Accession Number : ADA290876

Title :   Off-Potential Measurement Systems for Impressed Current Cathodic Protection.

Descriptive Note : Final rept.,

Corporate Author : CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL ENGINEERING AND MA TERIALS DIV

Personal Author(s) : Hock, Vincent F. ; Setliff, Lewis F. ; Houtz, Wesley A. ; Noble, Michael ; Lewis, Brad J.

PDF Url : ADA290876

Report Date : SEP 1994

Pagination or Media Count : 74

Abstract : The Army currently maintains more than 20,000 underground storage tanks, over 3000 miles of buried pipeline, and more than 3000 elevated water storage tanks, all requiring some form of corrosion control. Impressed current, cathodic protection (CP) systems are a widely used form of corrosion control for these structures. These CP systems contain numerous components that are susceptible to failure if not installed or maintained correctly. To ensure corrosion protection for a structure, the performance of a CP system must be determined in the field. This study investigated off-potential measurement systems-for impressed current CP systems in the laboratory and in the field. Commercially available off-potential measurement devices were investigated to test their reliability in recording off-potentials, which define the effectiveness of a CP system. Off-potential measurement devices were found to provide accurate system performance data. (jg)

Descriptors :   *CORROSION INHIBITION, *CATHODIC PROTECTION, WATER, FAILURE, CERAMIC MATERIALS, RELIABILITY, PIPELINES, BURIED OBJECTS, STORAGE TANKS, ANODES, UNDERGROUND STRUCTURES.

Subject Categories : Industrial Chemistry and Chemical Processing
      Inorganic Chemistry
      Physical Chemistry
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE