---
title: "PQQ for Air Reservoir overhaul"
ocid: "ocds-h6vhtk-05ef80"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05ef80"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05ef80.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05ef80.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "SCOTRAIL TRAINS LIMITED"
published: "2026-06-23"
---

# PQQ for Air Reservoir overhaul

Buyer: SCOTRAIL TRAINS LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-05ef80

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05ef80)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05ef80.json)

## Summary

ScotRail Trains Limited is actively seeking tenders for the provision of Air Reservoir overhaul services, part of a selective procurement process under the industry category of repair, maintenance, and associated services related to railways and other equipment. The project has been divided into two lots, with services required for Class 153, 156, & 158 trains and separately for HST Class 43 Power Car & Mark III Coach, with varying contract periods. The tender process follows a negotiated procedure with prior call for competition, and the deadline for submissions is 24th July 2026. Interested suppliers are encouraged to participate in this tender, which is under the region UKM, and to complete their submissions via the ScotRail e-sourcing portal, Wax Digital.

This tender presents a promising opportunity for businesses specialising in railway maintenance services, particularly those capable of delivering safety-critical overhaul solutions. Companies with experience in handling railway equipment and meeting rigorous standards, as well as those adept in resource management and asset labelling, would be well-suited to compete. Given the allowance to bid for multiple lots, suppliers with comprehensive capabilities in servicing both specified train classes will have the potential to grow significantly within the railway maintenance industry by aligning with ScotRail's strategic overhaul requirements.

## Notice

ScotRail Trains Limited (hereinafter referenced as ScotRail) are looking to tender for the provision of an Air Reservoir (various) overhaul service in accordance with rail safety critical and rail standards, and using Scotrail-provided materials. Noting the Out of Service (OSD) for HSTs, the business has revised the procurement strategy and the tender will now be separated into Lots to account for the differing contract end date required for the HSTs. - Lot 1 - for Class 153, 156 & 158 trains; and - Lot 2 - for HST Class 43 Power Car & Mark III Coach As part of the ITN process Suppliers will be able to bid for one or more Lots. An air reservoir is defined as a vessel (other than a pipe coil or ancillary fitting and part of the compressor) for containing compressed air. The group definition is based on the Reservoirs function, material and vehicle classification. ScotRail Trains Limited reserve the right to add or remove the numbers of overhauls per class of train, as the business requires.

### Lot Information

Air Reservoir overhaul for Class 153, 156 & 158 trains

ScotRail Trains Limited (hereinafter referenced as ScotRail) are looking to tender for the provision of an Air Reservoir (various) overhaul service in accordance with rail safety critical and rail standards, and using Scotrail-provided materials. Noting the Out of Service (OSD) for HSTs, the business has revised the procurement strategy. The tender will now be separated into Lots to account for the differing contract end date required for the HSTs. Lot 1 - for Class 153, 156 & 158 trains; and As part of the ITN process Suppliers will be able to bid for one or more Lots. An air reservoir is defined as a vessel (other than a pipe coil or ancillary fitting and part of the compressor) for containing compressed air. The group definition is based on the Reservoirs function, material and vehicle classification. ScotRail Trains Limited reserve the right to add or remove the numbers of overhauls per class of train, as the business requires. The services must be in accordance with WOSS 310/8 Version 4: Repair Procedure - Dismantling, Cleaning, Examination and Repair, Reassembly and Pain ting, and Test Specification for train classes 153, 156, 158, & HSTs. As part of this service, SRTL requires the supplier to deliver a robust identification labelling system to asset manage each tank to identify the kit and record the overhaul completion date and associated data. Additional information: This is a pre-qualification activity in advance of a formal tender process. To participate, suppliers should access and complete the the pre Qualification Questionnaire published on our e-sourcing portal (wax Digital) at https://scotrail.wax-live.com/S2C/DisplayModules/TradeModules/Negotiations/Opportunities/ListEvents.aspxh

Renewal: Option to extend for a further 12 months

Air Reservoir overhaul for HST Class 43 Power Car & Mark III Coach

ScotRail Trains Limited (hereinafter referenced as ScotRail) are looking to tender for the provision of an Air Reservoir (various) overhaul service in accordance with rail safety critical and rail standards, and using Scotrail-provided materials. Noting the Out of Service (OSD) for HSTs, the business has revised the procurement strategy. The tender will now be separated into Lots to account for the differing contract end date required for the HSTs. Lot 2 - for HST Class 43 Power Car & Mark III Coach As part of the ITN process Suppliers will be able to bid for one or more Lots. An air reservoir is defined as a vessel (other than a pipe coil or ancillary fitting and part of the compressor) for containing compressed air. The group definition is based on the Reservoirs function, material and vehicle classification. ScotRail Trains Limited reserve the right to add or remove the numbers of overhauls per class of train, as the business requires. As part of this service, SRTL requires the supplier to deliver a robust identification labelling system to asset manage each tank to identify the kit and record the overhaul completion date and associated data. Additional information: This is a pre-qualification activity in advance of a formal tender process. To participate, suppliers should access and complete the the pre Qualification Questionnaire published on our e-sourcing portal (wax Digital) at https://scotrail.wax-live.com/S2C/DisplayModules/TradeModules/Negotiations/Opportunities/ListEvents.aspxh

Renewal: Possible extension of up to 12 months

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/058938-2026 |
| Notice type | Planning Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Negotiated procedure with prior call for competition |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Planning, Tender, Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 23 Jun 2026 |
| Submission deadline | 24 Jul 2026 |
| Future notice date | 14 Jun 2026 |
| Award date | 23 Jun 2026 |
| Contract period | Not specified |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £475,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | 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 |

## CPV Codes

### Divisions

- 50 - Repair and maintenance services
- 71 - Architectural, construction, engineering and inspection services

### Codes

- 50220000 - Repair, maintenance and associated services related to railways and other equipment
- 50530000 - Repair and maintenance services of machinery
- 71630000 - Technical inspection and testing services

## Release History

- 23 Jun 2026 at 11:58 - Tender - Tender Notice - https://www.find-tender.service.gov.uk/Notice/058938-2026
- 19 Jun 2026 at 10:09 - Award - Award Notice - https://www.find-tender.service.gov.uk/Notice/057946-2026
- 17 Feb 2026 at 12:54 - Tender - Tender Notice - https://www.find-tender.service.gov.uk/Notice/014292-2026
- 5 Dec 2025 at 11:45 - Planning - Planning Notice - https://www.find-tender.service.gov.uk/Notice/080078-2025

## Notice URLs

- https://api.publiccontractsscotland.gov.uk/v1/Notice?id=ocds-r6ebe6-0000817767
- https://api.publiccontractsscotland.gov.uk/v1/Notice?id=ocds-r6ebe6-0000823762
- https://api.publiccontractsscotland.gov.uk/v1/Notice?id=ocds-r6ebe6-0000835148
- https://scotrail.wax-live.com/S2C/DisplayModules/TradeModules/Negotiations/Opportunities/ListEvents.aspx
- https://scotrail.wax-live.com/S2C/DisplayModules/TradeModules/Negotiations/Opportunities/ListEvents.aspxh
- https://scotrail.wax-live.com/S2C/DisplayModules/TradeModules/negotiations/Sourcing/DocumentMain.aspx?ProjectId=390&DocumentId=391&ApplicationInstanceID=27adc89e-0cb2-4b51-9bc1-34061f10156f
- https://www.publiccontractsscotland.gov.uk/search/Search_AuthProfile.aspx?ID=AA30589
- 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-h6vhtk-05ef80. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05ef80.json.