Defence Nuclear

KBR are leaders in nuclear defence expertise, supporting the UK’s current and future nuclear submarine and deterrent capabilities. Our record encompasses the delivery, assurance, and ongoing resilience of critical infrastructure, with a focus on safety, reliability, and continuous technological advancement.

Our work

NTSP – Clyde Infrastructure (KAD Consortium)

Client‑side programme and project delivery for critical naval infrastructure

• P3M, commercial, estimating, planning, controls and information management for high‑hazard upgrades at HMNB Clyde. • Delivered via KAD with a scalable nuclear workforce. • Framework supports wider Royal Navy and Defence nuclear infrastructure needs.

SSNA – submarine safety and environmental assurance

Coherent SEMS and early hazard design for future SSN‑A class

• 35+ years’ submarine safety domain knowledge applied to influence design and risk management. • Line‑of‑sight from policy to process across operational scenarios. • Supports safe entry‑into‑service and through‑life assurance.

Reactor technical authority support (Rolls‑Royce, CASP)

Design, assurance and in‑service support to submarine nuclear reactors

• Tier‑1 strategic partner under qualifying sub‑contract to RRSL’s Unity contract with MOD. • MBSE and systems engineering improve integration, traceability and technical planning. • Contributes to Continuous‑at‑Sea Deterrence (CASD).

Devonport & Clyde infrastructure support

Life‑extension, compliance and master planning across naval bases

• Addresses complex dock upgrades and asset life extensions with safety case advisory. • Master‑planning/optioneering for evolving operations, people and equipment flows. • Readiness for new dock systems and utilities modernisation.

Floating dry docks for Clyde – Programme Euston

Additional Fleet Time Docking Capability in support of CASD and UK CarrierStrike

• Comprises multiple Floating Docks and all associated Base Infrastructure works. • Definition of docking facilities and associated landside infrastructure. • Developing safety cases to enable deployment and operational use. • Supports availability and resilience of nuclear assets.

AWE Future Materials Campus (FMC) – Programme initiation

Unified KBR/Frazer‑Nash team delivering specialist nuclear programme support

• Supporting nuclear compliance, supporting the development of an assurance capability as well as operational readiness planning of this multi £BN capital programme.

Maintaining the UK’s continuous-at-sea deterrent

Contributing to submarine design, build and support

• Providing BAE Systems with embedded consultancy and specialist support across major submarine programmes • Develop and implement engineering processes that embed systems engineering into the design and build of next-generation submarines • Supporting transformation to a more consistent model-based systems engineering (MBSE) approach to improve design integration, requirements traceability, interface management and technical planning.

Sellafield Programme & Project Partners (PPP)

Integration partner for multi‑billion decommissioning portfolio

• Lot 1 Integration: EHSSQ, commercial/supply chain, programme controls, digital and people services. • Coordinates partners to improve certainty/performance, logistics and stakeholder management. • Long‑term alliance (2019–2039) with national impact.

Defence Nuclear Data Centre (DNDC)

Secure by Design information engineering for the SDA

• Incorporating AI techniques, PQC and information governance into technical procedures and portfolio services. • Embedded with Babcock to evolve the MOD computer estate under stringent security assurance. • Improves knowledge management and programme/project discipline.