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Maritime PRPP Contract Details notice

Department for Energy Security & Net Zero · Contract details notice on Find a Tender

Tender information last checkedLast checked 4 Oct 2026, 00:33.

Opportunity overview

The Department for Energy Security and Net Zero has awarded a contract for the provision of a qualitative assessment of the proliferation resistance and physical protection (PRPP) characteristics of advanced reactor systems adapted for potential marine propulsion applications (hereafter “the Study”). This assessment builds on previous PRPP evaluations commissioned by the Client for land‑based Generation IV reactor systems; specifically, PWR, HTGR, LFR, SFR and MSR designs and will consider how PRPP outcomes may differ when such reactor types are adapted for deployment onboard maritime vessels. The Study will include the following: 1. Technology and Design Review • Review of the global marine reactor development landscape to identify which previously assessed land‑based reactor types have credible or emerging marine‑based variants. • Identification and description of design changes associated with marine deployment, including but not limited to: Core size and configuration Core materials Fuel enrichment levels Fuel form Spent fuel volumes and properties Refuelling approach and operational cycles 2. PRPP Scenario Review • Re‑examination of the three threat scenarios used in the previous PRPP assessments (one proliferation scenario and two physical protection scenarios). • Qualitative commentary on how scenario assessments and scoring ‘would change’ because of: Siting reactors onboard maritime vessels Design modifications identified in the technology and design review 3. High‑Level Assessment Output • Development of a high‑level, qualitative description of how PRPP measure scores might be adjusted should an expert workshop be reconvened. • The Study will ‘not’ re‑score the original PRPP measures in detail, as the intent is to inform future expert assessment rather than replace it.

Awarded to

Amounts belong to published awards or contracts. Where several suppliers share one value, it is labelled as shared and is not a supplier-specific allocation.

Classification

No classification was supplied.

Lots

  • Lot 1Value 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
Prj_6547
Status
complete
Procurement Method
direct
Procurement Method Details
Below threshold - without competition

Legal basis

Id
2023/54
Scheme
UKPGA

Lots and requirements

Entry 1
Id
1
Status
complete

Buyer, suppliers and contacts

Organisation 1
Name
Department for Energy Security & Net Zero
Id
GB-PPON-PDHQ-2163-WYMH

Identifier

Scheme
GB-PPON
Id
PDHQ-2163-WYMH

Address

Street Address
55 Whitehall
Locality
London
Postal Code
SW1A 2HP
Country
GB
Country Name
United Kingdom
Region
UKI32

Contact

Roles

buyer

Details

Classifications

Entry 1
Scheme
UK_CA_TYPE
Id
publicAuthorityCentralGovernment
Description
Public authority - central government
Organisation 2
Name
United Kingdom National Nuclear Laboratory Limited (UKNNL)
Id
GB-FTS-176652

Address

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

Contact

Roles

supplier

Details

Scale
large
Vcse
No

Award information

Award 1
Id
1
Status
active
Main Procurement Category
services

Items

Item 1
Id
1
Related Lot
1

Additional Classifications

Entry 1
Scheme
CPV
Id
71356000
Description
Technical services

Delivery locations

Entry 1
Region
UK
Country
GB
Country Name
United Kingdom

Suppliers

Supplier 1
Id
GB-FTS-176652
Name
United Kingdom National Nuclear Laboratory Limited (UKNNL)

Related lots

1

Contracts and changes

Entry 1
Id
1
Award ID
1
Status
active
Above Threshold
No
Date Signed
20 Feb 2026, 00:00

Period

Starts
20 Feb 2026, 00:00
Ends
31 Mar 2026, 23:59

Value

Including VAT
24,000
Amount
20,000
Currency
GBP

Documents

Entry 1
Id
021033-2026
Document Type
contractNotice
Notice Type
UK7
Description
Contract details notice on Find a Tender
Published
9 Mar 2026, 16:20
Format
text/html

Recorded locations

  • Buyer location · London · UKI32 · SW1A 2HP · United Kingdom

Notice and amendment history

1 published notice version reviewed by ProcuraAxis.

1 VERSION
  1. 021033-2026Contract details notice on Find a Tender ·