---
title: "THOR magnet cooling system"
ocid: "ocds-h6vhtk-06aeee"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-06aeee"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-06aeee.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-06aeee.json"
source: "Find A Tender Service"
current_stage: "Planning"
buyer: "UK ATOMIC ENERGY AUTHORITY"
published: "2026-06-05"
---

# THOR magnet cooling system

Buyer: UK ATOMIC ENERGY AUTHORITY  
Current stage: Planning  
OCID: ocds-h6vhtk-06aeee

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## Summary

The UK Atomic Energy Authority is initiating a procurement process for a tender titled "THOR magnet cooling system," which is in the planning stage. Located at the Culham Science Centre in Oxfordshire, the authority focuses on the development of cooling systems critical for the CHIMERA test rig aimed at emulating a nuclear fusion reactor environment. The relevant industry categories include engineering design services, recirculating coolers, water coolers, cooling-water pumps, refrigeration coils, construction work for cooling towers, and installation work of cooling equipment. Key dates for this procurement include a milestone for market engagement scheduled for 26th June 2026, with the procurement process set to advance further on 3rd July 2026. The tender process is poised to conclude with contract work starting from 7th August 2026 through to the end of December 2026.

This tender offers substantial opportunities for businesses specialised in cooling technology and engineering services, especially those with capabilities in designing and installing complex cooling systems. Small and medium-sized enterprises (SMEs) are particularly encouraged to participate, as the suitability criteria accommodate their involvement. The gross value of the tender is pegged at £120,000, creating a viable opportunity for businesses aiming to expand their operations in the field of advanced engineering solutions for energy applications. Companies adept in the sector and seeking to contribute to the pioneering field of nuclear fusion technology will find this opportunity to be aligned with their growth ambitions.

## Notice

CHIMERA is a planned test rig that aims to replicate the conditions inside a nuclear fusion reactor, excluding the radiation component. Magnets (static and pulse/vertical field magnet) are to be installed as part of the first phase of CHIMERA's installation (dubbed "THOR"). Cooling systems will need to be implemented to continually maintain four cryogenic compressors for the static magnet (SM), and to cool the VFM.

### Planning Information

https://uk.eu-supply.com/app/rfq/rwlentrance_s.asp?PID=106089&TID=100111202&B=

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/053420-2026 |
| Notice type | UK2 - Preliminary Market Engagement Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 5 Jun 2026 |
| Submission deadline | Not specified |
| Future notice date | 3 Jul 2026 |
| Award date | Not specified |
| Contract period | 7 Aug 2026 - 31 Dec 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £100,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | UK ATOMIC ENERGY AUTHORITY |
| Locality | OXFORDSHIRE |
| Post town | Oxford |
| Postcode | OX14 3DB |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ1 Berkshire, Buckinghamshire and Oxfordshire |
| ITL 3 | TLJ14 Oxfordshire CC |
| Local authority | South Oxfordshire |
| Electoral ward | Sandford & the Wittenhams |
| Westminster constituency | Didcot and Wantage |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 31 - Electrical machinery, apparatus, equipment and consumables; lighting
- 42 - Industrial machinery
- 45 - Construction work
- 71 - Architectural, construction, engineering and inspection services

### Codes

- 31141000 - Water coolers
- 42122161 - Cooling-water pumps
- 42943100 - Refrigeration coils
- 42943500 - Recirculating coolers
- 45251150 - Construction work for cooling towers
- 45331230 - Installation work of cooling equipment
- 71320000 - Engineering design services

## Release History

- 5 Jun 2026 at 14:01 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/053420-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/053420-2026
  5th June 2026 - Preliminary market engagement notice on Find a Tender

## Notice URLs

- https://uk.eu-supply.com/app/rfq/rwlentrance_s.asp?PID=106089&TID=100111202&B=
- https://www.gov.uk/government/organisations/uk-atomic-energy-authority
- 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-06aeee. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-06aeee.json.