Before revision: Assuming there are 500 reactors in use in the world, the above numbers mean that, statistically, one core damage incident would be expected to occur somewhere in the world every 40 or 100 years , respectively .
After revision: Assuming there are 500 reactors in use in the world, the above CDF estimates mean that, statistically, one cyears for the 2003 European Commission estimated average accident rate or everye damage incident would be expected to occur somewhere in the world every 40 or 100 years for the 2008 Electric Power Research Institute estimated average accident rate .