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Diablo Canyon Defers Millions Of Dollars Of Maintenance - Nuclear Energy Info

The curve is a graph of failure rate according to age. The failure rate is relatively high in the beginning when kinks are being worked out; it flattens out during the middle life phase; and it rises again sharply in the end-of-life or at the wear-out phase. On average, 20 years usually marks the beginning of the wear-out phase. Diablo Canyon is in the wear-out phase of the bathtub curve.