Nuclear Decommissioning — ONR Regulation, Contamination Control and H-Class Extraction for Nuclear Sites

The UK nuclear decommissioning programme is managed by the Nuclear Decommissioning Authority (NDA) and regulated by the Office for Nuclear Regulation (ONR). The NDA is responsible for the decommissioning of 17 civil nuclear legacy sites across the UK -- including Sellafield (Cumbria), Dounreay (Caithness), Harwell (Oxfordshire), Windscale and others. Cleaning and decontamination are central activities in nuclear decommissioning -- removing radioactive contamination from surfaces, structures and equipment is a core element of the decommissioning process. The contamination control requirements in nuclear decommissioning go significantly beyond standard industrial cleaning compliance, but the foundation equipment -- HEPA filtration, sealed vacuum systems, contamination containment -- is the same H-Class technology that V-TUF supplies for construction, healthcare and mould remediation applications.

Nuclear site work requires site-specific authorisation, radiological competency and compliance with ONR licence conditions. This page covers the regulatory framework and the cleaning equipment context for nuclear decommissioning. V-TUF supplies vacuum equipment to nuclear decommissioning supply chain contractors for non-radiologically-controlled applications on nuclear sites -- general industrial cleaning, site facilities, vehicle cleaning and general support activities.

The regulatory framework

Office for Nuclear Regulation (ONR)

ONR regulates nuclear safety, security, transport and safeguards across the UK civil nuclear industry under the Energy Act 2013 and the Nuclear Installations Act 1965. Nuclear licensed sites operate under a nuclear site licence that sets out licence conditions covering all aspects of site operation including decommissioning, contamination control and waste management. ONR inspectors have wide enforcement powers and nuclear safety non-compliances can result in site shutdown.

Ionising Radiations Regulations 2017 (IRR17)

IRR17 replaced the Ionising Radiations Regulations 1999 and is the primary radiation protection legislation for work with ionising radiation in the UK. It requires classification of workers into supervised and controlled areas, dose limits, personal dosimetry, local rules, radiation protection supervisors and radiation protection advisers. Cleaning operatives working in controlled or supervised areas of nuclear sites are subject to IRR17 requirements in addition to standard health and safety legislation.

Radioactive Substances Act and Environmental Permitting

Radioactive waste from decommissioning is regulated by the Environment Agency in England and SEPA in Scotland under environmental permitting frameworks. Contaminated cleaning waste -- dust, filters, wipes -- may be classified as radioactive waste and must be managed accordingly.

H-Class extraction in nuclear decommissioning

H-Class vacuum extraction with H14 HEPA filtration and sealed Type H disposal is the standard for vacuum cleaning in areas where radioactive particulate contamination may be present. The H14 HEPA filter captures 99.995% of particles at 0.3 microns -- the same filtration standard required for asbestos, mould and clinical environments, but deployed here to prevent radiological contamination from being re-released into the working environment during vacuuming.

In radiologically-controlled areas, the vacuum equipment itself may become contaminated during use and must be managed as potentially contaminated equipment -- including decontamination procedures before removal from the controlled area and management as radioactive waste if contamination cannot be removed. This is a site-specific requirement governed by the nuclear site licence conditions and local rules.

For non-controlled areas of nuclear sites -- car parks, access roads, general facilities, offices, welfare facilities -- standard industrial cleaning equipment is appropriate. H-Class extraction is the specification for dusty maintenance work in non-controlled areas of nuclear sites for the same COSHH and CDM reasons as any other industrial site. See: H-Class extraction hub

Nuclear decommissioning sites in the UK

NDA nuclear sites are located across the UK including Sellafield and Windscale (Cumbria), Dounreay (Caithness, Scotland), Harwell and Culham (Oxfordshire), Chapelcross (Dumfries), Berkeley and Oldbury (Gloucestershire), Bradwell (Essex), Dungeness (Kent), Hinkley Point A (Somerset), Hunterston A (Ayrshire), Sizewell A (Suffolk), Trawsfynydd (Gwynedd) and others. V-TUF holds UK warehouse stock with next-day delivery to site locations across the UK including Cumbria (CA postcodes) for Sellafield supply chain.

Related legislation and compliance

COSHH Regulations 2002 | H-Class extraction | DSEAR and ATEX | Confined Spaces Regulations 1997 | PUWER 1998

Related sector pages

Utilities and energy hub | Manufacturing hub | Public sector procurement

Trade accounts for nuclear supply chain contractors

V-TUF supplies H-Class extraction equipment and industrial vacuums to NDA supply chain contractors and nuclear licensed site operators for general site cleaning and non-radiological applications. Trade account terms available.

Telephone: 01522 787978. Email through the contact page.