Award

Decommissioning Nuclear Waste Partnership

SELLAFIELD LIMITED

This public procurement record has 1 release in its history.

Award

10 Nov 2025 at 09:02

Summary of the contracting process

Sellafield Ltd, a prominent player in nuclear site management, has awarded a significant contract titled "Decommissioning Nuclear Waste Partnership" under the selective procurement method using a restricted procedure above threshold. This initiative is part of the Decommissioning and Nuclear Waste Partners (DNWP) Framework aimed at tackling the challenges presented by Europe's largest nuclear site. The framework has brought together four partners under different Lots, covering diverse aspects of nuclear site management, including remediation, pond and silos retrievals, and integrated nuclear waste management. Based in Seascale, the contract period spans from 30th October 2025 to 30th October 2040, with a massive contract value of £4.6 billion. The award date was 30th October 2025, with a prior tender completion date set for 27th June 2024, highlighting a thorough procurement process by Sellafield Ltd.

This contract presents a vast arena of opportunities for large enterprises involved in engineering works, construction, consultancy, and waste management. With the comprehensive work scope covering engineering and construction activities, safety case designs, and waste management, businesses with expertise in these areas have the potential for significant growth through partnership and subcontracting opportunities. The opportunity is particularly suitable for those with a capacity to handle large-scale projects and a history of successful engagements in high-risk infrastructure environments. Although the opportunity may not suit SMEs, it provides a growth avenue for large enterprises looking to make a substantial impact in the nuclear decommissioning sector. The collaboration across various stages of the nuclear waste lifecycle also indicates extensive networking and partnership possibilities within the industry.

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Notice Title

Decommissioning Nuclear Waste Partnership

Notice Description

Sellafield Ltd is responsible for safely operating and decommissioning Europe's largest, most complex nuclear site, which is home to legacy nuclear facilities that are some of the most hazardous buildings in Western Europe. Sellafield Ltd, through the Decommissioning and Nuclear Waste Partners (DNWP) Framework opportunity, has brought together four partners across four Lots to provide a full suite of expertise and support to deliver decommissioning activities and projects, including asset care. Delivery will be across nuclear facilities on the Sellafield licenced site that are in mix of states including operational, post operation clean out (POCO), decommissioning and demolition. Consequently, the scope of work for the DNWP Framework will include construction delivery, demolition related works, associated technical services (including safety case and design) and waste management with the scope aligned across the following four Lots: Lot 1 Remediation Partners Lot 2 Pond Retrievals Partner Lot 3 Silos Retrievals Partner Lot 4 Integrated Nuclear Waste Partner Lot 1 will consist of two Remediation Partners. Remediation is about cleaning up the Sellafield site over the next century as safely and cost-effectively as possible. As an asset reaches the end of its operational life, remediation addresses the nuclear, radiological and conventional risks through post-operation clean-out, decommissioning, demolition and land remediation. Lot 2 will consist of a Ponds Partner, encompassing both the First Generation Magnox Storage Pond ("FGMSP") , associated buildings and the Pile Fuel Storage Pond ("PFSP"). and associated buildings. Legacy Ponds is the Operating Unit (OU) organisation within the Retrievals value stream of Sellafield that is charged with managing the programmes of work for the FGMSP and the PFSP. These are two legacy nuclear storage ponds that retain significant radiological materials and hazards that require timely mitigation, principally by retrieving the materials to downstream treatment and storage/disposal facilities while maintaining a safe and secure environment. Lot 3 will consist of a Silos Partner, encompassing both the Magnox Swarf Storage Silo ("MSSS") and Pile Fuel Cladding Silo ("PFCS"). The Retrievals value stream is responsible for managing the site's major hazard and risk reduction programme: retrieving the waste from Sellafield's four highest risk legacy storage facilities. Lot 4 will consist of a single enterprise-wide Integrated Nuclear Waste Partner. This Nuclear Waste Partner will work through the Waste Operating Unit ("Waste OU"). The Waste OU is part of the Remediation Portfolio, it includes a dedicated programme providing enabling activities across the Sellafield enterprise with major customers being the DNWP Remediation & Retrievals Partners.

Publication & Lifecycle

Open Contracting ID
ocds-b5fd17-a4d8dd6b-a51d-430d-89f1-8a04c1fac9fb
Publication Source
Contracts Finder
Latest Notice
https://www.contractsfinder.service.gov.uk/Notice/6d4229ba-fc62-49f3-a066-5a41982c23bf
Current Stage
Award
All Stages
Award

Procurement Classification

Notice Type
Award Notice
Procurement Type
Standard
Procurement Category
Works
Procurement Method
Selective
Procurement Method Details
Restricted procedure (above threshold)
Tender Suitability
Not specified
Awardee Scale
Large

Common Procurement Vocabulary (CPV)

CPV Divisions

22 - Printed matter and related products

42 - Industrial machinery

43 - Machinery for mining, quarrying, construction equipment

44 - Construction structures and materials; auxiliary products to construction (except electric apparatus)

45 - Construction work

71 - Architectural, construction, engineering and inspection services

79 - Business services: law, marketing, consulting, recruitment, printing and security

98 - Other community, social and personal services


CPV Codes

22314000 - Designs

42000000 - Industrial machinery

43320000 - Construction equipment

44421722 - Safety cases

45000000 - Construction work

45100000 - Site preparation work

45111000 - Demolition, site preparation and clearance work

45111200 - Site preparation and clearance work

45111213 - Site-clearance work

45210000 - Building construction work

45220000 - Engineering works and construction works

45222110 - Waste disposal site construction work

45315100 - Electrical engineering installation works

45351000 - Mechanical engineering installation works

71320000 - Engineering design services

71321000 - Engineering design services for mechanical and electrical installations for buildings

71322000 - Engineering design services for the construction of civil engineering works

71530000 - Construction consultancy services

79400000 - Business and management consultancy and related services

79410000 - Business and management consultancy services

79415200 - Design consultancy services

79723000 - Waste analysis services

79933000 - Design support services

98391000 - Decommissioning services

Notice Value(s)

Tender Value
£4,600,000,000 £1B-£10B
Lots Value
Not specified
Awards Value
£4,600,000,000 £1B-£10B
Contracts Value
Not specified

Notice Dates

Publication Date
10 Nov 20253 months ago
Submission Deadline
27 Jun 2024Expired
Future Notice Date
Not specified
Award Date
30 Oct 20253 months ago
Contract Period
30 Oct 2025 - 30 Oct 2040 Over 5 years
Recurrence
Not specified

Notice Status

Tender Status
Complete
Lots Status
Not Specified
Awards Status
Active
Contracts Status
Not Specified

Contracting Authority (Buyer)

Main Buyer
SELLAFIELD LIMITED
Contact Name
Michelle Edmondson
Contact Email
michelle.a.edmondson@sellafieldsites.com
Contact Phone
Not specified

Buyer Location

Locality
SEASCALE
Postcode
CA20 1PG
Post Town
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
4
Supplier Names

A2R (ALTRAD SUPPORT SERVICES LIMITED AND ATKINSRÉALIS UK LI

AMENTUM CLEAN ENERGY

NDS (ALTRAD SUPPORT SERVICES LTD, CAVENDISH NUCLEAR LTD, SHEPLEY

TDA (ATKINSRÉALIS UK, AMENTUM CLEAN ENERGY, WESTINGHOUSE EL

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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