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In deliveryUnited KingdomServicesFramework agreement£2,500,000Add to pipeline

ThermoChimie Phase 4 Framework

Awarded to Amentum Clean Energy Limited, Amphos 21 Consulting S.L., BRGM +3 more

Nuclear Waste Services Limited(buyer)

Published
Published 23 May 2025
Deadline
Closed 16 December 2025

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Overview

Nuclear Waste Services Limited has awarded a framework agreement for ThermoChimie Phase 4, a thermodynamic database development project supporting radioactive waste disposal safety assessment, to six contractors: Amentum Clean Energy Limited, Amphos 21 Consulting S.L., BRGM, Galson Sciences Limited, National Nuclear Laboratory, and SCK CEN (awarded 3 March 2026). The framework will provide specialist and non-technical support through desk-based and experimental data generation activities to enhance database traceability, consistency, ease of use, and exhaustivity.

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Lots (4)

  • Lot 1

    Secretariat (One Supplier - Direct Award)

    £500,000Won by Amphos 21 Consulting S.L.Won by Amentum Clean Energy LimitedWon by BRGMWon by SCK CENWon by National Nuclear LaboratoryWon by Galson Sciences Limited
  • Lot 2

    Lot 2 - Database and Website Management / Maintenance (One Supplier - Direct Award)

    £500,000Won by Galson Sciences LimitedWon by Amphos 21 Consulting S.L.
  • Lot 3

    Lot 3 - Desk Studies: Data Generation, Selection, Assessment and Verification (Multiple Suppliers, Mini Competition)

    £500,000Won by Amphos 21 Consulting S.L.Won by Amentum Clean Energy LimitedWon by BRGMWon by SCK CENWon by National Nuclear Laboratory
  • Lot 4

    Lot 4 - Experimental Studies: Data Generation, Model Verification (Multiple Suppliers, Mini Competition)

    £500,000Won by Amphos 21 Consulting S.L.Won by Amentum Clean Energy LimitedWon by BRGMWon by National Nuclear Laboratory

Key details

Country
United Kingdom
Status
In delivery
Category
Services
Estimated value
£2,500,000
Procedure
Open
Contract type
Framework agreement
SME suitable
Yes
Published
23 May 2025
Questions by
27 November 2025
Deadline
Closed
Classification (CPV)
Research and development services and related consultancy services

Award outcome

Award date
3 March 2026
Contract period
1 February 2026 → 31 January 2029
Winners
  • Amentum Clean Energy Limited
  • Amphos 21 Consulting S.L.
  • BRGM
  • Galson Sciences Limited
  • National Nuclear Laboratory
  • SCK CEN

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Notice history

Every published notice in this contracting process, newest first.

  1. Contract

    21 May 2026

  2. Contract

    5 March 2026

  3. Contract Notice

    19 November 2025

  4. Prior Information Notice

    13 November 2025

  5. Prior Information Notice

    17 July 2025

  6. Prior Information Notice

    23 May 2025

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