---
title: "Design, certification, supply and installation of Single Variable Rate Sanding (SVRS) to ScotRail's Class 158 Diesel Multiple Units (DMUs)"
ocid: "ocds-r6ebe6-0000793697"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000793697"
markdown_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000793697.md"
json_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000793697.json"
source: "Public Contracts Scotland"
current_stage: "Award"
buyer: "SCOTRAIL TRAINS LIMITED"
published: "2025-04-25"
---

# Design, certification, supply and installation of Single Variable Rate Sanding (SVRS) to ScotRail's Class 158 Diesel Multiple Units (DMUs)

Buyer: SCOTRAIL TRAINS LIMITED  
Current stage: Award  
OCID: ocds-r6ebe6-0000793697

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## Summary

ScotRail Trains Limited has initiated a procurement process for the design, certification, supply, and installation of Single Variable Rate Sanding (SVRS) systems for its Class 158 Diesel Multiple Units (DMUs). This contract, awarded to Siemens Mobility Limited, addresses the need for improved braking performance under low-adhesion conditions. The negotiated procedure was chosen for this contract, without prior call for competition, owing to Siemens Mobility being the only provider capable of meeting the stringent technical and timeline requirements, including previous ROSCO approval and full certification. The installation is planned to begin in Autumn 2025 at engineering depots located in Inverness and Haymarket, UK, ensuring the fleet benefits from enhanced safety measures following several rail network incidents that highlighted the need for urgent upgrades.

This tender provides significant business growth opportunities for companies specialising in advanced railway technology solutions, especially those with expertise in turnkey safety systems for rolling stock. While the award has been completed, businesses that can supply similar systems or related technologies can anticipate future partnerships with ScotRail, particularly as operational safety remains a key focus for the organisation. Businesses with the capacity for rapid adaptation to technical requirements and a proven track record in the railway industry would have been ideal contenders for similar future procurement processes. Such partnerships can potentially lead to growth in market presence and expertise within the rail services category.

## Notice

Turnkey solution for the design, certification, supply, and installation of Single Variable Rate Sanding (SVRS) for ScotRail's Class 158 Diesel Multiple Units (DMUs). ScotRail requires an SVRS system that has previously received technical approval (i.e., ROSCO approval and full certification through the engineering change process). The SVRS systems must be capable of providing proven improvements in braking performance under low-adhesion conditions for the Class 158 DMU fleet. This must be evidenced by industry performance data demonstrating these improvements specifically for the Class 158 DMUs. ScotRail aims to commence fitment in Autumn 2025 to benefit from the system's benefits as soon as possible. ScotRail intends to use the negotiated procedure without prior call for competition to contract with Siemens Mobility Limited. This approach is considered the only viable option, as Siemens Mobility is the only supplier who can provide a technically proven solution with demonstrated performance benefits on an in-service fleet and the capability to meet the challenging project timeline.

### Lot Information

Lot 1

Turnkey solution for the design, certification, supply, and installation of Single Variable Rate Sanding (SVRS) for ScotRail's Class 158 Diesel Multiple Units (DMUs). ScotRail requires an SVRS system that has previously received technical approval (i.e., ROSCO approval and full certification through the engineering change process). The SVRS systems must be capable of providing proven improvements in braking performance under low-adhesion conditions for the Class 158 DMU fleet. This must be evidenced by industry performance data demonstrating these improvements specifically for the Class 158 DMUs. ScotRail aims to commence fitment in Autumn 2025 to benefit from the system's benefits as soon as possible. ScotRail intends to use the negotiated procedure without prior call for competition to contract with Siemens Mobility Limited. This approach is considered the only viable option, as Siemens Mobility is the only supplier who can provide a technically proven solution with demonstrated performance benefits on an in-service fleet and the capability to meet the challenging project timeline.

### Procurement Information

Please see additional information for a full explanation.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Public Contracts Scotland |
| Latest notice | https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=APR528977 |
| Notice type | OJEU - F6 - Contract Award Notice (Utilities) |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Limited |
| Procurement method details | Award procedure without prior publication of a call for competition |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 25 Apr 2025 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 22 Apr 2025 |
| Contract period | Not specified |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Not specified |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SCOTRAIL TRAINS LIMITED |
| Additional buyers | SCOTRAIL TRAINS LIMITED . |
| Locality | GLASGOW |
| Post town | Glasgow |
| Postcode | G2 6HQ |
| Country | Scotland |
| ITL 1 | TLM Scotland |
| ITL 2 | TLM3 West Central Scotland |
| ITL 3 | TLM32 Glasgow City |
| Local authority | Glasgow City |
| Electoral ward | Anderston/City/Yorkhill |
| Westminster constituency | Glasgow North |
| Delivery location | TLM Scotland |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | SIEMENS MOBILITY |

## CPV Codes

### Divisions

- 34 - Transport equipment and auxiliary products to transportation

### Codes

- 34600000 - Railway and tramway locomotives and rolling stock and associated parts
- 34631400 - Wheel axles and tyres and other parts of locomotives or rolling stock

## Release History

- 25 Apr 2025 at 00:00 - Award - OJEU - F6 - Contract Award Notice (Utilities) - https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=APR528977
- 18 Mar 2025 at 00:00 - Award - OJEU - F15 - Voluntary Ex Ante Transparency Notice - https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=MAR526288

## Documents

- https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=MAR526288
  Design, certification, supply and installation of Single Variable Rate Sanding (SVRS) to ScotRail's Class 158 Diesel Multiple Units (DMUs) - Turnkey solution for the design, certification, supply, and installation of Single Variable Rate Sanding (SVRS) for ScotRail's Class 158 Diesel Multiple Units (DMUs). ScotRail requires an SVRS system that has previously received technical approval (i.e., ROSCO approval and full certification through the engineering change process). The SVRS systems must be capable of providing proven improvements in braking performance under low-adhesion conditions for the Class 158 DMU fleet. This must be evidenced by industry performance data demonstrating these improvements specifically for the Class 158 DMUs. ScotRail aims to commence fitment in Autumn 2025 to benefit from the system's benefits as soon as possible. ScotRail intends to use the negotiated procedure without prior call for competition to contract with Siemens Mobility Limited. This approach is considered the only viable option, as Siemens Mobility is the only supplier who can provide a technically proven solution with demonstrated performance benefits on an in-service fleet and the capability to meet the challenging project timeline.
- https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=APR528977
  Design, certification, supply and installation of Single Variable Rate Sanding (SVRS) to ScotRail's Class 158 Diesel Multiple Units (DMUs) - Turnkey solution for the design, certification, supply, and installation of Single Variable Rate Sanding (SVRS) for ScotRail's Class 158 Diesel Multiple Units (DMUs). ScotRail requires an SVRS system that has previously received technical approval (i.e., ROSCO approval and full certification through the engineering change process). The SVRS systems must be capable of providing proven improvements in braking performance under low-adhesion conditions for the Class 158 DMU fleet. This must be evidenced by industry performance data demonstrating these improvements specifically for the Class 158 DMUs. ScotRail aims to commence fitment in Autumn 2025 to benefit from the system's benefits as soon as possible. ScotRail intends to use the negotiated procedure without prior call for competition to contract with Siemens Mobility Limited. This approach is considered the only viable option, as Siemens Mobility is the only supplier who can provide a technically proven solution with demonstrated performance benefits on an in-service fleet and the capability to meet the challenging project timeline.

## Notice URLs

- http://
- https://api.publiccontractsscotland.gov.uk/v1/Notice?id=ocds-r6ebe6-0000793697
- https://www.scotrail.co.uk/

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000793697. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-r6ebe6-0000793697.json.