ENS 44485
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ENS Event | |
|---|---|
06:41 Sep 14, 2008 | |
| Title | Dropped Control Element Resulting in Entry Into Technical Specification Required Shutdown Lco |
| Event Description | At 23:45 on 9/13/08, one control element assembly (CEA) dropped to the bottom of the core from the upper electrical limit. Technical Specification LCO 3.1.3.1 Action e. was entered. The CEA was not able to be realigned with the other CEA's in its group within the time constraints of the COLR. Technical Specification LCO 3.1.3.1 Action f. was entered and a down power to 70% was initiated. Actions to repair and retrieve the CEA could not be completed within the time constraint of LCO 3.1.3.1 Action f. and a shutdown was commenced to comply with Technical Specifications at 0241 on 9/14/08. The CEA was recovered and restored to OPERABLE at 0258 on 9/14/08 and the shutdown was halted. The plant is currently being returned to full power operation. This four hour non-emergency report is being made pursuant to 10 CFR 50.72(b)(2)(i), 'The initiation of any nuclear plant shutdown required by Technical Specifications.'
The licensee notified the NRC Resident Inspector. |
| Where | |
|---|---|
Saint Lucie  Florida (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
| Time - Person (Reporting Time:+-0.57 h-0.0238 days <br />-0.00339 weeks <br />-7.80786e-4 months <br />) | |
| Opened: | Fred Pollak 06:07 Sep 14, 2008 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Sep 14, 2008 |
| 44485 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (70 %) |
| After | Power Operation (68 %) |
WEEKMONTHYEARENS 556932022-01-07T00:37:0007 January 2022 00:37:00
[Table view]10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Shutdown Initiated in Accordance with Technical Specifications ENS 521382016-08-01T07:42:0001 August 2016 07:42:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Plant Shutdown Due to Pressure Boundary Leakage Greater than Allowable Limit ENS 509772015-04-12T01:00:00012 April 2015 01:00:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Safety Injection Tank Outlet Piping Leak ENS 503102014-07-25T15:29:00025 July 2014 15:29:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown, 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Technical Specification Required Shutdown Due to a Safety Injection Valve Defect ENS 444852008-09-14T06:41:00014 September 2008 06:41:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Dropped Control Element Resulting in Entry Into Technical Specification Required Shutdown Lco ENS 438712007-12-28T09:50:00028 December 2007 09:50:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown - Dropped Cea ENS 420522005-10-12T18:40:00012 October 2005 18:40:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Shutdown Based on Loss of Two Channels of Containment Isolation Radiation Monitor 2022-01-07T00:37:00 | |
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