From Eskom : On Monday, 21st July following a fault with the hydrogen cooling system in the Unit 2 generator at Koeberg, Eskom initiated a controlled shutdown of the unit (900 MW generating capacity) around 19h00. The nuclear reactor side of the unit has not been affected. Due to stringent safety requirements of the shutting down procedure, repairs and restarting procedure will take about three weeks to complete. Specialists from Alstom, the original equipment manufacturer, which recently undertook work on the generator, are already on site to assist with the inspection, diagnosis of the problem and the repair work that will be required.