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Maritime PRPP Contract Details notice

DEPARTMENT FOR ENERGY SECURITY & NET ZERO

This public procurement record has 1 release in its history.

Award

09 Mar 2026 at 16:20

UK7 - Contract Details Notice
Summary of the contracting process

The Department for Energy Security & Net Zero, based in London, has awarded a contract titled "Maritime PRPP Contract Details notice." This falls under the industry category of technical services and is primarily concerned with providing a qualitative assessment of proliferation resistance and physical protection characteristics for advanced reactor systems in marine propulsion applications. The contracting process reached the award stage as of 9th March 2026, with the contract active from 20th February 2026 to 31st March 2026. Conducted under a direct procurement method and classified as below the threshold without competition, the contract was executed by the United Kingdom National Nuclear Laboratory Limited (UKNNL), headquartered in Warrington.

This procurement presents opportunities specifically for businesses specialising in technical services related to nuclear technology and assessments. Large-scale enterprises with expertise in reactor systems and maritime applications would find this tender particularly relevant. The contract, valued at £20,000 plus VAT, focuses on integrating previous land-based PRPP evaluations for marine applications, thereby providing a unique niche for growth in maritime propulsion systems. Enterprises keen on expanding their niche in advanced reactor systems and qualitative assessments can leverage this opportunity to establish or deepen their expertise in the burgeoning area of marine nuclear applications.

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Notice Information

Notice Title

Maritime PRPP Contract Details notice

Notice Description

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.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-h6vhtk-0665a5
Publication Source
Find A Tender Service
Latest Notice
https://www.find-tender.service.gov.uk/Notice/021033-2026
Current Stage
Award
All Stages
Award

Procurement Classification

Notice Type
UK7 - Contract Details Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Direct
Procurement Method Details
Below threshold - without competition
Tender Suitability
Not specified
Awardee Scale
Large

Common Procurement Vocabulary (CPV)

CPV Divisions

71 - Architectural, construction, engineering and inspection services

CPV Codes

71356000 - Technical services

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
£20,000 Under £100K

Notice Dates

Publication Date
9 Mar 20265 days ago
Submission Deadline
Not specified
Future Notice Date
Not specified
Award Date
20 Feb 20263 weeks ago
Contract Period
20 Feb 2026 - 31 Mar 2026 1-6 months
Recurrence
Not specified

Notice Status

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

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
DEPARTMENT FOR ENERGY SECURITY & NET ZERO
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
SW1A 2HP
Post Town
South West London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI35 Westminster and City of London
Delivery Location
Not specified
Local Authority
Westminster
Electoral Ward
St James's
Westminster Constituency
Cities of London and Westminster

Supplier Information

Number of Suppliers
1
Supplier Name

UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED (UKNNL

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

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