on nuclear power plants in EPRI NP, “Guidelines for Nuclear Plant Response to an Earthquake,” December This regulatory. These guidelines are in EPRI NP, “A Criterion for Determining Earthquake,” July ; EPRI NP, “Guidelines for Nuclear Plant. EPRI-NP Guidelines for Nuclear Plant Response To an Earthquake.
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The NRC technical evaluation of restart readiness can be viewed at the following links: Following the earthquake, both North Anna units experienced a complete loss of offsite alternating current AC power LOOP sources to emergency electrical buses due to the actuation of transformer pressure relays from the effects of seismic action.
Contact us if a location is wrong. Thu, ERF description: Cynthia Jones ERF address: Due to additional seismic activity, North Anna declared an NOUE on eppri other occasions with the final one being declared on September 1, The inspections found that the equipment was in satisfactory condition. Here you only see the latest event report ERF send date: Drag or zoom the map to explore different areas.
On August 23,an earthquake measuring 5. A backup, “station blackout” diesel generator was started to assume the loads that were being supplied by the 2H EDG. If hundred incidents or more are within the map, the yellow perimeter indicates from where events are excluded. The map shows a maximum of incidents. The plant exited the NOUE on the afternoon of August 24 after completing all walkdown inspections of the equipment that is most susceptible to seismic activity.
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To demonstrate that no functional damage occurred as a result of the earthquake and that it was safe to operate the facility without undue risk to the health and safety of the public, the North Anna Power Station operator pn a number of inspections, tests, and analyses under the oversight of the United States Nuclear Regulatory Commission.
The CAL confirmed the understanding that the plant operator was not to enter Modes 1 through 4 until the NRC has completed its safety evaluation and reported its conclusion to the plant operator in writing. Cook and Palisades in Michigan. Units 1 and 2 entered cold shutdown conditions eprl August 24, and August 25,respectively. To demonstrate that no functional damage occurred as a result of the earthquake and that it was safe to operate the facility without undue risk to the health and safety of the public, the North Anna Power Station operator performed a mp of inspections, tests, and analyses, consistent with EPRI NP, “Guidelines for Nuclear Plant Response to an Earthquake.
Last update on 01 Dec ERF affiliation: Therefore, on August 26, the operator declared all safety-related SSCs of Units 1 and 2 inoperable for technical specifications purposes.
On August 29, the NRC dispatched an Augmented Inspection Team AIT to the North Anna Power Station to assess the circumstances surrounding the total loss of offsite power and dual unit reactor trip, the emergency diesel generator coolant leak and other plant equipment issues. Sometimes there are multiple event reports, updating the rating, the event description.
EPRI-NP | Guidelines for Nuclear Plant Response To an Earthquake | Document Center, Inc.
Amplifying information concerning the NRC actions in response to the August 23, earthquake in Virginia is available in the NRC’s website at the following link: All of these plants exited their NOUE declarations after completing inspections and receiving confirmation of normal conditions. None of the rpri resulted in any impact to plant structures, systems, or components.
Here you only see the latest event report.