Unit 2 of the Koeberg nuclear power station in the Western Cape has been shut down for refueling after 492 days of uninterrupted operation. The refuelling process takes about two months. The unit has been running without major interruption since December 2015. Koeberg’s Unit 1 is still supplying 930 MW to the national grid. Every 15 to 18 months, each of the two units is shut down for refuelling, inspection and maintenance. Shut-downs are scheduled so as to avoid having both units out of service at the same time and to avoid the winter months in each year. During these routine shut-downs, one third of the used nuclear fuel is replaced with new fuel. Maintenance, plant modifications, inspections and statutory work to ensure that international safety standards continue to be met and that reliable plant performance continues, are performed.
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Source: EE plublishers