---
title: "715173450 - Purification Equipment"
ocid: "ocds-h6vhtk-058520"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-058520"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-058520.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-058520.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "SUBMARINE DELIVERY AGENCY"
published: "2025-10-15"
---

# 715173450 - Purification Equipment

Buyer: SUBMARINE DELIVERY AGENCY  
Current stage: Tender  
OCID: ocds-h6vhtk-058520

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## Summary

The Submarine Delivery Agency is currently in the tender stage for the procurement of purification equipment, essential for controlling the breathable atmosphere aboard submarines and within training establishments. This project, titled "Purification Equipment," is active as of 15 October 2025 and is deemed a Defence and Security Contract. The procurement is based out of Bristol, UK, with a contract value of £41,666,666 (exclusive of VAT). It follows a competitive flexible procedure under the Procurement Act 2023, with key submission deadlines set for 21 November 2025 for expressions of interest. This tender covers services including obsolescence management, equipment maintenance, and technical support, initially scheduled from 1 July 2026 to 30 June 2031, with possible extensions leading up to 2033.

This tender opens significant business growth opportunities, primarily for businesses with expertise in supplying and managing equipment used in strategic and attack class submarines. Companies involved in repair and maintenance services within the defence sector would be well-suited to compete, particularly those with capabilities aligned with the procurement's rigorous technical and commercial criteria. The opportunity to engage with a central government public authority with a special focus on defence and security could provide valuable references and experience for successful bidders. Small and medium-sized enterprises (SMEs) are encouraged to participate, offering the potential for increased market positioning and revenue streams through a long-term partnership.

## Notice

The Purification Equipment (PE) Contract shall deliver the supply and support of essential equipment needed to control the breathable atmosphere on board Submarines, including Authority training establishments. This is inclusive of the Vanguard and Astute class submarines, and any new classes of submarine that may be introduced during the lifetime of the Purification Equipment project. The services to be delivered throughout the Contract shall include Service Management in order to meet and deliver the contractual requirements, Obsolescence Management in order to proactively manage obsolescence for all in-scope equipment, support to maintain a spares inclusive upkeep service including equipment procurement and delivery, and equipment upkeep management including strip, survey and repair of equipment, maintenance activity of equipment, technical support, Operational Defect (OpDef) and defect support, training services, and equipment installation. The Contract shall also include a tasking provision which shall include but not be limited to the following: i. Obsolescence resolution, ii. Codification, iii. Disposals iv. Post Design Services (PDS) activities to include technical upgrades and investigations where required v. Training over and above extant requirements vi. Fleet Time investigations, vii. Defects and repairs viii. Technical assistance ix. Technical investigations x. CONDO support xi. Trials support xii. Equipment root cause analysis xiii. Safety and environmental management system xiv. Operational safety assurance inspections xv. Boat visits and reports xvi. Modifications xvii. Additions and alterations The PE contract shall cover a number of master equipment types and its ancillary components. These Master Equipment types are detailed within the Tender documentation. This tender notice is for the award of a public contract through a competitive flexible procedure in accordance with section 20(1) and (2)(b) of the Procurement Act 2023. It is considered a Defence and Security Contract due to its scope and therefore the relevant provisions of the Procurement Act 2023 relating to defence and security contracts are applicable. The Purification Equipment contract will be initially for five (5) years however the contract shall include two irrevocable one year options to extend the Contract by a further two years taking total contract duration if options invoked to be seven (7) years.

### Lot Information

Lot 1

Options: The right to additional purchases while the contract is valid.

Renewal: Option to extend the Contract for up to two (2) years in any combination of durations

### Planning Information

The Purification Equipment (PE) Contract shall deliver the supply and support of essential equipment needed to control the breathable atmosphere on board Submarines, including Authority training establishments. The services to be delivered throughout the Contract shall include Service Management in order to meet and deliver the contractual requirements, Obsolescence Management in order to proactively management obsolescence for all in-scope equipment, support to maintain a spares inclusive upkeep service including equipment procurement and delivery, and equipment upkeep management including strip, survey and repair of equipment, maintenance activity of equipment, technical support, Operational Defect (OpDef) and defect support, training services, and equipment installation. Post Design Services (PDS) shall be included to cover any work in scope of tasking.
The Submarine Delivery Agency (SDA) has a requirement to supply and support essential equipment needed to control the breathable atmosphere. Consequently, the Authority seeks to assess the commercial market's capability to tender solutions that meet this future procurement need. This process will enable the Authority to plan activities effectively and may assist in shaping the future procurement strategy and defining the scope of the requirement.
For further details, please refer to the Request for Information (RFI) which is included as part of the Opportunity Listing on the Defence Sourcing Portal (DSP). To access the RFI, please go onto ‘view DSP opportunities’ on the DSP webpage.
The Authority welcomes responses to the questions outlined in Annex A. Organisations interested in providing information are invited to contact Emma Hart at Emma.Hart102@mod.gov.uk.
The RFI closure date is 19th September 2025 at 23:59.
This RFI does not represent a contractual commitment of any kind at this time. Any work undergone as a result of this request is done so at your organisations risk. This RFI is not a commitment by the UK Ministry of Defence to place an order or a Tender in the future.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/065722-2025 |
| Notice type | UK4 - Tender Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Competitive flexible procedure |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Planning, Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 15 Oct 2025 |
| Submission deadline | 14 Nov 2025 |
| Future notice date | 6 Oct 2025 |
| Award date | Not specified |
| Contract period | 30 Jun 2026 - 30 Jun 2031 |
| Recurrence | 2031-06-30 |

## Values

| Field | Value |
| --- | --- |
| Tender value | £41,666,666 |
| Lots value | £41,666,666 |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SUBMARINE DELIVERY AGENCY |
| Locality | BRISTOL |
| Post town | Bristol |
| Postcode | BS34 8JH |
| Country | England |
| ITL 1 | TLK South West (England) |
| ITL 2 | TLK5 West of England |
| ITL 3 | TLK52 Bath & North East Somerset and South Gloucestershire |
| Local authority | South Gloucestershire |
| Electoral ward | Stoke Park & Cheswick |
| Westminster constituency | Filton and Bradley Stoke |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 35 - Security, fire-fighting, police and defence equipment
- 50 - Repair and maintenance services

### Codes

- 35512000 - Submarines
- 35512100 - Strategic submarine nuclear fuelled
- 35512200 - Attack submarine nuclear fuelled
- 50000000 - Repair and maintenance services

## Release History

- 15 Oct 2025 at 16:09 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/065722-2025
- 22 Aug 2025 at 15:14 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/051001-2025
- 11 Aug 2025 at 11:55 - Planning - UK1 - Pipeline Notice - https://www.find-tender.service.gov.uk/Notice/047625-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/065722-2025
  15th October 2025 - Tender notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/051001-2025
  22nd August 2025 - Preliminary market engagement notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/047625-2025
  11th August 2025 - Pipeline notice on Find a Tender

## Notice URLs

- https://contracts.mod.uk/go/711829030199E89BB4E9
- https://www.gov.uk/government/organisations/submarine-delivery-agency
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## 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-058520. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-058520.json.