05000346/FIN-2005010-01
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Finding | |
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| Title | Failure of the Emergency Planning Zone Sirens |
| Description | During an NRC inspection conducted between October 25 and October 29, 2004, at the Davis-Besse Nuclear Power Station, a violation of NRC requirements was identified. In accordance with the NRC Enforcement Policy, the violation is listed below: Title 10 CFR 50.54(q) requires, in part, that a licensee authorized to operate a nuclear power reactor shall follow and maintain in effect emergency plans which meet the standards in Section 50.47(b). Title 10 CFR 50.47(b)(5) requires, in part, the means to provide early notification and clear instruction to the populace within the plume exposure pathway Emergency Planning Zone (EPZ) have been established. Section 7.7 of Revision 23 of the Davis-Besse Nuclear Power Stations emergency plan indicated that the EPZ Prompt Notification System implements the requirements of 10 CFR 50.47(b)(5). Section 7.7 states that the Alert and Notification System (ANS), consists of 54 sirens that were installed to provide an acoustic alerting signal for the residents and transients within the 10 mile radius of the Davis-Besse Station, and that the sounding of these sirens would alert the public to tune to local radio stations for Emergency Alert Station messages. The emergency plan also indicated that local officials would activate the sirens from the Ottawa County Sheriffs Office. Contrary to the above, between April 27 and May 7, 2004, the FirstEnergy Nuclear Operating Company, a licensee authorized to operate the Davis-Besse Nuclear Power Station, failed to provide a means for early notification and clear instruction to the populace within the plume exposure pathway EPZ. Specifically, on April 6th, the time signature of the siren activation equipment, located in the Ottawa County Sheriff's Office, was not revised the following the change to daylight savings time. On April 26th, the licensee conducted a maintenance activity which incorrectly set the time signature of one siren to one hour ahead of the actual day light savings time. On April 27th, the licensee conducted a routine polling of all of the EPZ sirens which caused the time signatures of the remaining EPZ sirens to be set one hour ahead of the actual daylight savings time. The combination of these changes caused the time signatures of the activation equipment and the EPZ sirens to differ by more than the allowed 1.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> which blocked activation of the sirens. As a result, the Ottawa County Sheriff's Office could not activate the 49 EPZ sirens located in Ottawa County until May 7, 2004, when the combined results of these events were identified. This violation is associated with a White Significance Determination Process finding. |
| Site: | Davis Besse  |
|---|---|
| Report | IR 05000346/2005010 Section 4OA5 |
| Date counted | Dec 31, 2004 (2004Q4) |
| Type: | Violation: White |
| cornerstone | Emergency Prep |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 93812 |
| Inspectors (proximate) | K Riemer R Kahler T Ploskib Bersonc Lipa C Pederson K O'Brien K Riemer M Satorius R Kahler |
| INPO aspect | |
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Finding - Davis Besse - IR 05000346/2005010 | |||||||||||||||||||||||||||||||||
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Finding List (Davis Besse) @ 2004Q4
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