Planning

Provision of Instrument to Determine UF3 and UF4 Ratio in Molten Uranic Fuel Salt Matrices

UNITED KINGDOM NATIONAL NUCLEAR LABORATORY

This public procurement record has 2 releases in its history.

PlanningUpdate

07 Nov 2025 at 09:36

UK2 - Preliminary Market Engagement Notice
Planning

23 Oct 2025 at 14:30

UK2 - Preliminary Market Engagement Notice
Summary of the contracting process

The United Kingdom National Nuclear Laboratory (UKNNL) is currently in the planning stage for a procurement process titled "Provision of Instrument to Determine UF3 and UF4 Ratio in Molten Uranic Fuel Salt Matrices." This involves collaboration with Westinghouse at the Springfields Fuels site. The procurement falls under the nuclear industry category, specifically nuclear fuels and technical consultancy services, and is set in the UK. The procurement method revolves around market engagement, with a revised deadline for responding to the Request for Information (RFI) now set for 14th November 2025 at 5pm. This initiative aims to develop a methodology and an instrument critical for a substantial project involving the Integral Molten Salt Reactor (IMSR), with the next notice scheduled for the 28th November 2025.

This tender represents a significant opportunity for businesses specialising in nuclear evaluation instruments and technical analysis services, offering a gross amount value of £180,000. The project, suitable for SMEs, requires expertise in developing innovative measurement solutions that will contribute to advancing nuclear technology. Notably, businesses with experience in creating or testing nuclear fuels and related instruments are well-positioned to compete effectively for this contract. With the contract scheduled to start on 15th January 2026 and conclude by 15th January 2027, participating firms have the opportunity to engage in a project of national importance within the nuclear energy sector.

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Notice Information

Notice Title

Provision of Instrument to Determine UF3 and UF4 Ratio in Molten Uranic Fuel Salt Matrices

Notice Description

UKNNL is in collaboration with Westinghouse on Springfields Fuels (SFL) site in the development and substantiation of a commercial scale process for the manufacture of fuel salt for the Integral Molten Salt Reactor (IMSR) for a client. As part of the customer requirements, the fuel salt material must be provided to a set specification. UKNNL are seeking support to develop a proven methodology and instrument for measurement of the UF3/UF4 ratio that could then be utilised by UKNNL staff for the purposes of supporting the delivery of the fuel salt product to the client.

Planning Information

Please respond by the deadline of 5pm 14th November 2025 by completing and returning the RFI document as per the instructions in the below link. The RFI document and specification are available to download at this address, please sign up to the CTM tendering portal if you have not already: https://uk.eu-supply.com/app/rfq/rwlentrance_s.asp?PID=99345&B=

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-05d2b2
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/071860-2025
Current Stage
Planning
All Stages
Planning

Procurement Classification

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

Common Procurement Vocabulary (CPV)

CPV Divisions

09 - Petroleum products, fuel, electricity and other sources of energy

38 - Laboratory, optical and precision equipments (excl. glasses)

42 - Industrial machinery

71 - Architectural, construction, engineering and inspection services

CPV Codes

09340000 - Nuclear fuels

38940000 - Nuclear evaluation instruments

42151000 - Nuclear reactors

71621000 - Technical analysis or consultancy services

Notice Value(s)

Tender Value
£150,000 £100K-£500K
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
7 Nov 20253 months ago
Submission Deadline
Not specified
Future Notice Date
28 Nov 2025Expired
Award Date
Not specified
Contract Period
15 Jan 2026 - 15 Jan 2027 1-2 years
Recurrence
Not specified

Notice Status

Tender Status
Planning
Lots Status
Planning
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
UNITED KINGDOM NATIONAL NUCLEAR LABORATORY
Contact Name
David Brown
Contact Email
david.brown@uknnl.com
Contact Phone
+44 7801216674

Buyer Location

Locality
WARRINGTON
Postcode
WA3 6AE
Post Town
Warrington
Country
England
Major Region (ITL 1)
TLD North West (England)
Basic Region (ITL 2)
TLD6 Cheshire
Small Region (ITL 3)
TLD61 Warrington
Delivery Location
TLD North West (England)
Local Authority
Warrington
Electoral Ward
Birchwood
Westminster Constituency
Warrington North

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

Download

The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts. 

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