API 1632 : 1996

Section 1 - General
1.1 Scope
1.2 Referenced Publications
Section 2 - Corrosion of Buried Steel Structures
2.1 Introduction
2.2 Corrosion Processes
2.3 Corrosion Control
Section 3 - Sacrificial Anode Protection
3.1 Description
3.2 Factory-Installed Anodes
3.3 Field-Installed Anodes
3.4 Anode Types and Placement
3.5 Electrical Connections and Isolation
3.6 Evaluating Corrosion Protection
Section 4 - Impressed-Current Protection
4.1 Description
4.2 Rectifier Selection and Operation
4.3 Anode Installation and Connections
4.4 Evaluating Corrosion Protection
Figures
1. Electrochemical Corrosion Cell
2. Corrosion Caused by Differences in Oxygen and
     Moisture Content of Soils
3. Corrosion Caused by Dissimilar Soils
4. Stray Current Corrosion
5. Bimetallic Corrosion
6. Sacrificial Anode Cathodic Protection
7. Impressed-Current Cathodic Protection
Table
1. Practical Galvanic Series

Describes two methods of providing cathodic protection for buried steel petroleum storage and dispensing systems. Provides information about buried steel structures, waste oil tanks, heating oil tanks and automatic lifts at service stations. Coverage includes galvanic corrosion, installation, factory installed anodes, field installed anodes, and rectifier selection and operation. Also gives detailed diagrams.