The two nuclear reactors at the plant, located about 50 miles northwest of Richmond, Va., and 11 miles from the quake’s epicenter, automatically shut down after the 5.8-magnitude earthquake caused ground movement around twice the level for which the plant was designed.
The utility focused on fixing minor damage, ranging from small buckles and cracks in tile floors to damaged bolts on large metal parts that transfer power from transformers to the electrical grid and into homes. The quake also caused 25 massive nuclear storage containers at the plant to shift, and Dominion has yet to reveal if they were affected by aftershocks.
The company expected it would take about 10 days for the plant to be fully operational as both reactors were restarted in phases and testing of all safety equipment and inspections of containment areas were done during that process.
“It did take us a little longer than we thought,” Zuercher said. A problem with an electrical connector, tuning a new turbine and minor pump repairs delayed the restart of the second unit, Zuercher said.
- Despite Protests and Scandal Fission Resumes at North Anna Nuclear Power Plant (enformable.com)
- NRC set to validate Dominion’s use of ‘unaccepted’ EPRI report to allow North Anna restart (enformable.com)
- NRC rejects quick restart at North Anna nuclear plant (enformable.com)
- November 1, 2011 Category 1 public meeting – NRC’s restart review and inspection of North Anna Nuclear Power Station following the earthquake of August 23, 2011 (enformable.com)
- North Anna Unit 3 Permit – EQ Reveals Major Design Deficiency that has Safety Implications (enformable.com)
- North Anna Asks for Exemption from CoC For 12 Fuel Assemblies Loaded In Dry Fuel Storage Over Decay Heat Limits (enformable.com)
- NRC not ready to allow restart of North Anna after earthquake – No restart plan given (enformable.com)