ENS 47901

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v t e ENS Event
13:35 May 6, 2012
Title	Offsite Notification Made for Npdes Noncompliance
Event Description	This event is being reported in accordance with 10 CFR 50.72(b)(2)(xi). On May 6, 2012, during daily chlorination activities, it was identified that the National Pollutant Discharge Elimination System (NPDES) permit limit for Total Residual Chlorine was exceeded between approximately 0935 hours0.0108 days <br />0.26 hours <br />0.00155 weeks <br />3.557675e-4 months <br /> [EDT] and 0947 hours0.011 days <br />0.263 hours <br />0.00157 weeks <br />3.603335e-4 months <br /> [EDT] when the noncompliance was corrected. The maximum measured value was 0.29 mg/L, which exceeded the NPDES Maximum Concentration Limit of 0.2 mg/L. On May 6, 2012, at approximately 1930 hours0.0223 days <br />0.536 hours <br />0.00319 weeks <br />7.34365e-4 months <br /> [EDT], a 'Noncompliance Notification for Exceedance of a Daily Maximum Discharge Limit' was made to the Ohio Environmental Protection Agency. The cause of the NPDES permit noncompliance is under investigation. Chlorination evolutions have been suspended pending investigation results. At the time of the event, the plant was in Mode 1 at 100 percent rated thermal power. This event is also being reported in accordance with the plant's operating license, appendix B, Environmental Protection Plan, which states, in part, that any occurrence of an unusual or important event that indicates or could result in environmental impact causally related to plant operation shall be recorded and reported to the NRC within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> followed by a written report. The licensee notified the NRC Resident Inspector.

ENS 47901 +/-
Where
Perry Ohio (NRC Region 3)
Reporting

10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
Time - Person (Reporting Time:+7.3 h0.304 days <br />0.0435 weeks <br />0.01 months <br />)
Opened:	Glendon Burnham 20:53 May 6, 2012
NRC Officer:	Pete Snyder
Last Updated:	May 6, 2012
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v • d • e

v t e Emergency Notification System
Perry with 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release
WEEKMONTHYEAR2024-07-24T14:46:00 [Table view]
[ENS list for Perry]

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