Office for Nuclear Regulation & Environment Agency

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Interim design acceptance - iDAC/iSoDA

In December 2011, ONR and the Environment Agency granted interim design acceptance to the AP1000 Reactor Design.

The Interim Design Acceptance Confirmations (iDAC) and interim Statements of Design Acceptability (iSoDA) were issued by the regulators following the completion of the the planned assessment of the safety, security and environmental cases proposed by Westinghouse. By issuing the interim documents, ONR and the Environment Agency confirm they are satisfied with how designers plan to resolve the 51 outstanding GDA Issues.

Having completed the planned assessment of the safety, security and environmental cases for the AP1000, the regulators published a series of Summary and technical Assessment Reports on their respective websites summarising the basis of their decision.