UK Public Sector Contracts & Tenders

The requirement for this procurement is four Rail Replacement Gantries systems for use on the HS1 route. The gantry system must be able to deliver the following requirements and conform to particular interfaces: Key requirements: System must deliver renewals in CP4 System must operate in single-bore tunnel environment System must perform rail replacement activities in weeknight shift System must be capable of exchanging both S&C assets and CWR System must deliver rail, exchange rails, and collect scrap in the same working shift Key considerations for interface groups: Permanent way: The track gauge is 1435mm. The rail type is UIC60 (aka CEN60) on mainly ballasted track with twin block sleepers, and ~50km single track on slab track. The maximum installed cant is 160mm. The maximum gradient is 1 in 40 (2.5%). Open sections have a maximum speed of 300km/h, with track centres spaced at 4.5m. The infrastructure is predominantly built to GC gauge. UIC GB+ gauge applies to the Ashford connecting lines on the NR Network. The most restrictive, W6a gauge applies to a small number of locations on NRHS-managed infrastructure. Buildings & Civils: Several tunnels exist on HS1 including twin tunnels under London from Stratford westwards towards St Pancras and eastwards towards Dagenham. Tunnel depth varies between 24m and 50m. The two London tunnels are 7.5km and 10.1km long and split by Stratford International station. Other major tunnels include the 3.1km tunnel under the Thames at Thurrock in Essex and the 3.2km North Downs Tunnel near Maidstone in Kent. HS1 features several major viaducts with three exceeding 1km in length: Medway Viaduct carries the line over the river Medway adjacent to the M2 motorway, Thurrock Viaduct takes the line over the A282 Dartford Crossing and Ashford Viaduct takes the fast lines over Ashford International station. Signalling & Telecoms (S&T): TVM430 in-cab signalling is used across the infrastructure - except at Ashford and St Pancras International stations which are equipped with the KVB train protection system. Electricfication & Plant (E&P): Catenary compliant with the Energy (High Speed) TSI supplies 25kV at 50Hz AC. The contact wire height is 5080mm above rail level except for the Ashford Station platforms where it is at 4680mm minimum. Maintenance Depot: The infrastructure maintenance depot for HS1, Singlewell Infrastructure Maintenance Depot (SIMD), is located at Singlewell, near to Gravesend, Kent. Storage, maintenance and overhaul of the proposed system would need to take place at SIMD. The contract will also includes the provision of training for Network Rail High Speed personnel to operate and maintain the Gantries once they are delivered to site.

This procurement covers the supply and ongoing technical support of spares and equipment for the Vossloh Cogifer systems installed on the High Speed 1 (HS1) infrastructure maintained by Network Rail High Speed. The appointed supplier will provide a maintained and up-to-date price list, confirmed lead times for all spare parts and components, and act as the single point of contact for all equipment-related enquiries. The scope includes the management of safety case changes, the issue of updated As Built Records, and the provision of revised maintenance instructions where required. The supplier will deliver technical support services including updated user and maintenance manuals, engineering guidance on asset renewal planning, and independent technical investigations. The contract also includes the provision of training for Network Rail High Speed personnel and participation in six-monthly engineering review workshops to ensure continued system alignment, performance, and asset assurance. This procurement relates specifically to Vossloh Cogifer equipment and associated support services and does not extend to wider signalling or infrastructure works.

Cleaning and partial replacement of ballast materials forming part of the structure of the High Speed 1 railway line.

Network Rail (HS) Ltd seeks a High-Speed Grinding service to maintain both Plain Line and Switch & Crossing (S&C) sections of the HS1 infrastructure, primarily during summer maintenance campaigns. The work will also include grinding in ballast and slab track tunnels to enhance rail performance, extend asset life, and control issues such as rolling contact fatigue, corrugation, and spalling. The service will be carried out using specialist grinding vehicles on both up and down lines to restore rail head profile and ensure the long-term integrity of the track.

The requirement for this procurement is four Rail Replacement Gantries systems for use on the HS1 route. The gantry system must be able to deliver the following requirements and conform to particular interfaces: Key requirements: System must deliver renewals in CP4 System must operate in single-bore tunnel environment System must perform rail replacement activities in weeknight shift System must be capable of exchanging both S&C assets and CWR System must deliver rail, exchange rails, and collect scrap in the same working shift Key considerations for interface groups: Permanent way: The track gauge is 1435mm. The rail type is UIC60 (aka CEN60) on mainly ballasted track with twin block sleepers, and ~50km single track on slab track. The maximum installed cant is 160mm. The maximum gradient is 1 in 40 (2.5%). Open sections have a maximum speed of 300km/h, with track centres spaced at 4.5m. The infrastructure is predominantly built to GC gauge. UIC GB+ gauge applies to the Ashford connecting lines on the NR Network. The most restrictive, W6a gauge applies to a small number of locations on NRHS-managed infrastructure. Buildings & Civils: Several tunnels exist on HS1 including twin tunnels under London from Stratford westwards towards St Pancras and eastwards towards Dagenham. Tunnel depth varies between 24m and 50m. The two London tunnels are 7.5km and 10.1km long and split by Stratford International station. Other major tunnels include the 3.1km tunnel under the Thames at Thurrock in Essex and the 3.2km North Downs Tunnel near Maidstone in Kent. HS1 features several major viaducts with three exceeding 1km in length: Medway Viaduct carries the line over the river Medway adjacent to the M2 motorway, Thurrock Viaduct takes the line over the A282 Dartford Crossing and Ashford Viaduct takes the fast lines over Ashford International station. Signalling & Telecoms (S&T): TVM430 in-cab signalling is used across the infrastructure - except at Ashford and St Pancras International stations which are equipped with the KVB train protection system. Electricfication & Plant (E&P): Catenary compliant with the Energy (High Speed) TSI supplies 25kV at 50Hz AC. The contact wire height is 5080mm above rail level except for the Ashford Station platforms where it is at 4680mm minimum. Maintenance Depot: The infrastructure maintenance depot for HS1, Singlewell Infrastructure Maintenance Depot (SIMD), is located at Singlewell, near to Gravesend, Kent. Storage, maintenance and overhaul of the proposed system would need to take place at SIMD. The contract will also includes the provision of training for Network Rail High Speed personnel to operate and maintain the Gantries once they are delivered to site.