser anode circuit
Riser anode circuit variable resistor
Sizing rectifier for riser
Figure 102. Elevated Steel Water Tank Showing Rectifier and Anode Arrangement
Elevated Water Tank (Where Ice is Expected)
Figure 103. Hand Hole and Anode Suspension Detail for Elevated Water Tank
Figure 105. Dimensions: Elevated Steel Water Tank
Design Data - 3_570_020202
Steel Gas Main
Figure 106. Cathodic Protection for Tanks Using Rigid-Mounted Button-Type Anodes and Platinized Titanium Wire
Figure 107. Cathodic Protection System for Gas Main
Design Data - 3_570_020206
Number of anodes required - 3_570_020207
Actual resistance
Resistance of dc circuit - 3_570_020209
Figure 108. Layout of Gas Piping in Residential District
Design Data - 3_570_020211
Number of anodes (n)
Black Iron, Hot Water Storage Tank
Design Data - 3_570_020214
Number of anodes required - 3_570_020215
Underground Steel Storage Tank
Figure 110. Galvanic Anode Cathodic Protection of Underground Steel Storage Tank
Heating Distribution System
Computations - 3_570_020219
Groundbed Design
Aircraft Multiple Hydrant Refueling System
Computations - 3_570_020222
Figure 112. Galvanic Anode Cathodic Protection for Hydrant Refueling System
Minimum weight of anode material
Steel Sheet Piling in Seawater (Galvanic Anodes)
Figure 113. Galvanic Anode Cathodic Protection System for Steel Sheet Piling Bulkhead
Computations - 3_570_020227
Number of anodes required for current output
Steel Sheet Piling in Seawater (Impressed Current)
Resistance of dc circuit - 3_570_020230
Anode bed design (shore side)
Resistance of dc circuit - 3_570_020232
Steel H Piling in Seawater (Galvanic Anodes)
Design Data - 3_570_020234
Protective current required
Steel H Piling in Seawater (Impressed Current)
Resistance of dc circuit - 3_570_020237
Section 10: INSTALLATION AND CONSTRUCTION PRACTICES
Coatings for Other Structures
Foreign Pipeline Crossings
Electrical Connections - 3_570_020242
Impressed Current Anode Installation
Figure 118. Horizontal Sacrificial Anode Installation When Obstruction is Encountered
Vertical
Figure 120. Vertical HSCBCI Anode Installation
Figure 121. Vertical HSCBCI Anode Installation With Packaged Backfill
Figure 122. Horizontal HSCBCI Anode Installation
Figure 123. Typical Deep Well Anode Cathodic Protection Installation
Figure 124. Deep Anode Installation Details
Impressed Current Rectifier Installation
Figure 125. Typical Pole-Mounted Cathodic Protection Rectifier Installation
Figure 126. Typical Pad-Mounted Cathodic Protection Rectifier Installation
Section 11: SYSTEM CHECKOUT AND INITIAL ADJUSTMENTS
Adjustment of Sacrificial Anode Systems
Section 12: MAINTAINING CATHODIC PROTECTION SYSTEMS
Basic Maintenance Requirements
Figure 127. Form for Recording and Reporting Monthly Rectifier Readings
Figure 128. Form for Recording and Reporting Quarterly Structure-to-Electrode Potentials
DOT Regulations
Section 13: ECONOMIC ANALYSIS
Determine Costs and Benefits
Benefits - 3_570_020264
Economic Analysis - Example 1
Alternative 1
Cost - Alternative 3--Plastic Line
Economic Analysis - Example 2
Cost/Benefit Analysis
Cost - Alternative 2--Steel Line With Cathodic Protection
Compare Costs/Benefits
Economic Analysis - Example 3
Cost - Alternative 2--Galvanic Anode System
Economic Analysis - Example 4
Cost - Alternative 2--Cathodic Protection System Maintenance Discontinued
Economic Analysis Goal
Section 14. CORROSION COORDINATING COMMITTEE PARTICIPATION
APPENDIX A. UNDERGROUND CORROSION SURVEY CHECKLIST
Field Tests That Should Be Conducted - 3_570_020281
Work to Accomplish
SECTION B - EXISTING STRUCTURES
Construction methods used-continued
Field Tests That Should Be Conducted - 3_570_020285
Field Tests That Should Be Conducted-continued
Consulting Work To Be Accomplished
Consulting Work To Be Accomplished-continued
APPENDIX B. ECONOMIC LIFE GUIDELINES
APPENDIX C. PROJECT YEAR DISCOUNT FACTORS
APPENDIX D. PRESENT VALUE FORMULAE
APPENDIX E. DOT REGULATIONS
External corrosion control: Buried or submerged pipeline installed after July 31, 1971-continued
External corrosion control: Examination of buried pipeline when exposed
External corrosion control: Cathodic protection
External corrosion control: Monitoring
xternal corrosion control: Test stations
Internal corrosion control: General
Atmospheric corrosion control: General
Remedial measures: Transmission lines
Corrosion control records
Aluminum structures
External corrosion protection
Cathodic protection system
External corrosion control
Internal corrosion control
REFERENCES - 3_570_020312
REFERENCES-continued - 3_570_020313
GLOSSARY - 3_570_020314
GLOSSARY-continued - 3_570_020315
GLOSSARY-continued - 3_570_020316
GLOSSARY-continued - 3_570_020317
GLOSSARY-continued - 3_570_020318
3_570_02
