ENS 43408
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ENS Event | |
|---|---|
11:45 Jun 6, 2007 | |
| Title | Technical Specification Required Shutdown Initiated on Unit 3 |
| Event Description | At 0746, on 6/6/2007, a Unit 3 shutdown was initiated in accordance with station procedures. Unit 3 entered Technical Specification (TS) 3.0.3 at 0745 on 6/6/2007.
TS 3.0.3 was entered when the Analog Rod Position Indicator (ARPI) for control rod F-4 was declared inoperable. Control rod F-4 is located in control bank C. The ARPI for control rod M6, which is also in control bank C, has been previously declared inoperable. With two ARPIs in control bank C inoperable, TS Limiting Condition for Operation 3.1.3.2, Action a, cannot be met thus necessitating entry into TS 3.0.3. ARPI repairs will be performed as required. The licensee notified the NRC Resident Inspector.
Turkey Point Unit 3 entered Mode 3 at 1152 on 6/6/07 after manually tripping from approximately 25% power. At 1152 Turkey Point exited TS 3.0.3 since the condition for which it was entered no longer applied. The site borated to compensate for the control rods for which position indication was lost. All control rods fully inserted on the trip. The plant is currently steaming to atmospheric relief valves. No primary to secondary tube leaks exist. The licensee will notify the NRC Resident Inspector. Notified R2DO (Fredrickson). |
| Where | |
|---|---|
Turkey Point  Florida (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
| LER: | 05000250/LER-2007-002 |
| Time - Person (Reporting Time:+-2.22 h-0.0925 days <br />-0.0132 weeks <br />-0.00304 months <br />) | |
| Opened: | Eddie Neville 09:32 Jun 6, 2007 |
| NRC Officer: | Joe O'Hara |
| Last Updated: | Jun 6, 2007 |
| 43408 - NRC Website
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Unit 3 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 526232017-03-18T15:07:00018 March 2017 15:07:00
[Table view]10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Reactor Trip and Loss of Ability for Unit 4 to Supply Power to Unit 3 ENS 450432009-05-05T07:30:0005 May 2009 07:30:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown 3C Main Steam Isolation Valve Problems ENS 444182008-08-15T20:04:00015 August 2008 20:04:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Shut Down Required by Technical Specifications ENS 439192008-01-18T22:44:00018 January 2008 22:44:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Two Inoperable Rod Position Indicators in the Same Rod Group ENS 438962008-01-12T10:41:00012 January 2008 10:41:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Two Rod Position Indicators (Rpis) Out in One Rod Bank ENS 438882008-01-10T10:02:00010 January 2008 10:02:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Two Rod Position Indicators (Rpis) Out in One Rod Bank ENS 434082007-06-06T11:45:0006 June 2007 11:45:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Initiated on Unit 3 ENS 412322004-11-30T13:50:00030 November 2004 13:50:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Dropped Control Rod ENS 412292004-11-29T05:09:00029 November 2004 05:09:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specifications Required Shutdown Due to Dropped Control Rod 2017-03-18T15:07:00 | |
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