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ThermoChimie Phase 4 Framework

Nuclear Waste Services Limited

This public procurement record has 6 releases in its history.

Award

21 May 2026 at 16:04

UK7 - Contract Details Notice
Award

05 Mar 2026 at 16:25

UK6 - Contract Award Notice
Tender

19 Nov 2025 at 15:59

UK4 - Tender Notice
Planning

13 Nov 2025 at 10:18

UK3 - Planned Procurement Notice
Planning

17 Jul 2025 at 13:07

UK2 - Preliminary Market Engagement Notice
Planning

23 May 2025 at 14:21

UK1 - Pipeline Notice
Summary of the contracting process

Nuclear Waste Services Limited, based in Calderbridge, Seascale, United Kingdom, is the contracting authority for the ThermoChimie Phase 4 Framework procurement process, aimed at developing a thermodynamic database vital for the disposal of radioactive waste. The process, which has moved through various stages including planning, tender, and now to award, involves multiple phases, with key dates highlighting a start in February 2026 and completion by 2030. The procurement method used is open, with the framework agreement featuring mini competitions under the framework. Contracts have been awarded across four lots, each set to extend over approximately four years and subject to renewal options. The main industry category is research and development services, and the procurement is valued at £2,500,000, distributed across services related to database and consultancy services.

This extensive framework offers significant business growth opportunities, particularly for large research and consulting firms skilled in thermodynamic data generation and analysis. It's well-suited for organisations capable of providing experimental studies, database management, and collaborative work within a consortium. By participating, businesses can establish a foothold in the nuclear research sector, leveraging the repeat engagements possible under framework agreements. The open procurement process used ensures broad competition, permitting large and experienced international organisations like Galson Sciences Limited, Amphos 21 Consulting S.L., and others to emerge as key suppliers, reinforcing their presence in the European R&D landscape in nuclear technology.

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Notice Information

Notice Title

ThermoChimie Phase 4 Framework

Notice 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.

Lot Information

Lot 1

Secretariat (One Supplier - Direct Award)

Options: Two optional yearly extensions following the original three year durations. These options are at NWS discretion.

Renewal: +1 +1

Lot 2

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

Options: Two optional yearly extensions following the original three year durations. These options are at NWS discretion.

Renewal: +1 +1

Lot 3

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

Options: Two optional yearly extensions following the original three year durations. These options are at NWS discretion.

Renewal: +1 +1

Lot 4

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

Options: Two optional yearly extensions following the original three year durations. These options are at NWS discretion.

Renewal: +1 +1

Planning Information

Please visit https://atamis-2464.my.site.com/s/Welcome for information on this procurement search for reference C26852. More information is available via the documentation on Atamis.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-05230e
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/047310-2026
Current Stage
Award
All Stages
Planning, Tender, Award

Procurement Classification

Notice Type
UK7 - Contract Details Notice
Procurement Type
Framework
Procurement Category
Services
Procurement Method
Open
Procurement Method Details
Open procedure
Tender Suitability
SME
Awardee Scale
Large

Common Procurement Vocabulary (CPV)

CPV Divisions

73 - Research and development services and related consultancy services

CPV Codes

73000000 - Research and development services and related consultancy services

Notice Value(s)

Tender Value
£2,500,000 £1M-£10M
Lots Value
£2,000,000 £1M-£10M
Awards Value
£625,000 £500K-£1M
Contracts Value
£625,000 £500K-£1M

Notice Dates

Publication Date
21 May 20263 months ago
Submission Deadline
16 Dec 2025Expired
Future Notice Date
14 Nov 2025Expired
Award Date
3 Mar 20265 months ago
Contract Period
8 May 2026 - 31 Mar 2030 3-4 years
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Complete
Awards Status
Active
Contracts Status
Active

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Nuclear Waste Services Limited
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
CALDERBRIDGE, SEASCALE
Postcode
CA20 1DB
Postcode Area
Carlisle
Country
England
Major Region (ITL 1)
TLD North West (England)
Basic Region (ITL 2)
TLD1 Cumbria
Small Region (ITL 3)
TLD13 Cumberland
Delivery Location
Not specified
Local Authority
Cumberland
Electoral Ward
Gosforth
Westminster Constituency
Whitehaven and Workington

Supplier Information

Number of Suppliers
6
Supplier Names

Amentum Clean Energy Limited

Amphos 21 Consulting S.L.

BRGM

Galson Sciences Limited

National Nuclear Laboratory

SCK CEN

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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