Official UK procurement notice
ThermoChimie Phase 4 Framework
Authority: Nuclear Waste Services Limited (Public body)
What is being bought4 lots · detail below
Published requirement descriptionThe 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.
CPV: Research and development services and related consultancy services
How this framework works
From the published notice- Type
- Closed framework
- Call-offs
- every call-off is a further competition among the appointed suppliers
- Bids received
- 5 bids on the busiest of 4 lots · 6 suppliers appointed
- Framework period
- 3 yrs · up to 5 yrs from 1 Feb 2026
Published description of the framework
Mini competitions under Framework
Lots and requirements (4)Procurement structure
4 lots · all with a published value · a supplier may bid for at most 3 and win at most 3 of them · same evaluation weights on every lotEvery one of these 4 lots carries the same published figure, £500,000: it is the framework's maximum for the whole notice, not each lot's own budget, and no share per lot is published. The cards below say ceiling above rather than repeat it.
Lot #1Secretariat (One Supplier - Direct Award)AwardedRenewalceiling above
Lot #2Lot 2 - Database and Website Management / Maintenance (One Supplier - Direct Award)AwardedRenewalceiling above
Lot #3Lot 3 - Desk Studies: Data Generation, Selection, Assessment and Verification…AwardedRenewalceiling above
Lot 3 - Desk Studies: Data Generation, Selection, Assessment and Verification (Multiple Suppliers, Mini Competition)
Lot #4Lot 4 - Experimental Studies: Data Generation, Model Verification (Multiple Suppliers,…AwardedRenewalceiling above
Lot 4 - Experimental Studies: Data Generation, Model Verification (Multiple Suppliers, Mini Competition)
What it takes to wini
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Evaluation split and conditions of participation as published; the tender pack may add morei
How this buyer will score bids.
The evaluation criteria and weights exactly as published on the notice, grouped by family (price, quality, social value and so on).
Published sub-criteria (3)
- Technical: 70%
- Commercial: 20%
- Social Value: 10%
Published award criteria (3)
- Technical
- Commercial
- Social Value
- Price carries 20 of 100 points: a 10% discount moves about 2 points. The method statement decides this lot, not the discount.
- “ThermoChimie Phase 4 Framework” is a framework: the contest is a place on its panel, not a single contract: each call-off is a further competition, so the pricing contest starts after appointment.
Price arithmetic assumes straight proportional scoring; the tender pack may use another formula.
Procedure terms & legal framework
From the official record- Procedure method
- Open procedure
- Legal basis
- UKPGA · 2023/54 Procurement Act 2023
- Procurement category
- Services
- Notice status
- Awarded
- Procurement threshold
- Above threshold (FTS publication)
- Regulatory regime
- Standard
- Commercial structure
- Framework agreement
- Who may use the vehicle
- Not stated in the notice; call-off rights may be limited to the establishing authority
- Competition type
- Competitive procedure
- GPA / WTO covered
- Unspecified in notice
- Recurring procurement
- Unspecified in notice
- First published
- 23 May 2025, 14:21 BST
- Last source update
- 21 May 2026, 16:04 BST
- Award evaluation window
- Submission end – 16 Jan 2026
- Authority reference
C26852- FTS notice number
2025/S 000-075362- Latest notice
- Contract details notice (UK7)
- Classification (CPV)
- Delivery area
- Official registry OCID
ocds-h6vhtk-05230eFind a Tender
How it was run
Official notice- Appointment period ends
- 16 Dec 2025, 12:00 GMT
- Clarification deadline
- 27 Nov 2025, 12:00 GMT
- Submission channel
- Official e-sourcing portal
- Electronic submission
- Allowed
- Accepted languages
- en
ITT documents are available on Atamis: atamis-2464.my.site.com/s/Welcome ↗
Submissions should be made via the Atamis portal.
Timeline
23 May 2025 → 21 May 2026 · 11 dates- Planning notice published23 May 2025, 14:21 BST
- Market engagement378 days ago3 Oct 2025, 23:59 BST
Please visit 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.
- Next notice expected336 days ago14 Nov 2025, 23:59 GMT
- Tender notice published331 days ago19 Nov 2025, 15:59 GMT
- Clarification questions by323 days ago27 Nov 2025, 12:00 GMT
- Admission / appointment period ends304 days ago · period end, not a bid countdown16 Dec 2025, 12:00 GMT
- Award decision expected by273 days ago16 Jan 2026, 23:59 GMT
- Contract starts258 days ago1 Feb 2026
- Assessment summaries sent227 days ago4 Mar 2026
- Standstill ends214 days ago16 Mar 2026, 23:59 GMT
- Latest notice published148 days ago21 May 2026, 16:04 BST
Notice history
13 events · 6 releases on Find a Tender · since 23 May 2025- Pipeline notice published23 May 2025, 14:21 BSTUK1
- Preliminary market engagement notice published17 Jul 2025, 13:07 BSTUK2
- Published value updated to £2,500,00017 Jul 2025, 13:07 BSTwas £2,400,000
- Planned procurement notice published13 Nov 2025, 10:18 GMTUK3
- Procurement method changed13 Nov 2025, 10:18 GMT
- Deadline published: 11 Dec 2025, 12:00 GMT13 Nov 2025, 10:18 GMT
- Tender notice published19 Nov 2025, 15:59 GMTUK4
- Status changed to active19 Nov 2025, 15:59 GMT
- Deadline moved to 16 Dec 2025, 12:00 GMT19 Nov 2025, 15:59 GMT+5 days · was 11 Dec 2025, 12:00 GMT
- Contract award notice published5 Mar 2026, 16:25 GMTUK6
- Status changed to complete5 Mar 2026, 16:25 GMT
- Contract signature expected20 Mar 2026, 23:59 GMTscheduled
- Contract details notice published21 May 2026, 16:04 BSTUK7
Routine re-releases (6)
- 2025-11: 1 release · 13 Nov 2025
- 2025-07: 1 release · 17 Jul 2025
- 2025-05: 1 release · 23 May 2025
Commercial outcome & contract awards
Published awards, contracts and bid statistics, not a forecast£625,000 inc. VAT is the framework's published maximum, restated by the publisher on 4 award rows. It is one ceiling, not 4 separate sums, and no share per lot is published; those rows read “ceiling above”.
Contracts
All 4 of these contracts carry the same published figure, £625,000, the framework's maximum for the whole notice, not each contract's own value. They are not eleven separate sums.
ThermoChimie Phase 4 Framework - Lot 1 · Amentum Clean Energy LtdVCSE, Amphos 21 Consulting S.L., BRGM, Galson Sciences Limited., National Nuclear Laboratory, SCK CEN
- Signed
- 8 May 2026
- Value
- ceiling above
- Period
- 8 May 2026 – 31 Mar 2030
- Status
- active
4 agreed KPIs: Effective Contract Management · Quality of Delivery · Timely Delivery …
- Effective Contract Management
- Quality of Delivery
- Timely Delivery
- Delivery of Contract Price
ThermoChimie Phase 4 Framework - Lot 2 · Amphos 21 Consulting S.L., Galson Sciences Limited.
- Signed
- 8 May 2026
- Value
- ceiling above
- Period
- 8 May 2026 – 31 Mar 2030
- Status
- active
4 agreed KPIs: Quality of Delivery · Timely Delivery · Delivery to Contract Price …
- Quality of Delivery
- Timely Delivery
- Delivery to Contract Price
- Effective Contract Management
ThermoChimie Phase 4 Framework - Lot 3 · Amentum Clean Energy LtdVCSE, Amphos 21 Consulting S.L., BRGM, National Nuclear Laboratory, SCK CEN
- Signed
- 8 May 2026
- Value
- ceiling above
- Period
- 8 May 2026 – 31 Mar 2030
- Status
- active
4 agreed KPIs: Effective Contract Management · Quality of Delivery · Timely Delivery …
- Effective Contract Management
- Quality of Delivery
- Timely Delivery
- Delivery to Contract Price
ThermoChimie Phase 4 Framework - Lot 4 · Amentum Clean Energy LtdVCSE, Amphos 21 Consulting S.L., BRGM, National Nuclear Laboratory
- Signed
- 8 May 2026
- Value
- ceiling above
- Period
- 8 May 2026 – 31 Mar 2030
- Status
- active
4 agreed KPIs: Effective Contract Management · Quality of Delivery · Timely Delivery …
- Effective Contract Management
- Quality of Delivery
- Timely Delivery
- Delivery to Contract Price
Bid statistics published by the authority
| Lot | Bids | SME | VCSE | Valid bid range |
|---|---|---|---|---|
| 1 · Secretariat (One Supplier - Direct Award) | 3final-stage tenders | 0 | 0 | — |
| 2 · Lot 2 - Database and Website Management / Maintenance (One Supplier - Direct Award) | 2final-stage tenders | 0 | 0 | — |
| 3 · Lot 3 - Desk Studies: Data Generation, Selection, Assessment and Verification… | 5final-stage tenders | 0 | 0 | — |
| 4 · Lot 4 - Experimental Studies: Data Generation, Model Verification (Multiple Suppliers,… | 5final-stage tenders | 0 | 0 | — |
Contracting authority & participating public bodies
Framework contractors & participating bidders
6 commercial parties on the notice- Amentum Clean Energy LimitedFramework contractor
- Amphos 21 Consulting S.L.Framework contractor
- BRGMFramework contractor
- Galson Sciences LimitedFramework contractor
- National Nuclear LaboratoryFramework contractor
- SCK CENFramework contractor
Official documents & specifications (12)
Official links; attachments are not copiedNotices published for this procedure
- Contract details notice Contract details notice on Find a Tender
- Contract details notice Contract details notice on Find a Tender
- Contract details notice Contract details notice on Find a Tender
- Contract details notice Contract details notice on Find a Tender
- Contract award notice Contract award notice on Find a Tender
- Contract award notice Contract award notice on Find a Tender
- Contract award notice Contract award notice on Find a Tender
- Contract award notice Contract award notice on Find a Tender
Show 4 more notices
- Tender notice Tender notice on Find a Tender
- Planned procurement notice Planned procurement notice on Find a Tender
- Preliminary market engagement notice Preliminary market engagement notice on Find a Tender
- Pipeline notice Pipeline notice on Find a Tender