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Welcome to the UK HPR1000, Generic Design Assessment (GDA) website

CGN and EDF, through their joint venture company General Nuclear System Limited (GNS), commenced the Generic Design Assessment (GDA) process for the UK HPR1000 in January 2017.

GNS has been established to act on behalf of the three joint requesting parties (CGN, EDF and General Nuclear International) to implement the Generic Design Assessment of the UK HPR1000 reactor; more information on the each of these companies and the structure of GNS can be found on the about us page. For practical purposes, GNS is referred to as the ‘UK HPR1000 GDA Requesting Party’.

This website has been set up to publish information on the HPR1000 nuclear reactor design that is currently undergoing assessment by the UK nuclear regulators – the Office for Nuclear Regulation and the Environment Agency. You can find out more information about the process on our GDA process page.

On 15 November 2018, the regulators concluded that the information submitted by GNS during Step 2 was sufficient to allow the start of Step 3. As part of the GDA process we continue to invite you to comment on the HPR1000 reactor design and the regulatory submissions that we make to the regulators.

Within this site you will find information on the HPR1000 reactor technology, design, safety and environmental features. You can also access the range of technical documents that will be submitted to the regulators throughout the process in our document library.