Office for Nuclear Regulation

Sellafield, Decommissioning, Fuel and Waste

Our Sellafield, Decommissioning, Fuel and Waste (SDFW) team is responsible for the regulation of 20 nuclear licensed sites including Sellafield, all GB decommissioning sites, fuel cycle facilities, waste management facilities and nuclear research sites.

Sellafield is the largest nuclear site in Europe and, with over 1000 nuclear facilities on site, ranks as one of the most complex in the world. Today Sellafield is home to a wide range of operations including the decommissioning of redundant buildings from the early days of the UK nuclear programme, used fuel management including reprocessing, and the safe management and storage of nuclear waste. Reducing the hazard and risk on the Sellafield site quickly and safely is both a national priority and a top regulatory priority for ONR.

The SDFW team also regulates a further 20 nuclear licensed sites, more than 50% of the total licensed by ONR, and leads in Nuclear Liabilities Regulation including geological disposal, engagement with the Nuclear Decommissioning Authority and providing strategic advice to government.


Sellafield - First Generation Magnox Storage Pond 2015 (Copyright Sellafield Ltd)

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Decommissioning, Fuel and Waste

Dounreay - redundant underground pipes are decommissioned (Copyright DRSL and NDA)

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