FTS UK public procurement

ThermoChimie Phase 4 Framework

Nuclear Waste Services Limited

CompleteOCDS ID ocds-h6vhtk-05230e
Tender value£2,500,0004 awards · 4 contracts

01 Procurement

Tender overview

Updated 21 May 2026
Buyer
Nuclear Waste Services Limited
Status
Complete
Procurement method
Open procedure
Category
services
CPV classification
Not supplied
Tender period
Not supplied — 16 December 2025

Description

The ThermoChimie project (Thermo-Chimie (version applicative 4.4.0)) is a thermodynamic database development project, co-funded by Nuclear Waste Services, NIRAS-ONDRAF, and Andra. A robust, traceable, exhaustive, and dependable thermodynamic database is essential for underpinning a future Environmental Safety Case for the surface, near-surface or deep geological disposal of radioactive waste, as well as to perform a range of sensitivity and scoping calculations in support of ongoing research activities. Phase 4 of the ThermoChimie project is planned to start in February 2026. The ThermoChimie Phase 4 Framework has the overall objective of providing both specialist and non-technical support resource to the consortium, in the form of a range of desk-based and experimental data generation/selection activities. Outlined activities are in support of the four key project success factors: (i) database traceability, (ii) consistency, (iii) east of use, and (iv) exhaustivity.

i

This page represents one OCDS contracting process. Notices can be revised over time. Values may be estimates, award values or contract values and should be read with their displayed stage and date.

02 Awards and contracts

Published award records

4 shown
Active

ThermoChimie Phase 4 Lot 3

Awarded
3 March 2026
Award value
Not supplied
Suppliers
6
Signed contract
7 May 2026
Active

ThermoChimie Phase 4 Lot 1

Awarded
3 March 2026
Award value
Not supplied
Suppliers
2
Signed contract
7 May 2026
Active

ThermoChimie Phase 4 Lot 2

Awarded
3 March 2026
Award value
Not supplied
Suppliers
5
Signed contract
7 May 2026
Active

ThermoChimie Phase 4 Lot 4

Awarded
3 March 2026
Award value
Not supplied
Suppliers
4
Signed contract
7 May 2026

03 Organisations

Buyers, suppliers and other parties

7 parties
Buyer

Nuclear Waste Services Limited

Pelham House, Pelham Drive,, Calderbridge, Seascale, UKD11, CA20 1DB, United Kingdom

GB-PPON PNWB-5846-DYCH
Supplier

Amentum Clean Energy Limited

305 Bridgewater Place, Birchwood Park, Warrington, UKD61, WA3 6XF, United Kingdom

Companies House 01120437 →
Supplier

BRGM

3, Avenue Claude Guillemin, Orléans, FR, 45060, France

GB-PPON PMPR-7342-VBHR
Supplier

National Nuclear Laboratory

5th Floor Chadwick House Warrington Road Birchwood Science Park, Warrington, UKD61, WA3 6AE, United Kingdom

Companies House 03857752 →
Supplier

SCK CEN

Avenue Herrmann-Debrouxlaan 40, Brussel, BG, 1160, Bulgaria

GB-PPON PHTR-3116-QXHL

Companies House links appear only for explicit GB-COH identifiers. BritDB does not create company links from a similar name or address.

04 Provenance

Source for this process

Contains public sector information licensed under the Open Government Licence v3.0. Official external links are available only on the source transition page.