{"slug":"nrc-nuclear-scrams","title":"Scram Status and Trends Since 2011","description":"Records of emergency shutdowns (scrams) at U.S. commercial nuclear power reactors since 2011, tracking scram frequency and cumulative status at each operating plant. Published by the Nuclear Regulatory Commission.","publisher":"Nuclear Regulatory Commission","organization_title":"Nuclear Regulatory Commission","landing_page":"https://www.nrc.gov/cdn/legacy/reactors/operating/dataset/scram-event-notifications.xlsx","file_count":1,"use_cases":[{"title":"Assess nuclear facility safety record","example":"An insurance underwriter evaluating a nuclear plant finds 7 automatic scrams in the past 2 years, well above the fleet average of 0.4 per reactor-year.","how":"Filter by plant name and date range. Count scrams per reactor and compare against the NRC fleet average to identify outlier facilities.","risk":true},{"title":"Due diligence on energy infrastructure","example":"A private equity firm considering an investment in a utility company discovers that one of its plants had 3 manual scrams in 6 months, suggesting operator-initiated safety interventions.","how":"Filter by site and trigger type. Manual scrams indicate situations serious enough for operators to intervene, which may signal deeper issues.","risk":true},{"title":"Compare reactor type reliability","example":"A researcher finds that BWR (boiling water) reactors had a 40% higher scram rate than PWR (pressurized water) reactors over the past decade.","how":"Group scrams by reactor type (PWR vs BWR) and normalize by reactor count. Track trends over time to identify whether the gap is widening or closing.","risk":false},{"title":"Cross-reference with event notifications","example":"A journalist investigating a reactor incident matches a scram record to its NRC Event Notification, revealing that the shutdown was triggered by a coolant leak that wasn't publicly disclosed for 48 hours.","how":"Use the Event Notification Number field to link scrams to detailed NRC event reports. Retracted flags indicate events later reclassified.","risk":false}],"enrichment":{"jurisdiction_names":["United States"],"jurisdiction_levels":["federal"],"date_range":{"start":"2011"},"date_descriptions":["Since 2011"],"cluster_name":"Emissions And Nuclear Events","has_geo_fields":false,"has_contact_fields":false,"has_temporal_fields":false,"has_financial_fields":false,"has_business_data":true,"resource_version_url":"https://www.nrc.gov/cdn/legacy/reactors/operating/dataset/scram-event-notifications.xlsx"},"schema_count":1,"schemas":[{"columns":["website","business_name","business_name_2"],"column_mapping":null,"sample_rows":[]}]}