Track Geometry Survey

Synopsis

To maintain the network effectively, the network maintainer has to have an understanding of the track condition at a given moment in time, as well as an appreciation of the rate at which track degradation happens throughout the network. A track geometry survey can benchmark the track condition at any moment in time and assist in future maintenance predictions, so maintenance can be planned and targeted where most urgently needed in the short-term, and medium and long-term maintenance plans developed. Repeating the survey periodically also allows for an assessment of the rate of track degradation over time to be established.

Key Client Issues

The client needed to develop a predictive maintenance strategy for the network, for timely and cost-effective maintenance or replacement (if appropriate) of the fixed infrastructure. A track geometry survey would collect data to assist the client in maintenance planning, so that actions could be implemented at the right time and in the right place. This would reduce the risks of unplanned high cost or unnecessary maintenance activities.

Key client concerns included:

• Establishing when replacement/maintenance is needed.
• Track degradation.

Solutions

Corus undertook a track geometry survey of the entire network, collecting quantative data on factors such as track twist, cant and gauge. Specialist bespoke survey equipment was used to capture data. Automated data analysis provided the outputs for a report that enabled the client to prepare for maintenance.

Key outputs included:

• Data showing severity of geometry degradation throughout the network.
• Areas of priority maintenance.
• Evidence of the rate of track degradation in the instance of a repeat survey, for longer-term maintenance planning.

Client Benefits

Our report enabled the client to:

• Have a snapshot of track geometry condition throughout the network, effectively benchmarking the system.
• Develop and implement a planned maintenance programme.
• Manage maintenance more cost effectively, prioritising activities for the short, medium and long-term.
• Improve vehicle movement safety.
• Improve passenger ride comfort.