Pipe Lining Thickness and Thickness Gages
Publication: Journal of Transportation Engineering
Volume 110, Issue 4
Abstract
Corrosion and incrustation in carbon steel raw water pipes have been problems at many of TVA's fossil and nuclear power plants. Lining existing carbon steel raw water pipes with cement mortar conforming to AWWA C602 requirements is one way to correct these problems. It is possible to measure the thickness of the cement-mortar lining by drilling a small hole through the lining and after measurement is made, the hole can be filled with cement mortar. A better way is to use an eddy-current thickness gage. The thickness measured is a function of the impedance of the probe-pipe system. Each thickness measurement takes only a few seconds and the results are very accurate and stable.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Burrows, M. L., “Theory of Eddy‐Current Flaw Detection,” dissertation presented to the University of Michigan, in 1964, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
2.
Gunn, R., “An Eddy‐Current Method of Flaw Detection in Nonmagnetic Metals,” Transactions, ASME, Vol. 63, 1941, pp. A22–A26.
3.
Lord, W., “A Survey of Electromagnetic Methods of Nondestructive Testing,” Mechanics of Nondestructive Testing, W. W. Stinchcomb, ed., Plenum Press, 1980, pp. 77–100.
4.
Lord, W., “Development of Finite Element Model for Eddy‐Current NDT Phenomena,” EPRI Report No. NP‐2026, Electric Power Research Institute, Sept., 1981.
5.
Sun, C. N., Hoskins, J. M., and Hand, F. R., “Full Scale Testing and Qualification of Cement‐Mortar Lined Carbon Steel Pipe,” TVA Report No. CEB 82‐8, Tennessee Valley Authority, Apr., 1982.
Information & Authors
Information
Published In
Copyright
Copyright © 1984 ASCE.
History
Published online: May 1, 1984
Published in print: May 1984
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.