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Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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DOE announces NEPA exclusion for advanced reactors
The Department of Energy has announced that it is establishing a categorical exclusion for the application of National Environmental Policy Act (NEPA) procedures to the authorization, siting, construction, operation, reauthorization, and decommissioning of advanced nuclear reactors.
According to the DOE, this significant change, which goes into effect today, “is based on the experience of DOE and other federal agencies, current technologies, regulatory requirements, and accepted industry practice.”
Educational Session|Panel|Cost Reduction Opportunities
Tuesday, August 9, 2022|1:30–3:00PM EDT|Calusa 10
Knowledge Manager:
Matthew Mairinger (OPG)
Refueling and Maintenance Outage Costs have a remarkably wide range over the past couple of decades. The industry overall has improved from 100+ day outages to less than 20 days. More recently, most successful outages are in the high 20’s and low 30's in terms of days duration. We will analyze, evaluate and discuss motivating factors to changes in outage duration over time and potential consequences of those decisions. Macro approaches to changing durations will be discussed as well as specific process and technology improvements to improving outage durations.
Recommendations for the future direction of outage durations will be considered by the panel and session attendees.
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Session Notes
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