Annual outages completed at Olkiluoto
The annual outages of Olkiluoto were completed on Friday, 10 June at 04:08 when the Olkiluoto 1 plant unit (OL1) was connected back to the national grid. The annual outages lasted for a total of six weeks.The annual outage for OL1 started on 8 May. In addition to refuelling, preventive maintenance activities and inspections, the most significant work packages included, for example, the replacement of pumps and valves in the shutdown cooling system, renewal of electrical bushing assemblies in containment, inspection of the reactor pressure vessel bottom, maintenance activities in the service