State-owned electricity utility Eskom’s Koeberg nuclear power station was recently licensed to operate its Unit 1 for another 20 years, with global consultancy SRK Consulting South Africa playing a role in updating the site investigation reports – specifically the Site Safety Report (SSR) required by the National Nuclear Regulator (NNR). These studies were part of a range of updates undertaken by SRK, that need to be conducted every five to ten years, says SRK principal consultant Derry Holmes.