05000352/FIN-2011004-04
From kanterella
Revision as of 10:43, 30 May 2018 by StriderTol (talk | contribs) (Created page by program invented by StriderTol)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | 10 CFR 50.54(q) requires, in part, that a power reactor licensee follow an emergency plan that meets the requirements of 10 CFR 50.47(b) and Appendix E to 10 CFR Part 50. Contrary to the above, Exelon did not make timely notification when the emergency action level threshold was met for HU5, Natural and Destructive Phenomena Affecting the Protected Area. Specifically, Exelon operators did not declare an Unusual Event within the required fifteen minutes of the earthquake felt onsite on August 23. The actual declaration was nine minutes late. At 1:51 PM, control room operators received a Seismic Monitor System Recording Activated alarm coincident with reports of seismic activity felt by station personnel. The seismic monitoring system at Limerick had previously been declared inoperable due to problems with its power supply, so operators began the compensatory measures which directed the operators to contact the United States Geological Survey to confirm the epicenter and magnitude of the seismic event prior to event classification. The United States Geological Survey has a call queue system to answer inquiries in an orderly manner, and Exelon was on hold until 2:11 PM. Exelon declared the Unusual Event at 2:15 PM and made all appropriate state and local notifications. Exelon entered the untimely event declaration into their corrective action program as IR 1254845. The inspectors determined that the finding was of very low safety significance (Green) in accordance with NRC IMC 0609, Appendix B, Emergency Preparedness Significance Determination Process, Sheet 2, because this was related to an actual event implementation problem for a Notice of Unusual Event. |
| Site: | Limerick  |
|---|---|
| Report | IR 05000352/2011004 Section 4OA7 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | NCV: Green |
| cornerstone | Emergency Prep |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | K Mangan N Sieller S Hammann T Moslak A Rosebrook A Ziedonis D Roberts E Dipaolo E Miller J Ambrosini J Kulp J Lilliendahl J Nicholson |
| INPO aspect | |
| ' | |
Finding - Limerick - IR 05000352/2011004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Limerick) @ 2011Q3
Self-Identified List (Limerick)
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||