Source: https://tendernation.io/opportunities/01a13bc6-59c4-700d-b90d-3f7e4d33560c/provision-of-instrument-to-determine-uf3-and-uf4-ratio-in-molten-uranic-fuel-sal pending GB open procedure Suitable for SMEs # Provision of Instrument to Determine UF3 and UF4 Ratio in Molten Uranic Fuel Salt Matrices [United Kingdom National Nuclear Laboratory](https://tendernation.io/buyers/united-kingdom-national-nuclear-laboratory) Estimated value £150,000 Published 7 Nov 2025 Deadline Rolling deadline ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Below-threshold contract Buyers cannot shortlist bidders on suitability before tenders are in, so everyone gets to submit a bid (except some larger works contracts). [Procurement Act 2023, section 85](https://www.legislation.gov.uk/ukpga/2023/54/section/85) - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender 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. ## CPV classification Nuclear fuels Nuclear evaluation instruments Nuclear reactors Technical analysis or consultancy services Source Find a Tender (UK) · Notice ocds-h6vhtk-05d2b2-2025-11-07T09:36:39Z [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-05d2b2-2025-11-07T09:36:39Z) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile United Kingdom National Nuclear Laboratory: past awards and live tenders](https://tendernation.io/buyers/united-kingdom-national-nuclear-laboratory) [Sector More Fuels, energy & petroleum products tenders](https://tendernation.io/sectors/fuels-energy) ## More tenders like this [Electricity – Nabava električne energije · VODNE USLUGE d.o.o. · 35 days left · 24 Nov 2026](https://tendernation.io/opportunities/01a156a9-755b-73ae-9cda-fcb9c20b47e0/croatia-electricity-nabava-elektricne-energije) [Petroleum products, fuel, electricity and other sources of energy – Supply of extra-light heating fuel for asphalt plants and central heating · Public Enterprise for Maintenance and Protection of Main and Regional Roads - Skopje · 9 days left · 29 Oct 2026](https://tendernation.io/opportunities/01a156a9-6270-71ac-aa2a-ae70233890d0/north-macedonia-petroleum-products-fuel-electricity-and-other-sources-of-ene) [Electricity, heating, solar and nuclear energy – Zakup energii elektrycznej dla obiektów PWiK Sp. z o.o. na okres od 01.01.2027r. do 31.12.2027r. · Przedsiębiorstwo Wodociągów i Kanalizacji Sp. z o.o. · 21 days left · 10 Nov 2026](https://tendernation.io/opportunities/01a156a9-6533-722e-8db9-b419eb1f571f/poland-electricity-heating-solar-and-nuclear-energy-zakup-energii-elektryc) [Diesel fuel – Drivmedel HVO100 till isbrytare · Sjöfartsverket · 35 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a156a9-67d0-7071-8622-ca0aec2c8901/sweden-diesel-fuel-drivmedel-hvo100-till-isbrytare) [Electricity – Opskrba električnom energijom za potrebe Grada Petrinje za 2027. godinu · Grad Petrinja · 28 days left · 17 Nov 2026](https://tendernation.io/opportunities/01a156aa-16f0-7041-9da6-defbcee07f86/croatia-electricity-opskrba-elektricnom-energijom-za-potrebe-grada-petrinje) [Fuels – Motorni benzin i dizel gorivo · Nastavni zavod za hitnu medicinu Varaždinske županije · 34 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a156a9-67ad-7337-a85a-56234e26ddf5/croatia-fuels-motorni-benzin-i-dizel-gorivo)