Stray Current Corrosion in Electrified Rail （在电气化铁路杂散电流腐蚀）.pdfVIP

Stray Current Corrosion in Electrified Rail Systems -- Final Report Dr. Thomas J. Barlo,formerly of Northwestern University Dr. Alan D. Zdunek May 1995 _______________________________________________________________________ Contents • List of Tables and Figures • Executive Summary • Introduction • Objectives and Approach • Literature Review • Transit Operator Interviews • Discussion • Conclusions • Recommendations • Acknowledgement • References _______________________________________________________________________ EXECUTIVE SUMMARY Despite a relatively mature technology for its control, corrosion caused by stray current from electrified rapid-transit systems costs the United States approximately $500 million annually. Part of that cost is the result of corrosion of the electrified rapid-transit system itself, and part is the result of corrosion on neighboring infrastructure components, such as buried pipelines and cables. Detailed costs to either the transit systems or the neighboring infrastructure are not available, and, therefore, this limited study was undertaken for the Infrastructure Technology Institute (1) to assess the scope of stray-current corrosion on the electrified-rail systems based upon information in the literature and from interviews with selected transit-system operators, and (2) to determine whether new or additional corrosion monitoring or mitigation techniques are needed. The literature review was conducted through the Infrastructure Technology Institute Library Services Program, the Transportation Library, and the Seeley G. Mudd Library for Science and Engineering, all at Northwestern University. The interviews were conducted with seven rapid-transit operators, which included the following: (l) Chicago Transit Authority, (2) Port Authority Trans-Hudson Corporation, (3) Metro-North Commuter Railroad Metropolitan Transportation Authority, (4) New York City Transit Authority Metropolitan Transportation Author