Except Koeberg was built by the French (and they have nuclear reactors on practically every street corner it seems) whereas 3 Mile was built by americans (and we all know what they prefer to use nuclear power for.)Koeberg is of the same type as Three Mile Island...
I doubt if anyone would like to hear of a major problem - a nuclear disaster is a real disaster.
Any safety officer in industry will tell you that when the minor incidents start to increase, the more serious ones will follow.
All these minor incidents at Koeberg is building up to a massive increased risk of a catastrophe.
Would think this 6% issue is to do with the new (refurbished) turbine (well we thought we could fit it in there somehow) - perhaps it is missing a bolt?