Stale Pre-tender

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

Details

Value
£150,000
Topic
Nuclear fuels
Published
23 October 2025
Submission
14 November 2025

Tender 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.

Timeline

  1. Completed: Pre-tender published23 October 2025
    Current notice

About the buyer

National Nuclear Laboratory is the UK's national nuclear science and technology laboratory, and a Contracting Authority in its own right. Suppliers register on Proactis, the laboratory's e-tendering platform, to bid for contract opportunities. A pipeline of upcoming activities is published roughly every quarter. Crown Commercial Service agreements also route work to suppliers. A university supply chain framework covers postdoctoral research, university consultancy and commercial research contracts. National Nuclear Laboratory is one of nine members of the Shared Services Alliance. The alliance has set up over 50 shared contracts for its members since 2009.

Procurement spend from central entities makes up 66% of overall UK public spend.

Over the past 5 years, most of National Nuclear Laboratory Ltd's contract awards have been in laboratory and precision equipment, architectural and engineering services and research and development.

Relevant CPV codes

  • 09340000 · Nuclear fuels
  • 38940000 · Nuclear evaluation instruments
  • 42151000 · Nuclear reactors
  • 71621000 · Technical analysis or consultancy services

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