A cable failure, independent if it is cause by internal or external strain to the cable, will in most cases change the impedance of the cable in the failure spot. A LIRA test will detect this and accurately locate the failure with accuracy better than 0.3% of the cable length.
This will dramatically save cost for the cable owner, as they can start the contingency plan knowing what equipment they must order to quickly repair the cable.
A LIRA test is a non-destructive test, where a 5V frequency sweep is applied to the cable. This means that the fault location test itself is harmless to the cable, and the LIRA test itself will not cause any more damage to the cable.