Regulators issue interim DAC and interim SoDA

Generic designs for two nuclear reactors proposed for construction in the UK have been granted interim design acceptance by the independent nuclear safety, security and environment regulators.

14 December 2011
Regulators mark end of planned assessment
iDACs and iSoDAs issued for each reactor design
Assessment reports published

Generic designs for two nuclear reactors proposed for construction in the UK have been granted interim design acceptance by the independent nuclear safety, security and environment regulators.

The Office for Nuclear Regulation and the Environment Agency confirmed they are satisfied with how the designers of both EDF and Areva’s UK EPRTM and Westinghouse’s AP1000® reactors plan to resolve a number of remaining issues.

Neither reactor can be built in the UK until these issues are resolved.

For both designs, the Office for Nuclear Regulation has issued interim Design Acceptance Confirmations (iDAC) and the Environment Agency has issued interim Statements of Design Acceptability (iSoDA).

Having completed the planned assessment of the safety cases for the generic designs, the regulators have today published reports on their respective websites, for each design summarising the basis of their decision, together with their technical assessment reports. They have also published documents explaining how the designers plan to resolve issues identified in a report written by the UK’s chief inspector of nuclear installations, Mike Weightman, on the Fukushima accident.
 

Further information from the Environment Agency
The Environment Agency is content with the environmental aspects of both designs and has issued interim Statements of Design Acceptability. It has specified two GDA Issues for the companies to address before the Environment Agency would be prepared to consider issuing a final Statement of Design Acceptability.

To explain how it has reached its decisions, the Environment Agency has published two decision documents setting out and explaining the decisions and responding to the issues raised during the consultations in 2010. These decision documents also summarise the final assessment reports. There are 14 final assessment reports for each design. Topics covered include radioactive waste, spent fuel, monitoring of radioactive disposals and management systems.

You can read the relevant documents here.