Most nuclear power plants originally had a nominal design lifetime of up to 40 years,but recent engineering assessments have established that many plants can operate up to 60 years.

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Many nuclear power plants were initially designed for a nominal operating life of about 40 years, but advancements in technology, better understanding of materials, and comprehensive engineering assessments have shown that many of these plants can safely extend their operation up to 60 years or more with proper maintenance and upgrades.

Most Nuclear Power Plants Originally Had a Nominal Design Lifetime