United Kingdom
Amentum combines programme, project and engineering experience with deep technical capabilities to solve complex challenges for major UK organisations in the energy and defence sectors.
Amentum is a strategic partner for the UK’s nuclear new build program. We are delivery partner for programme, project and construction management services at Hinkley Point C and sole program and project management delivery partner at Sizewell C.
We also support the UK’s existing nuclear power stations under a Lifetime Enterprise Agreement with EDF.
Amentum is a leader in reactor technology, conceptual design and engineering relating to new nuclear technologies including Generation IV advanced reactors, fusion and small modular reactors (SMRs).
We have a decades-long involvement in fusion power research as a supplier to the UK Atomic Energy Authority and ITER, the world’s largest nuclear fusion project, where our work ranges from designing prototypes for key components to complex remote handling systems essential for reactor operations.
The company is a major supplier of engineering design, safety case and project management services at the UK’s nuclear decommissioning sites including Sellafield, where we are engineering design partner for the Programme and Project Partners, a 20-year contract to deliver a pipeline of major infrastructure projects.
Amentum operates the country’s largest private sector complex of nuclear laboratories and engineering test facilities in Warrington, where we can draw on the deep technical knowledge of more than 700 highly qualified specialists.
In the defence sector, Amentum has an essential role in the UK’s continuous at-sea deterrent by providing independent safety and technical advice and research and technology services for the Royal Navy’s nuclear submarines. It also supports naval infrastructure and shipbuilding; assists Defence Equipment & Support with procurement and operational delivery across the whole of the UK Ministry of Defence; and serves the Atomic Weapons Establishment as programme integration partner and non-nuclear engineering partner.
We work with our clients, partners and communities to safely and cost-effectively deliver the right solutions. We’ve earned our customers’ trust to successfully manage and execute the most complex programmes of scale and provide them with solutions they need for an unpredictable world.
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Our Capabilities
Complex Programme Management
Amentum has demonstrable expertise delivering complex programme and project management for UK Government major projects and infrastructure.
Feature Project: Management & Operation of Sellafield Ltd, UK | Amentum
Infrastructure Delivery Partner
We safely operate facilities of national significance, injecting innovation that increases efficiency and effectiveness.
We understand the need to view projects wholistically – build, secure, operate, and integrate.
Feature Project: Construction of Low-Level Waste Vaults at Dounreay | Amentum
Nuclear Operations
Amentum UK possesses an innate knowledge of the UK’s national nuclear landscape, having been involved in the design and delivery of much of the UK Government’s nuclear waste strategy.
Feature Project: Decommissioning Plutonium Contaminated Material Facilities at the LLWR, UK | Amentum
Facility Sustainment & Modernisation
Amentum leverages industry-leading expertise, processes, and technology to ensure the availability and reliability of our government and commercial clients’ vital equipment. Our innovative technology solutions, repeatable processes, and expertise ensure operational readiness and extend the life of facilities and equipment.
Feature Project: Management & Operations of LLW Repository Ltd (LLWR), UK | Amentum
Engineering Management, Licensing & Commissioning
As majority partner responsible for the management and operation of the Low Level Waste Repository (LLWR) in the UK, Amentum resolved an urgent need to expand waste disposal capacity, avoiding delays to UK’s decommissioning activity.
Sourcing an alternative LLWR site would have been a lengthy process with an expected cost of over £2 billion.
Amentum’s strategy involved fostering a collaborative approach with the customer and regulator, ultimately delivering upgrades to existing facilities and construction of an additional vault to extend the facilities operational life by 100 years.
In addition Amentum provided an additional 10 waste disposal and treatment routes, which avoided a further £455m in disposal costs.
Feature Project: Management & Operations of LLW Repository Ltd (LLWR), UK | Amentum
Decommissioning
Amentum has successfully decontaminated and decommissioned large scale, contaminated facilities. Our collaborative approach focuses on safe and accelerated delivery schedules based on lessons learned and continuous improvement. We are able to challenge existing processes to deliver improvements for our customers.
Feature Project: Management & Operations of LLW Repository Ltd (LLWR), UK | Amentum
Defence
We are working across all the key sites that enable the UK’s continuous-at-sea deterrent (CASD) program, including HMNB Clyde, home base for the Royal Navy’s operational submarines; HMNB Devonport, the largest naval base in Western Europe, BAE Systems Maritime in Barrow-in-Furness, where the Royal Navy’s submarines are built, at Rolls-Royce Nuclear in Derby, where submarine reactors are manufactured, and the Atomic Weapons Establishment in Berkshire, which is responsible for nuclear warhead design and manufacturing.
Amentum employs more than 350 multi-disciplinary engineers and project delivery professionals supporting the submarines which deliver Operation Relentless, the longest-running military operation in the history of the Ministry of Defence.
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We specialize in the design, construction, commissioning, and operations of innovative solutions for the world’s most complex challenges. We’re positioned to deliver hydrogen technology through a series of demonstration projects to achieve a secure, resilient, and clean energy source by 2030. We’re eager to partner with you to build a clean, resilient, secure energy future.
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