Nuclear
ROLLS-ROYCE AWARD SUPPLIER. JOSCAR APPROVED. GS3001 ACCREDITED. 30 YEARS SUPPLYING INTO SAFETY CRITICAL NUCLEAR PROGRAMMES.
Nuclear is a safety critical environment. Every component, every weld, every cut part carries a level of responsibility that demands more than standard manufacturing practice. HSM Engineering has been working to those standards for 30 years.
We are a Rolls-Royce Gold Award supplier, the highest level of supplier recognition in the Rolls-Royce performance framework. We are a make to print precision manufacturer, JOSCAR registered and fully approved to Rolls-Royce GS3001, the nuclear quality standard that governs supply into the UK’s submarine and civil nuclear programmes. Our accreditations, processes and documentation disciplines are built around the requirements of safety critical manufacture, not adapted from commercial practice.
Cost, quality, and delivery are a given. We invest in the relationship, knowing your components in detail, keeping you updated throughout production, and managing the full process from purchase order receipt through to FAIR. Our team is fully conversant with nuclear documentation pack requirements and we have two Conformance Release Inspector (CRI) stamp holders on staff, enabling us to self-release nuclear components to programme requirements.
Programmes
We supply precision components into the Astute class submarine programme and the Dreadnought programme, safety critical nuclear programmes requiring the highest standards of manufacture, traceability and documentation.
We have completed our initial SMR audit and are approved as a supplier to the Rolls-Royce SMR programme, positioning HSM for civil nuclear new build as that programme moves towards delivery.
We have also manufactured components for the Sellafield glovebox project, safety critical containment equipment used in nuclear decommissioning and materials handling. This work requires exacting standards of precision and full documentary traceability throughout manufacture.
Manufacturing Capability
Every nuclear component is manufactured and documented to the standards that safety critical programmes demand, ISO9001 & GS3001 Quality management, full traceability, and complete nuclear substantiation packages. Nothing leaves our facility without the documentation to prove it.
We are also an accredited cutting subcontractor to other nuclear manufacturers requiring compliant laser and waterjet cut parts.
Quality & Accreditations
Rolls-Royce Gold Award — highest level of Rolls-Royce supplier recognition.
GS3001 — Rolls-Royce nuclear quality standard, fully approved.
CRI — two Conformance Release Inspector stamp holders on staff.
JOSCAR registered — Joint Supply Chain Accreditation Register.
ISO 9001 — quality management system.
NADCAP — special process accreditation (laser welding and drilling).
BS EN ISO 3834 — welding quality management.
Cyber Essentials Plus — independently verified cyber security.
Full nuclear documentation pack capability — substantiation, traceability and FAIR as standard.
Customers
Rolls-Royce, Siemens Nuclear and Sellafield, supplying into safety critical nuclear programmes across defence, civil new build, and decommissioning. 30 years of continuous supply with no lapses in accreditation.
Why Choose Us?
We know your parts. We keep you informed. We deliver.
Engineers at the end of the phone
30 years of nuclear manufacturing experience. Talk to us directly about your requirements, your drawings, and your programme.
Quality driven
Rolls-Royce Gold Award supplier. GS3001, AS9100 Rev D, NADCAP and JOSCAR accredited. Two CRI stamp holders on staff. Full nuclear documentation packs and FAIR.
Why Choose Us?
If you are looking for a supplier that works with you to find manufacturing solutions throughout the entire product life cycle then that's what HSM Engineering Ltd do every day.
Engineers at the end of the phone
With decades of Engineering experience we can support your questions and help you with the most efficient method of manufacture.







