Publisher's Synopsis
Excerpt from A Review of Candidate Methods for Detecting Incipient Defects Due to Aging of Installed Cables in Nuclear Power Plants
There are several advantages, as well as limitations, to the use of tdr techniques to determine the presence of damage or morphological changes in the insulation of a cable. The primary advantage of tdr techniques is the ability to determine the location Of the damage without the removal of the cable from its installation in raceways or conduits. Additionally, since tdr techniques use low-voltage pulses, the method does not stress the cable being tested and thus avoids inducing damage resulting in subsequent cable failure. The primary disadvantage appears to be the lack of discrimination between impedance discontinuities caused by artifacts (such as splices or connectors in the cable) and significant damage to the cable caused by abrasion or cracking of the insulation.
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