Electrical Power Cable Engineering, 3rd Edition

23	Armor Corrosion of Submarine Cables William A. Thue

CONTENTS

23.1    Introduction

23.2    Currents in Armor System

23.3    Corrosion

23.3.1    Corrosion Under Direct Current (DC) Conditions

23.3.2    Corrosion Under AC Conditions

23.4    Field Experience

23.5    Mitigation of Armor Corrosion

References

23.1  INTRODUCTION

Submarine cables generally have a metallic armor consisting of one or two layers wound around the outside of the cable. The main function of the armor is to provide mechanical strength during the installation and recovery of the cable since the conductor alone may not have sufficient tensile strength for this purpose.

The armor provides another function as the path for conduction of the return current. Single-conductor ...