Q4 2011 GDA report

This is the latest routine quarterly report on the progress of Generic Design Assessment (GDA) of the AP1000® and UK EPR™ reactors. It follows the issuing of interim design acceptance by ONR and the Environment Agency in December 2011.

 This last quarter has been one of the most significant in the GDA programme as we completed Step 4 and thus completed our planned assessment of the generic safety cases for the AP1000® and UK EPR™ reactors. On the basis of our findings we decided to grant an interim Design Acceptance Confirmation (DAC) and interim Statement of Design Acceptability (SoDA) to the designers of each of the reactors.

This key milestone marks the culmination of four years of work by the Office for Nuclear Regulation and the Environment Agency, during which our specialists have examined thousands of documents, and EDF and AREVA, and Westinghouse have worked hard to respond to the many technical questions we raised. As a result, we have been able to accept many aspects of the generic safety, security and environment cases.

Focus will now shift towards those issues that need to be resolved before we will be in a position to consider granting a final DAC or final SoDA. Currently this work targets the UK EPR™ as Westinghouse is not presently addressing the GDA Issues for the AP1000®. This is the first routine quarterly progress report that describes how this GDA close-out work is proceeding and we have introduced new metrics to help illustrate both our and EDF and AREVA’s progress on resolving the remaining GDA Issues for the UK EPR™.

If Westinghouse secures a UK customer and begins work with us to resolve its GDA Issues we will remobilise our resources and introduce similar metrics to help track progress.

Successful completion of Step 4, and publication of our reports and the GDA Issues that remain, has reinforced our confidence that GDA is proving to be an effective, efficient and internationally unique process for examining the safety, security and environmental protection aspects of new reactors well in advance of their construction in this country.

You can read the full report here.