ENS 47314
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ENS Event | |
|---|---|
07:45 Oct 3, 2011 | |
| Title | Unit 2 Entered Tech Spec 3.0.3 After Declaring All Three Containment Recirc Fan Coolers Inoperable |
| Event Description | Indian Point Unit 2 entered TS 3.0.3 (TS Required Shutdown) at 0345 EDT on 10/3/11 after declaring all three Containment Recirc Fan Coolers inoperable due to insufficient Service Water (SW) flow through SW Headers 1, 2, and 3 during the quarterly surveillance test. At 0438 EDT, Unit 2 commenced a controlled shutdown. The licensee has shifted SW flow to Headers 4, 5 and 6 and is in the process of re-performing the test. If the test is successful, they will exit TS 3.0.3. Unit 2 is currently stable at 99% reactor power.
The licensee informed state agencies and the NRC Resident Inspector.
Three trains of Fan Cooler Units (FCU) are inoperable due to insufficient flows during the flow test 2-PT-Q016. Entered ITS 3.0.3 at time 0345 EDT. At time 0438 EDT Unit 2 commenced a plant shutdown. At time 0515 EDT the plant was at 99% and stable under operator control. Service water headers were swapped from the 1,2,3 header to the 4,5,6 header. The plant is in the process of re-performing the FCU flow tests with the 4,5,6 as the essential Service Water header. The licensee informed the NRC Resident Inspector. Notified R1DO (Doerflein).
After swapping Essential Service Water headers from the 1,2,3 header to the 4,5,6 header, 2-PT-Q016 Containment Cooler Unit Cooling Water Flow Test was performed satisfactorily. At 0532 EDT LCO 3.0.3 was exited, and LCO 3.6.6 was met. All five Fan Cooler Units were declared operable. The licensee informed the NRC Resident Inspector. Notified R1DO (Doerflein). |
| Where | |
|---|---|
Indian Point  New York (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
| Time - Person (Reporting Time:+-2.33 h-0.0971 days <br />-0.0139 weeks <br />-0.00319 months <br />) | |
| Opened: | John Taylor 05:25 Oct 3, 2011 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Oct 3, 2011 |
| 47314 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (99 %) |
WEEKMONTHYEARENS 535892018-09-07T04:00:0007 September 2018 04:00:00
[Table view]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, 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Technical Specification Required Shutdown ENS 520392016-06-24T08:00:00024 June 2016 08:00:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Ts Required Shutdown Due to Leaking Service Water Weld on Ccw Hx ENS 507222015-01-08T12:00:0008 January 2015 12:00:00 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 Technical Specification Required Shutdown Due to Loss of Both Channels of Refueling Water Storage Tank Instrumentation ENS 504672014-09-18T15:50:00018 September 2014 15:50:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Misaligned Control Rod ENS 478032012-04-04T09:00:0004 April 2012 09:00:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Inoperable Static Inverter ENS 473142011-10-03T07:45:0003 October 2011 07:45:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unit 2 Entered Tech Spec 3.0.3 After Declaring All Three Containment Recirc Fan Coolers Inoperable ENS 466372011-02-22T19:25:00022 February 2011 19:25:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Service Water Piping Leak ENS 400692003-08-14T20:23:00014 August 2003 20:23:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unusual Event Declared Due to Loss of Offsite Power Greater than 15 Minutes. 2018-09-07T04:00:00 | |
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