Electrical Engineering Cathodic Protection - index
Electrical Engineering Cathodic Protection - ufc_3_570_02n0001
Unified Facilities Criteria (UFC) - ufc_3_570_02n0002
Foreword - ufc_3_570_02n0003
Contents - ufc_3_570_02n0004
Chapter 1 Introduction - ufc_3_570_02n0005
References - ufc_3_570_02n0006
Appendix A - ufc_3_570_02n0007
Military Handbook - ufc_3_570_02n0008
Abstract - ufc_3_570_02n0010
Foreword - ufc_3_570_02n0012
Electrical Engineering Criteria Handbooks and Manuals
Contents - ufc_3_570_02n0014
Contents - Cont'd - ufc_3_570_02n0015
Contents - Cont'd - ufc_3_570_02n0016
Contents - Cont'd - ufc_3_570_02n0017
Contents - Cont'd - ufc_3_570_02n0018
Contents - Cont'd\
Contents - Cont'd - ufc_3_570_02n0020
Contents - Cont'd - ufc_3_570_02n0021
Figures - ufc_3_570_02n0022
Figures - Cont'd - ufc_3_570_02n0023
Figures - Cont'd - ufc_3_570_02n0024
Tables - ufc_3_570_02n0025
Tables - Cont'd - ufc_3_570_02n0026
Section 1: Introduction - ufc_3_570_02n0028
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
Functional Requirements for Cathodic Protection
Figure 5 Sacrificial Anode Cathodic Protection
Connection to Structure
Other Requirements - ufc_3_570_02n0038
Section 3: Criteria for Cathodic Protection
Figure 6 Structure to Electrolyte Potential Measurement
Criteria for Steel
Criteria for Lead
Figure 7 Failure Rate Versus Time
Consequences of Overprotection
Section 4: Cathodic Protection System Design Principles
Table 1 Current Requirements for Cathodic Protection of Bare Steel
Table 2 Current Requirements for Cathodic Protection of Coated Steel
Location of Other Structures in the Area
Figure Temporary Cathodic Protection System for Determining Current Requirements
Basic Design Procedure for Impressed Current Systems
Table 3 Galvanic Anode Size Factors
Table 4 Structure Potential Factor
Table 5 Adjusting Factor for Multiple Anodes (F)
Analysis of Design Factors
Determination of Electrolyte Resistivity
Figure 9 4 - Pin Soil Resistivity Measurement
Chemical Analysis of the Environment
Figure 12 Antimony Electrode Potential Versus pH
Table 6 Corrections Factors - Short Line Coating Conductance
Figure 13 Coating Conductance - Short line Method
Continuity Testing
Figure 15 Continuity Testing - Potential Method
Figure 17 Continuity Testing - Pipe Locator Method
Aboveground Structures
Section 5: Precautions for Cathodic Protection System Design
Figure 19 Interference from Impressed Current Cathodic Protection System
Figure 20 Interference Due to Potential Gradients
Figure 21 Interference Testing
Table 7 Results of Structure-to-Electrolyte Potential Measurements
Figure 23 Measurement of Current Flow in Structure
Control of Interference - Resistive Bonding
Figure 26 Effects of Bonding on Interference Test Potentials
Control of Interference - Sacrificial Anodes
Figure 27 Bonding for Continuity
Hazards Associated with Cathodic Protection
Figure 29 Interference Due to Cathodic Protection of Quaywall
Figure 30 Correction of Interference - Bonding
Section 6: Impressed Current System Design
Figure 31 Equivalent Cathodic Protection Circuit
Simplified Expressions for Common Situations
Paralleling of Anodes
Field Measurement
Effect of Backfill
Structure-to-Electrolyte Resistance
Selection of Power Supply Type
Rectifier Components
Figure 32 Single-Phase - Full-Wave Bridge Rectifier
Meters
Figure 33 Full-Wave Rectified Current
Figure 35 Three-Phase Bridge Circuit
Figure 36 Three-Phase Wye Circuit
Figure 38 Constant Current Rectifier
Figure 40 Multicircuit Constant Current Rectifier
Available Features
Selecting ac Voltage
Lightning Arresters
Figure 41 Efficiency Versus Voltage - Selenium Stacks
Figure 42 Efficiency Versus Voltage - Silicon Stacks
Graphite Anodes - ufc_3_570_02n0101
Figure 43 Anode-toCable Connection - Graphite Anode
Figure 44 Center Connected Graphite Anode
Characteristics - ufc_3_570_02n0104
High Silicon Chromium Bearing Cast Iron (HSCBCI)
Available Sizes
Table 8 Standard HSCBCI Anodes
Table 8 Standard HSCBCI Anodes - Cont'd
Table 9 Special HSCBCI Anodes
Figure 45 Duct Anode
Figure 47 Bridge Deck Anode - Type I
Figure 48 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
Operation - ufc_3_570_02n0118
Table 10 Standard Wire Characteristics
Economic Wire Size
Wire Splices and Connections
Table 11 M Factors for Determining Economic Wire Size
Test Stations - ufc_3_570_02n0123
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 (Sis-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 Isolation 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 Flenged Pipe Installed Below Grade
Figure 72 Insulating Joint Details for Screwed Pipe Connections
Section 7: Sacrificial Anode System Design
Determination of Current Required for Protection
Determination of Structure-to-Electrolyte Resistance
Field Measurement of Anode Output
Seasonal Variation in Anode Output
Figure 73 Efficiency Versus Current Density - Magnesium Anodes
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 19 Zinc Anodes - Special Sizes for Underground or Fresh Water
Table 21 Zinc Anodes - Special Sizes for Use in Seawater
Current Output
Other System Components
Table 22 Aluminum Pier and Piling Anodes - Standard Sizes
Table 23 Type 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 - Cont'd
Table 25 Aluminum Alloy Hull Anodes - Standard Sizes (Type I, II, and III)
Figure 74 Aluminum Alloy Bracelet Anodes
Connections and Splices
Figure 75 Current - Potential Test Station
Section 8: Typical Cathodic Protection Systems
Figure 76 Typical Building Underground Heat and Water Lines
Figure 78 Calvanic 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 Protection
Figure 84 On-Grade Fresh Water Tank Using Suspended Anodes
Figure 86 Horizontal Hot Water Tank - Magnesium Anode Installtion
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 - ufc_3_570_02n0182
Figure 97 Segmented Elevated Tank for Area Calculations
Area of riser pipe
Inimum weight of riser anode material
Figure 98 Anode Spacing for Elevented Steel Tank
Table 27 Technical Data - Commonly Used HSCBCI Anodes
Figure 99 Anode Suspension Arrangement for Elevented 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
Resistance of riser anodes
Voltage drop in riser anode circuit
Riser anode circuit variable resistor
Sizing rectifier for riser
Figure 102 Elevented Steel Water Tank Showing Rectifierand 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 - ufc_3_570_02n0202
Steel Gas Main
Figure 106 Cathodic Protection for Tanks Using Rigid-Mounted Button-Type Anodes
Figure 107 Cathodic Protection System for Gas Main
Design Data - ufc_3_570_02n0206
Computations - ufc_3_570_02n0207
Total weight of anodes for ground bed
Resistance of dc circuit - ufc_3_570_02n0209
Figure 108 Layout of Gas Piping in Residental District
Design Data - ufc_3_570_02n0211
Number of anodes
Figure 109 Cathodic Protection for Black Iron, Hot Water Storage Tank
Design Data - ufc_3_570_02n0214
Number of anodes required
Underground Steel Storage Tank
Figure 110 Galvanic Anode Cathodic Protection of Underground Steel Storage Tank
Computations - ufc_3_570_02n0218
Figure 111 Impressed Current Cathodic Protection for Heating Conduit System
Groundbed Design
Aircraft Multiple Hydrant Refueling System
Computations - ufc_3_570_02n0222
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 - ufc_3_570_02n0227
utput from 32-pound magnesium anodes on shore side
Steel Sheet Piling in Seawater (Impressed Current)
Resistance of dc circuit - ufc_3_570_02n0230
Sizing rectifier requirements
Number of anodes required for current output
Figure 114 Impressed Current Cathodic Protection System
Figure 115 Pier Supported by H Piling for Para. 9.12
Protective current required
Steel H Piling in Seawater (Impressed Current)
Weight of anodes required
Section 10: Installation and Construction Pratices
Joint and Damage Repair
Figure 116 Test Station for Under-Road Casing Isolation
Electrical Connections
Figure 117 Vertical Sacrificial Anode Installation
Figure 119 Horizontal Sacrificial Anode Installation Limited Right-of Way
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
Other Anode Types
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
Generate Alternatives
Benefits
Economic Analysis - Example 1
Alternative 1 - ufc_3_570_02n0266
Alternative 2 - ufc_3_570_02n0267
Alternative 3
Cost/Benefit Analysis
Alternative 1 - ufc_3_570_02n0270
Alternative 2 - ufc_3_570_02n0271
Conclusions and Recommendations - ufc_3_570_02n0272
Alternative 1 - ufc_3_570_02n0273
Alternative 2 - ufc_3_570_02n0274
Alternative 1 - ufc_3_570_02n0275
Alternative 2 - ufc_3_570_02n0276
Section 14: Corrosion Coordinating Committee Participation
Appendix A Underground Corrosion Survey Cheklist
Field Tests That Should Be Conducted - ufc_3_570_02n0281
Work to Accomplish
Section B - Existing Structures
Meeting With A/E or Owner
Field Tests That Should Be Conducted - ufc_3_570_02n0285
Field Tests That Should Be Conducted - Cont'd
Consulting Work To Be Accomplished
Consulting Work To Be Accomplished - Cont'd
Appendix B Economic Life Guidelines
Appendix C Project Year Discount Factors
Appendix D present Value Formula
Appendix E DOT Regulations
General - ufc_3_570_02n0297
Buried or submerged pipelines installed before August 1, 1971
Cathodic protection - ufc_3_570_02n0299
Monitoring
Test stations - ufc_3_570_02n0301
Interference currents
General - ufc_3_570_02n0303
Transmission lines
Corrosion control records
Aluminum structures
External corrosion protection
Cathodic protection system
External corrosion control
Internal corrosion control
References - ufc_3_570_02n0312
References - Cont'd - ufc_3_570_02n0313
Glossary - ufc_3_570_02n0314
Glossary - Cont'd - ufc_3_570_02n0315
Glossary - Cont'd - ufc_3_570_02n0316
Glossary - Cont'd - ufc_3_570_02n0317
Glossary - Cont'd - ufc_3_570_02n0318
Electrical Engineering Cathodic Protection - ufc_3_570_02n0001
Unified Facilities Criteria (UFC) - ufc_3_570_02n0002
Foreword - ufc_3_570_02n0003
Contents - ufc_3_570_02n0004
Chapter 1 Introduction - ufc_3_570_02n0005
References - ufc_3_570_02n0006
Appendix A - ufc_3_570_02n0007
Military Handbook - ufc_3_570_02n0008
Abstract - ufc_3_570_02n0010
Foreword - ufc_3_570_02n0012
Electrical Engineering Criteria Handbooks and Manuals
Contents - ufc_3_570_02n0014
Contents - Cont'd - ufc_3_570_02n0015
Contents - Cont'd - ufc_3_570_02n0016
Contents - Cont'd - ufc_3_570_02n0017
Contents - Cont'd - ufc_3_570_02n0018
Contents - Cont'd\
Contents - Cont'd - ufc_3_570_02n0020
Contents - Cont'd - ufc_3_570_02n0021
Figures - ufc_3_570_02n0022
Figures - Cont'd - ufc_3_570_02n0023
Figures - Cont'd - ufc_3_570_02n0024
Tables - ufc_3_570_02n0025
Tables - Cont'd - ufc_3_570_02n0026
Section 1: Introduction - ufc_3_570_02n0028
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
Functional Requirements for Cathodic Protection
Figure 5 Sacrificial Anode Cathodic Protection
Connection to Structure
Other Requirements - ufc_3_570_02n0038
Section 3: Criteria for Cathodic Protection
Figure 6 Structure to Electrolyte Potential Measurement
Criteria for Steel
Criteria for Lead
Figure 7 Failure Rate Versus Time
Consequences of Overprotection
Section 4: Cathodic Protection System Design Principles
Table 1 Current Requirements for Cathodic Protection of Bare Steel
Table 2 Current Requirements for Cathodic Protection of Coated Steel
Location of Other Structures in the Area
Figure Temporary Cathodic Protection System for Determining Current Requirements
Basic Design Procedure for Impressed Current Systems
Table 3 Galvanic Anode Size Factors
Table 4 Structure Potential Factor
Table 5 Adjusting Factor for Multiple Anodes (F)
Analysis of Design Factors
Determination of Electrolyte Resistivity
Figure 9 4 - Pin Soil Resistivity Measurement
Chemical Analysis of the Environment
Figure 12 Antimony Electrode Potential Versus pH
Table 6 Corrections Factors - Short Line Coating Conductance
Figure 13 Coating Conductance - Short line Method
Continuity Testing
Figure 15 Continuity Testing - Potential Method
Figure 17 Continuity Testing - Pipe Locator Method
Aboveground Structures
Section 5: Precautions for Cathodic Protection System Design
Figure 19 Interference from Impressed Current Cathodic Protection System
Figure 20 Interference Due to Potential Gradients
Figure 21 Interference Testing
Table 7 Results of Structure-to-Electrolyte Potential Measurements
Figure 23 Measurement of Current Flow in Structure
Control of Interference - Resistive Bonding
Figure 26 Effects of Bonding on Interference Test Potentials
Control of Interference - Sacrificial Anodes
Figure 27 Bonding for Continuity
Hazards Associated with Cathodic Protection
Figure 29 Interference Due to Cathodic Protection of Quaywall
Figure 30 Correction of Interference - Bonding
Section 6: Impressed Current System Design
Figure 31 Equivalent Cathodic Protection Circuit
Simplified Expressions for Common Situations
Paralleling of Anodes
Field Measurement
Effect of Backfill
Structure-to-Electrolyte Resistance
Selection of Power Supply Type
Rectifier Components
Figure 32 Single-Phase - Full-Wave Bridge Rectifier
Meters
Figure 33 Full-Wave Rectified Current
Figure 35 Three-Phase Bridge Circuit
Figure 36 Three-Phase Wye Circuit
Figure 38 Constant Current Rectifier
Figure 40 Multicircuit Constant Current Rectifier
Available Features
Selecting ac Voltage
Lightning Arresters
Figure 41 Efficiency Versus Voltage - Selenium Stacks
Figure 42 Efficiency Versus Voltage - Silicon Stacks
Graphite Anodes - ufc_3_570_02n0101
Figure 43 Anode-toCable Connection - Graphite Anode
Figure 44 Center Connected Graphite Anode
Characteristics - ufc_3_570_02n0104
High Silicon Chromium Bearing Cast Iron (HSCBCI)
Available Sizes
Table 8 Standard HSCBCI Anodes
Table 8 Standard HSCBCI Anodes - Cont'd
Table 9 Special HSCBCI Anodes
Figure 45 Duct Anode
Figure 47 Bridge Deck Anode - Type I
Figure 48 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
Operation - ufc_3_570_02n0118
Table 10 Standard Wire Characteristics
Economic Wire Size
Wire Splices and Connections
Table 11 M Factors for Determining Economic Wire Size
Test Stations - ufc_3_570_02n0123
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 (Sis-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 Isolation 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 Flenged Pipe Installed Below Grade
Figure 72 Insulating Joint Details for Screwed Pipe Connections
Section 7: Sacrificial Anode System Design
Determination of Current Required for Protection
Determination of Structure-to-Electrolyte Resistance
Field Measurement of Anode Output
Seasonal Variation in Anode Output
Figure 73 Efficiency Versus Current Density - Magnesium Anodes
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 19 Zinc Anodes - Special Sizes for Underground or Fresh Water
Table 21 Zinc Anodes - Special Sizes for Use in Seawater
Current Output
Other System Components
Table 22 Aluminum Pier and Piling Anodes - Standard Sizes
Table 23 Type 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 - Cont'd
Table 25 Aluminum Alloy Hull Anodes - Standard Sizes (Type I, II, and III)
Figure 74 Aluminum Alloy Bracelet Anodes
Connections and Splices
Figure 75 Current - Potential Test Station
Section 8: Typical Cathodic Protection Systems
Figure 76 Typical Building Underground Heat and Water Lines
Figure 78 Calvanic 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 Protection
Figure 84 On-Grade Fresh Water Tank Using Suspended Anodes
Figure 86 Horizontal Hot Water Tank - Magnesium Anode Installtion
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 - ufc_3_570_02n0182
Figure 97 Segmented Elevated Tank for Area Calculations
Area of riser pipe
Inimum weight of riser anode material
Figure 98 Anode Spacing for Elevented Steel Tank
Table 27 Technical Data - Commonly Used HSCBCI Anodes
Figure 99 Anode Suspension Arrangement for Elevented 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
Resistance of riser anodes
Voltage drop in riser anode circuit
Riser anode circuit variable resistor
Sizing rectifier for riser
Figure 102 Elevented Steel Water Tank Showing Rectifierand 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 - ufc_3_570_02n0202
Steel Gas Main
Figure 106 Cathodic Protection for Tanks Using Rigid-Mounted Button-Type Anodes
Figure 107 Cathodic Protection System for Gas Main
Design Data - ufc_3_570_02n0206
Computations - ufc_3_570_02n0207
Total weight of anodes for ground bed
Resistance of dc circuit - ufc_3_570_02n0209
Figure 108 Layout of Gas Piping in Residental District
Design Data - ufc_3_570_02n0211
Number of anodes
Figure 109 Cathodic Protection for Black Iron, Hot Water Storage Tank
Design Data - ufc_3_570_02n0214
Number of anodes required
Underground Steel Storage Tank
Figure 110 Galvanic Anode Cathodic Protection of Underground Steel Storage Tank
Computations - ufc_3_570_02n0218
Figure 111 Impressed Current Cathodic Protection for Heating Conduit System
Groundbed Design
Aircraft Multiple Hydrant Refueling System
Computations - ufc_3_570_02n0222
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 - ufc_3_570_02n0227
utput from 32-pound magnesium anodes on shore side
Steel Sheet Piling in Seawater (Impressed Current)
Resistance of dc circuit - ufc_3_570_02n0230
Sizing rectifier requirements
Number of anodes required for current output
Figure 114 Impressed Current Cathodic Protection System
Figure 115 Pier Supported by H Piling for Para. 9.12
Protective current required
Steel H Piling in Seawater (Impressed Current)
Weight of anodes required
Section 10: Installation and Construction Pratices
Joint and Damage Repair
Figure 116 Test Station for Under-Road Casing Isolation
Electrical Connections
Figure 117 Vertical Sacrificial Anode Installation
Figure 119 Horizontal Sacrificial Anode Installation Limited Right-of Way
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
Other Anode Types
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
Generate Alternatives
Benefits
Economic Analysis - Example 1
Alternative 1 - ufc_3_570_02n0266
Alternative 2 - ufc_3_570_02n0267
Alternative 3
Cost/Benefit Analysis
Alternative 1 - ufc_3_570_02n0270
Alternative 2 - ufc_3_570_02n0271
Conclusions and Recommendations - ufc_3_570_02n0272
Alternative 1 - ufc_3_570_02n0273
Alternative 2 - ufc_3_570_02n0274
Alternative 1 - ufc_3_570_02n0275
Alternative 2 - ufc_3_570_02n0276
Section 14: Corrosion Coordinating Committee Participation
Appendix A Underground Corrosion Survey Cheklist
Field Tests That Should Be Conducted - ufc_3_570_02n0281
Work to Accomplish
Section B - Existing Structures
Meeting With A/E or Owner
Field Tests That Should Be Conducted - ufc_3_570_02n0285
Field Tests That Should Be Conducted - Cont'd
Consulting Work To Be Accomplished
Consulting Work To Be Accomplished - Cont'd
Appendix B Economic Life Guidelines
Appendix C Project Year Discount Factors
Appendix D present Value Formula
Appendix E DOT Regulations
General - ufc_3_570_02n0297
Buried or submerged pipelines installed before August 1, 1971
Cathodic protection - ufc_3_570_02n0299
Monitoring
Test stations - ufc_3_570_02n0301
Interference currents
General - ufc_3_570_02n0303
Transmission lines
Corrosion control records
Aluminum structures
External corrosion protection
Cathodic protection system
External corrosion control
Internal corrosion control
References - ufc_3_570_02n0312
References - Cont'd - ufc_3_570_02n0313
Glossary - ufc_3_570_02n0314
Glossary - Cont'd - ufc_3_570_02n0315
Glossary - Cont'd - ufc_3_570_02n0316
Glossary - Cont'd - ufc_3_570_02n0317
Glossary - Cont'd - ufc_3_570_02n0318
