Infrastructure

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Replacement of catenary installations

Catenary installations are subject to a natural ageing process, which is affected by local conditions, the incidence of traffic, and environmental influences.

Moreover, the components of catenary installations with their long life-cycle are subject to technological change (availability of spare parts, assembly know-how).

In the course of annual assessments (diagnoses, inspections), the elements that have to be replaced are determined four years in advance. This generous time frame allows for influences from adaptations to facilities and other projects to be taken into account.

Project objectives:

	To replace catenary elements which in part date back to the time of electrification (corrosion damage; statics not in compliance with present-day regulations)
	To replace work contact wires
	To replace insulators which have reached the end of their life-cycle owing to material fatigue
	To replace movable elements of the catenary (switches, pull-offs, etc.) which are subject to natural wear
	To replace technologies such as inclined catenary suspensions which were installed at the time of electrification
	To replace catenary elements which were only provisionally repaired when they broke down during their life-cycle

The project involves...

	Replacement of catenary installations on individual routes and sections according to requirements
	Project planning
	Civil engineering, material orders, assembly