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PROCUREMENT OPPORTUNITY

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

United Kingdom National Nuclear Laboratory · Preliminary market engagement notice on Find a Tender

Tender information last checkedLast checked 30 Sept 2026, 11:30.

Opportunity overview

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.

Classification

  • CPV09340000 — Nuclear fuels
  • CPV38940000 — Nuclear evaluation instruments
  • CPV42151000 — Nuclear reactors
  • CPV71621000 — Technical analysis or consultancy services

Lots

  • Lot LOT-0000Value not stated

Documents and notices

Published notice details

Additional information from the published procurement release. Fields appear only when supplied by the source; check the original notice and tender documents before acting.

Scope, procedure and submissions

Id
NNLC382
Status
planning
Above Threshold
No
Main Procurement Category
services

Amendments

Entry 1
Id
071860-2025
Description
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.

Legal basis

Id
2023/54
Scheme
UKPGA

Communication

Future Notice Date
28 Nov 2025, 23:59

Additional Procurement Categories

goods

Lots and requirements

Entry 1
Id
LOT-0000
Status
planning

Suitability

Sme
Yes

Contract period

Ends
15 Jan 2027, 23:59
Starts
15 Jan 2026, 00:00

Items and delivery

Item 1
Id
LOT-0000
Related Lot
LOT-0000

Delivery locations

Entry 1
Region
UK
Country
GB
Country Name
United Kingdom
Entry 2
Region
UKD
Country
GB
Country Name
United Kingdom
Entry 3
Region
UK
Country
GB
Country Name
United Kingdom
Entry 4
Region
UKD
Country
GB
Country Name
United Kingdom

Additional Classifications

Entry 1
Id
09340000
Scheme
CPV
Description
Nuclear fuels
Entry 2
Id
38940000
Scheme
CPV
Description
Nuclear evaluation instruments
Entry 3
Id
42151000
Scheme
CPV
Description
Nuclear reactors
Entry 4
Id
71621000
Scheme
CPV
Description
Technical analysis or consultancy services

Planning and budget

Documents

Entry 1
Id
067904-2025
Format
text/html
Notice Type
UK2
Description
Preliminary market engagement notice on Find a Tender
Document Type
marketEngagementNotice
Published
23 Oct 2025, 15:30
Entry 2
Id
071860-2025
Format
text/html
Notice Type
UK2
Description
Preliminary market engagement notice on Find a Tender
Document Type
marketEngagementNotice
Published
7 Nov 2025, 09:36

Milestones

Entry 1
Id
engagement
Type
engagement
Status
scheduled
Due
14 Nov 2025, 23:59
Description
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=

Buyer, suppliers and contacts

Organisation 1
Id
GB-PPON-PVXT-8784-YGNV
Name
United Kingdom National Nuclear Laboratory

Roles

buyer

Address

Region
UKD61
Country
GB
Locality
Warrington
Postal Code
WA3 6AE
Country Name
United Kingdom
Street Address
Chadwick House, Birchwood Park

Details

Classifications

Entry 1
Id
publicAuthoritySubCentralGovernment
Scheme
UK_CA_TYPE
Description
Public authority - sub-central government

Identifier

Id
PVXT-8784-YGNV
Scheme
GB-PPON

Contact

Name
David Brown
Telephone
+44 7801216674

Recorded locations

  • Buyer location · Warrington · UKD61 · WA3 6AE · United Kingdom
  • Delivery location · UKD · United Kingdom
  • Delivery location · UK · United Kingdom

Notice and amendment history

1 published notice version reviewed by ProcuraAxis.

1 VERSION
  1. ocds-h6vhtk-05d2b2-2025-11-07T09:36:39ZPreliminary market engagement notice on Find a Tender ·