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RESEARCH PAPERS: Power: Feedwater Systems

Early Detection of Feedwater-Heater Leaks

[+] Author and Article Information
E. Hansen, R. Godwin

University of Florida, Mechanical Engineering Department, 237 MEB, Gainesville, FL 32611

D. Wood, L. Turner

Florida Power Corporation, 3201 34th Street South, St. Petersburg, FL 33711

J. Eng. Gas Turbines Power 118(1), 198-203 (Jan 01, 1996) (6 pages) doi:10.1115/1.2816539 History: Received March 01, 1992; Revised April 21, 1993; Online November 19, 2007

Abstract

This work describes a method of early detection of feedwater heater leaks. The method uses existing pressure, temperature, and flow measurements. The four leak indicators found were feedwater flow rate, drain temperature, drain cooler approach, and extraction line pressure drop. Deviations from normal operation were plotted for each of these indicators. Statistical process control was applied to these deviations. The progressive enlargement of leaks could be seen over a 10 hour period. The four indicators were shown to be good evidence of a tube leak. This method is an alternative to existing acoustic leak detection methods.

Copyright © 1996 by The American Society of Mechanical Engineers
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