TenderOppsIndependent tender search
Upcoming

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

United Kingdom National Nuclear Laboratory Limited · Public undertaking

In brief

United Kingdom National Nuclear Laboratory Limited has announced plans to buy energy and architecture and engineering work. This is an early notice: there is nothing to bid on yet, but it tells you a tender may follow.

The estimated value is £150,000 excluding VAT.

The contract runs for 1 year, starting 15 January 2026.

The buyer says it is suitable for small and medium-sized businesses.

Built from the notice's own fields. Always check the official notice before you bid.

Can I win this?

Competition

Usually high: a median of 12 bids per contract for this buyer (from 13 awards in the last 12 months).

What the notice says

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.

How to bid

  1. Read the full notice on Find a Tender, including any tender documents it links to.
  2. Register your organisation on the Central Digital Platform (through Find a Tender) if you have not already. Suppliers need to be registered to take part in procurements under the Procurement Act 2023.
  3. Follow the submission instructions in the notice; it does not name an e-tendering portal.

Timeline

  1. Preliminary market engagement notice · UK2, notice 067904-2025
  2. Preliminary market engagement notice · UK2, notice 071860-2025

About the buyer

United Kingdom National Nuclear Laboratory LimitedLast 12 months

Procurements

60

Awards

28
All tenders and awards from United Kingdom National Nuclear Laboratory Limited

Similar open tenders

All open energy tenders
  1. SCAPE Construction Works and Services Framework

    Scape Procure LimitedNorth East, North West, Yorkshire and the Humber, East Midlands, West Midlands, East of England, London, South East, South West, Wales, Northern IrelandEnergy and utilities, Construction

    Open9 days leftExpress interest5 lotsSuitable for SMEsFramework

    £8bnframework ceiling
  2. Faith Centre Solar PV and Fall Arrest System Installation

    University of SalfordNorth WestEnergy and utilities, Construction

    Open13 days leftSuitable for SMEsSmall contract

    £90kestimated
  3. Technical Support Services 2026

    Procurement for HousingNorth East, North West, Yorkshire and the Humber, East Midlands, West Midlands, East of England, London, South East, South West, Wales, Northern IrelandArchitecture and engineering, Environmental services

    Open15 days left11 lotsSuitable for SMEsFramework

    £260mframework ceiling
  4. Propane Bulk Supply Delivery and Storage

    Severn Trent Water LimitedNorth East, North West, Yorkshire and the Humber, East Midlands, West Midlands, East of England, London, South East, South WestEnergy and utilities

    Open18 days left5 lotsSuitable for SMEsFramework

    £10mframework ceiling
  5. Delivery, Management and Maintenance of Public & Private EV Infrastructure

    Places for People Group LimitedNorth East, North West, Yorkshire and the Humber, East Midlands, West Midlands, East of England, London, South East, South West, Wales, ScotlandConstruction, Electrical

    Open18 days left2 lotsSuitable for SMEs

    £40mestimated

From notice 067904-2025 on Find a Tender, first published 23 October 2025, last updated 7 November 2025. We last checked for changes on 28 September 2026.