Official UK procurement notice
Provision of Instrument to Determine UF3 and UF4 Ratio in Molten Uranic Fuel Salt Matrices
Authority: NATIONAL NUCLEAR LABORATORY LIMITED
What is being bought
Published requirement descriptionUKNNL 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.
CPV: Nuclear evaluation instruments · Nuclear fuels · Nuclear reactors · Technical analysis or consultancy services
The lotProcurement structure
single lot · no lot value publishedProcedure terms & legal framework
From the official record- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Services
- Notice status
- Past planning notice
- Procurement threshold
- Below threshold
- Regulatory regime
- Standard
- Commercial structure
- Stand-alone contract (no framework)
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 23 Oct 2025, 15:30 BST
- Last source update
- 7 Nov 2025, 09:36 GMT
- Authority reference
NNLC382- FTS notice number
2025/S 000-071860- Latest notice
- Preliminary market engagement notice (UK2)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-05d2b2Find a Tender
How it was run
Official notice- Submission deadline
- —
Timeline
23 Oct 2025 → 15 Jan 2026 · 5 dates- Planning notice published371 days ago23 Oct 2025, 15:30 BST
- Latest notice published356 days ago7 Nov 2025, 09:36 GMT
- Market engagement348 days ago14 Nov 2025, 23:59 GMT
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: uk.eu-supply.com/app/rfq/rwlentrance_… ↗
- Tender notice expected334 days ago28 Nov 2025, 23:59 GMT
- Contract starts287 days ago15 Jan 2026
Notice history
2 events · 2 releases on Find a Tender · since 23 Oct 2025- Preliminary market engagement notice published23 Oct 2025, 15:30 BSTUK2
- Preliminary market engagement notice published7 Nov 2025, 09:36 GMTUK2
Published amendments (1)
Due to the recent half term in the UK affecting resource availability for some organisations, the deadline to respond to the RFI has been extended by 1 week. The closing date is now 5pm 14th November 2025.
Commercial outcome & contract awards
Pipeline notice- Awards (0)
- No award published
- Contracts (0)
- No contract published
- Bid statistics
- No aggregate bid statistics published
Contracting authority & participating public bodies
Official documents & specifications (2)
Official links; attachments are not copiedNotices published for this procedure
- Preliminary market engagement notice Preliminary market engagement notice on Find a Tender
- Preliminary market engagement notice Preliminary market engagement notice on Find a Tender