National Security and Nuclear Deterrence

Amentum is a global leader in nuclear deterrence, nuclear defense, and the safety, security, and operations of nuclear assets. We provide critical support to nuclear deterrence operations, defense, intelligence, and homeland security missions for governments and allies worldwide. Through advanced technology integration, national security engineering, design expertise, and operational excellence, we strengthen global stability and safeguard the assets that matter most.

Amentum is a trusted partner in supporting nuclear security and deterrence, providing engineering, sustainment, logistics, program management, research and development, and operations across nuclear weapons systems, delivery platforms, and command and control infrastructure. Our nuclear-experienced workforce supports the modernization and sustainment of the nuclear triad, as well as nonproliferation programs that prevent the spread of nuclear materials and technology. We bring deep technical expertise and security clearances required to work on the most sensitive nuclear programs-delivering reliable, high-quality support that underpins the credibility of the U.S. and its allies nuclear deterrent.

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Savannah River Site: Nuclear Design, Defense & Deterrence
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Design Engineering

Amentum is a specialist nuclear facility design contractor, delivering expert nuclear plant design and nuclear power design for the most technically challenging, high-hazard, and highly regulated projects in the government and commercial sectors.

Our nuclear engineering services combine innovation and precision to exceed the demands of energy and national security programs – from the design of nuclear power plants through to complex infrastructure for defense applications.

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Nuclear Safety

Amentum has a proven track record in nuclear safety management across highly regulated government and commercial environments.

We address nuclear energy safety concerns head-on through rigorous nuclear safety inspection regimes, robust nuclear regulatory compliance frameworks, and proactive nuclear risk mitigation strategies. Our unwavering commitment to nuclear plant safety and nuclear energy safety protects people, the environment, and mission-critical assets – without compromise.

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Construction & Project Management

As a trusted nuclear EPC contractor and nuclear construction management specialist, Amentum delivers world-class nuclear power plant construction, nuclear plant construction, and nuclear reactor construction services.

Our expert nuclear project management teams apply proven methodologies and cutting-edge technologies to ensure every mission-critical project is delivered on time, within budget, and to the highest nuclear quality standards.

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Nuclear Operations

Amentum delivers expert nuclear operations support across a diverse range of applications – from nuclear power reactor operator services and nuclear site operations through to nuclear decommissioning services and long-term nuclear asset management.

Our experienced nuclear operators combine deep engineering expertise with rigorous nuclear facility management to meet the most demanding challenges in energy, defense, and national security.

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Supply Chain

Amentum is a trusted partner for nuclear supply chain management across the full nuclear lifecycle.

From nuclear procurement services and nuclear materials supply chain oversight to nuclear supply chain inspection and nuclear fuel services security, our solutions are built to minimize risk, optimize processes, and ensure the seamless delivery of resources that sustain dynamic nuclear operations.

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Research & Development

As a leading nuclear R&D contractor, Amentum’s technical expertise is underpinned by extensive nuclear laboratory services, nuclear research, and development facilities across the UK, Europe, and North America.

We deliver a comprehensive range of nuclear testing services, analysis, and bespoke engineering solutions for the nuclear, aerospace, and advanced energy sectors – including specialized defense nuclear research capabilities that support national security and deterrence programs.

UK & Allied Deterrence

Amentum plays a critical role in supporting the UK’s nuclear deterrent and the naval nuclear propulsion programs that underpin it. Our naval deterrent sustainment capabilities span every site crucial to the British nuclear deterrent – providing the engineering, operational, and safety expertise that keeps the UK’s independent deterrent operational and mission-ready.

Nuclear Security

From nuclear power plant security and nuclear site security to nuclear threat assessment and nuclear counterterrorism support, Amentum’s integrated security services protect the people, assets, and infrastructure that national deterrence depends on.

Featured Projects

Remediating High-Level Radioactive Liquid Waste at the Savannah River Site (SRS)

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Naval Nuclear Propulsion

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Supporting Our Nation’s Weapons Defense System with Advanced Conduct of Operations and Best-in-Class Operational Readiness at Los Alamos National Laboratory (LANL)

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