OpenUnited Kingdom
Class 158 Single Variable Rate Sanding (SVRS) Modification
Key facts
- Country
- United Kingdom
- Region
- UKE21
- Estimated value
- not stated
- Published
- Source
- UK Find a Tender
Description
Following the publication of the RAIB report into the Salisbury Tunnel Junction collision of October 2021 and a further collision in October 2024, where two Cl. 158 TfW units collided on the Cambrian line, Northern has begun to assess the case for installation of variable rate sanding (VRS) on the class 158 fleet. VRS systems apply sand to the railhead at a rate proportional to train speed maintaining the optimum 7.5g of sand per metre of rail, improving the wheel/rail interface adhesion far more than current SFRS systems. VRS has demonstrated that safe train stopping distances can be…
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