Provision of Support on Operating Chemistry Choices for the GDA of UK ABWR

Tender description

BACKGROUND TO THE PROJECT 1) ONR is undertaking a phased Generic Design Assessment (GDA) of the Hitachi General Electric (Hitachi-GE) UK Advanced Boiling Water Reactor (UK ABWR). Hitachi-GE’s submissions to ONR are similarly phased, providing increasing detail and evidence as the design is finalised and the UK regulatory requirements are better understood. 2) Step 3 of GDA of the ABWR design commenced in September 2014. A key part of GDA is for ONR inspectors responsible for assessing the ABWR design to identify areas where timely input from Technical Support Contactors (TSCs) is required to enable GDA to progress to programme, and to ultimately inform ONR’s regulatory decision on the acceptability of the ABWR design, or otherwise, for construction in the UK. ONR have identified that one such area relates to the operating chemistry choice for the primary cooling system of UK ABWR.