The use of re-usable transition stop joints in existing fluid filled cables is a viable alternative to complete replacement. A combination of refurbishment and replacement minimises costs. The importance of continuing to collect and classify cable network failures was stressed. Concern was expressed that the operational life of an integrated fibre optic, used to maximise RTTR, may be less than that of the mains cable. Fibre optic warning tape buried in the ground above a cable can offer warning of ground or third party disturbances.
More work is planned.
A wide range of diagnostic tools and methods are available and need to be used to provide informed decision making. No single technique will give all the answers. Caution was expressed that diagnostic operations and tests should not damage cables and worsen conditions. This flashpoint is reported by the technical rapporteur to the event and does not necessarily represent the views of the Institution or the individual speakers at the event. To order a copy of the papers.