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| Entered date | Event description | |
|---|---|---|
| ENS 47583 | 10 January 2012 14:44:00 | Florida Department of Environmental Protection was notified at 1130 EST on 01/10/12 that Stormwater Basin Discharge for the month of December exceeded the total monthly allowable limit for Total Suspended Solids (TSS). The Monthly Average for TSS limit is 34 mg/l. The limit per the St. Lucie Plant DEP Discharge Permit is 30 mg/l for the month. This limit was exceeded due to rainfall and required pumping prior to an additional sample point. While the basin was pumped, the Daily Maximum Limit of 100 ppm was not exceeded. The FDEP representative concurred that there was no threat to the public as a result of this discharge. This non-emergency notification is being made pursuant to 10 CFR 50.72(b)(2)(xi) due to the Offsite Notification to the Florida Department of Environmental Protection. The licensee informed the NRC Resident Inspector. |
| ENS 46018 | 16 June 2010 19:20:00 | At 1710 EDT, Unit 1 was manually tripped due to two dropped control rods. All CEAs (Control Element Assemblies) fully inserted on the trip. Steam generator level control responded as expected and no pressurizer or power operated relief valves opened. RCS heat removal is being maintained by main feedwater and steam bypass control systems. All other systems functioned normally and the plant has stabilized at normal operating temperature and pressure in Mode 3. This non-emergency notification is being made pursuant 10 CFR 50.72(b)(2)(iv)(B) due to manual actuation of RPS. The licensee characterized the manual trip as uncomplicated. The second rod dropped within a very short time of the first rod. The cause of the rod drops is still under investigation. The licensee noted that no activities involving the rod control system were in progress when the event occurred. The licensee was at 45% as part of its post outage power ascension unrelated to the rod drop. The manual reactor trip action was taken per procedure when the second rod dropped. The reactor trip had no impact on Unit 2 operation. The NRC Resident Inspector has been notified. |