Broad Range of Experience
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The use of Extended Completion Times for online maintenance or repair adversely affects Maintenance Rule and Mitigating System Performance Index performance criteria. However, moving maintenance or repair from a Refueling Outage Scope potentially reduces the scope and cost of a refueling outage. Extending the Surveillance Test Intervals potentially allows less testing during a refueling outage (scope and cost) and less dose accumulation at power, but STI extension evaluations can be expensive. Particularly with our out-sourcing and co-sourcing partners, Westinghouse works with many U.S. utilities to develop strategies or priorities for adopting a specific risk-informed application, and develop strategies or priorities for using the allowances provided by the risk-informed applications, including quantifying the plant-specific trade-offs, such that senior management can make decisions aligned with plant objectives.