UFC 3-570-06
JANUARY 31 2003
CONTENTS
Page
CHAPTER 1 INTRODUCTION
Paragraph
1-1
SCOPE.............................................................................................. 1-1
1-2
CATHODIC PROTECTION SYSTEMS............................................. 1-1
1-2.1
Application ........................................................................................ 1-1
1-2.2
Benefits ............................................................................................. 1-2
1-3
CP SYSTEM MAINTENANCE .......................................................... 1-2
1-4
CP PROGRAM ELEMENTS ............................................................. 1-2
CHAPTER 2 PRINCIPLES OF OPERATION
Paragraph
2-1
THE CORROSION PROCESS ......................................................... 2-1
2-1.1
Corrosion Cell ................................................................................... 2-1
2-2
TYPES OF CORROSION ................................................................. 2-5
2-2.1
General Corrosion............................................................................. 2-5
2-2.2
Concentration Cell Corrosion ............................................................ 2-6
2-2.3
Galvanic Corrosion............................................................................ 2-10
2-2.4
Stray Current Corrosion .................................................................... 2-14
2-3
RATE OF CORROSION ................................................................... 2-19
2-3.1
Electrical Effects on the Rate of Corrosion ....................................... 2-19
2-3.2
Chemical Effects on the Rate of Corrosion ....................................... 2-20
2-3.3
Area Relationships ............................................................................ 2-22
2-4
GALVANIC SERIES .......................................................................... 2-22
2-5
INTRODUCTION TO CATHODIC PROTECTION ............................ 2-25
2-6
GALVANIC CATHODIC PROTECTION............................................ 2-27
2-6.1
Galvanic Anode Types ...................................................................... 2-30
2-6.2
Advantages and Disadvantages of Galvanic Anode Systems .......... 2-37
2-6.3
Installation of Galvanic Anodes......................................................... 2-37
2-6.4
Galvanic Anode Connection to Structure .......................................... 2-38
2-6.5
Galvanic Test Stations ...................................................................... 2-39
2-7
IMPRESSED CURRENT CATHODIC PROTECTION ...................... 2-41
2-7.1
Impressed Current Rectifiers ............................................................ 2-42
2-7.2
Impressed Current Anode Materials ................................................. 2-44
2-7.3
Types of Impressed Current Anode Beds ......................................... 2-52
2-7.4
Advantages and Disadvantages of Impressed Current
Anode Systems ................................................................................. 2-56
2-7.5
Impressed Current Test Stations ...................................................... 2-56
CHAPTER 3 REQUIREMENTS
Paragraph
3-1
APPLICABLE STANDARDS ............................................................. 3-1
3-2
DESIGN AND CONSTRUCTION CONSIDERATIONS..................... 3-1
3-2.1
Ductile Iron Pipe................................................................................ 3-1
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