Nuclear

Nuclear project delivery

Intermarine UK delivers its specialist nuclear capability through Interweld Nuclear Services Ltd, an ISO 19443-certified joint venture with Allweld Nuclear & Industrial. Together, we support nuclear construction, manufacturing and maintenance programmes across the UK and Europe.

specialist expertise

Supporting nuclear new build and maintenance programmes

Interweld Nuclear Services combines Intermarine UK’s workforce mobilisation and project-delivery capability with Allweld Nuclear & Industrial’s experience in nuclear manufacturing, maintenance and quality assurance.

We provide nuclear-qualified trades and technical personnel for construction, plant upgrades, factory-based manufacturing and maintenance programmes. Our capability covers welding and fabrication, pipework, mechanical and electrical installation, decontamination and decommissioning.

Alongside site-based support, we deliver scoped manufacturing packages and supply welding consumables, specialist equipment and heat-treatment services.

Every project operates within an ISO 19443-certified quality management system, supporting traceability, nuclear safety culture and supply-chain assurance.

our capabilities

Proven delivery capability

Project management

We manage and deliver work packages from small interventions to full programmes. Welding and fabrication, pipework, mechanical overhauls, electrical installation, heat treatment and training services

Nuclear-grade materials

We supply components and consumables fully aligned to ASME NQA-1, IAEA GSR Part 2 and Framatome QN-100, including Level 1, 2 and 3 components, consumables and PPE.

Quality assurance

Our ISO 19443 certification underpins quality management systems across the industry supply chain, ensuring the highest levels of safety and reliability.

Connecting global expertise to critical project demands

With access to a global network of qualified and experienced personnel, we are well positioned to support resourcing requirements across civil nuclear new build and maintenance programmes.

All candidates are rigorously vetted, holding the required engineering or technical qualifications alongside relevant certifications. We offer both contract and permanent solutions, with strict processes in place to verify security clearances.

We manage the full mobilisation and coordination of personnel across key disciplines, including:

Welders
Pipefitters
Mechanical and electrical trades
Riggers
Safety teams and radiation protection advisors
Operators and project/commercial managers
Project management

Let’s talk

Supporting nuclear project delivery

Partner with a team that understands industry standards, reduces delivery risk and provides certified personnel ready to perform