USING CONDITION MONITORING TO PREDICT REMAINING LIFE OF ELECTRIC CABLES [electronic resource].

Published:: Rockville, Md. : U.S. Nuclear Regulatory Commission, 2001.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 10 pages : digital, PDF file
Additional Creators:: Brookhaven National Laboratory, U.S. Nuclear Regulatory Commission, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

Electric cables are passive components used extensively throughout nuclear power stations to perform numerous safety and non-safety functions. It is known that the polymers commonly used to insulate the conductors on these cables can degrade with time; the rate of degradation being dependent on the severity of the conditions in which the cables operate. Cables do not receive routine maintenance and, since it can be very costly, they are not replaced on a regular basis. Therefore, to ensure their continued functional performance, it would be beneficial if condition monitoring techniques could be used to estimate the remaining useful life of these components. A great deal of research has been performed on various condition monitoring techniques for use on electric cables. In a research program sponsored by the U.S. Nuclear Regulatory Commission, several promising techniques were evaluated and found to provide trendable information on the condition of low-voltage electric cables. These techniques may be useful for predicting remaining life if well defined limiting values for the aging properties being measured can be determined. However, each technique has advantages and limitations that must be addressed in order to use it effectively, and the necessary limiting values are not always easy to obtain. This paper discusses how condition monitoring measurements can be used to predict the remaining useful life of electric cables. The attributes of an appropriate condition monitoring technique are presented, and the process to be used in estimating the remaining useful life of a cable is discussed along with the difficulties that must be addressed.

Report Numbers:

E 1.99:bnl--nureg-68237
E 1.99: 401001060
401001060
bnl--nureg-68237

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Other Subject(s):

Note:

Published through SciTech Connect.
03/29/2001.
"bnl--nureg-68237"
" 401001060"
"401001060"
20012 ASME PRESSURE VESSELS AND PIPING CONFERENCE, ATLANTA, GA (US), 07/22/2001--07/26/2001.
GROVE,E.; SOO,P.; LOFARO,R.; VILLARAN,M.

Funding Information:

AC02-98CH10886
W6465

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