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ASM Handbook

Corrosion: Environments and Industries

Edited by
Stephen D. Cramer
Stephen D. Cramer
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;
Bernard S. Covino, Jr.
Bernard S. Covino, Jr.
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ASM International
Volume
13C
ISBN electronic:
978-1-62708-184-9
Publication date:
2006
Book Chapter

Close-Interval Survey Techniques

By
Drew Hevle
Drew Hevle
El Paso Corporation
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;
Angel Kowalski
Angel Kowalski
CC Technologies, Inc.
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Published:
2006
Page range:
84 - 88
Publication history
September 18, 2006

Abstract

A close-interval survey (CIS) is a series of structure-to-electrolyte direct current potential measurements performed at regular intervals for assessing the level of cathodic protection (CP) on pipelines and other buried or submerged metallic structures. This article describes the equipment required to perform the CIS. It provides a discussion on the activities that should be performed during the preparation and execution of the CIS. The dynamic stray current identification and compensation by CIS is discussed briefly. The article also explains various factors involved in the validation of CIS data. It concludes with information on CIS data interpretation.

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Drew Hevle, Angel Kowalski, 2006. "Close-Interval Survey Techniques", Corrosion: Environments and Industries, Stephen D. Cramer, Bernard S. Covino, Jr.

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