Office for Nuclear Regulation

Category: Westinghouse

New GDA guidance for Requesting Parties

October 29, 2019 - Generic Design Assessment (GDA) guidance published


Design acceptance for the AP1000® reactor

March 30, 2017 - Regulators give design acceptance


Assessment of new reactors – progress update

March 21, 2017 - Progress report for the period November 2016 – January 2017


Generic Design Assessment quarterly update

July 12, 2016 - GDA quarterly update


AP1000: GDA issues and resolution plans

June 30, 2016 -


Generic Design Assessment quarterly update

March 21, 2016 - Assessment of new nuclear power station designs


GDA: Progress report for the period January 2015 to March 2015

May 21, 2015 -


Revised resolution plans for Westinghouse AP1000 design published

March 12, 2015 - The Office for Nuclear Regulation (ONR) and the Environment Agency have today published revised resolution plans in response to 51 outstanding GDA Issues for the AP1000 reactor design. The Westinghouse AP1000 reactor design re-entered the GDA process in June 2014 and following a period of remobilisation, technical assessment work commenced in January 2015. We have […]


New reactors progress report Q3 2014

November 6, 2014 - This report provides information on the work that we have been carrying out on the Generic Design Assessment (GDA) of Hitachi-GE’s UK Advanced Boiling Water Reactor (UK ABWR), and the re-mobilisation of the GDA project for the Westinghouse AP1000® reactor design, during the period July – September 2014.