ENS Event | |
|---|---|
06:35 Sep 3, 2011 | |
| Title | Technical Specification Required Shutdown Due to Rhr/Cs Room Cooler Being Inoperable |
| Event Description | Technical specification required shutdown due to reactor recirculation unit #7 [RHR/CS Room Cooler] inoperable. This cooling unit impacts the operability of 'A' Low Pressure Coolant Injection (LPCI) and 'A' Core Spray (CS).
Entered TS 3.5.A.6. Commenced reducing power for 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> cold shutdown LCO. The licensee has initiated repairs to the cooling unit. The licensee notified the NRC Resident Inspector.
The licensee exited TS 3.5.A.6 at 1000 EDT and declared CS operable after implementing compensatory measures. They are currently in a 7-day LCO Action Statement and expect to complete repairs within the time allowed. The Unit is currently holding power at 98%. The licensee informed the NRC Resident Inspector. |
| Where | |
|---|---|
| Vermont Yankee File:NorthStar Vermont Yankee icon.png Vermont (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
| Time - Person (Reporting Time:+-3.12 h-0.13 days <br />-0.0186 weeks <br />-0.00427 months <br />) | |
| Opened: | Michael Pletcher 03:28 Sep 3, 2011 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Sep 3, 2011 |
| 47238 - NRC Website
Loading map... | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (99 %) |
| After | Power Operation (96 %) |
Vermont YankeeFile:NorthStar Vermont Yankee icon.png with 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
WEEKMONTHYEARENS 472382011-09-03T06:35:0003 September 2011 06:35:00
[Table view]10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Rhr/Cs Room Cooler Being Inoperable ENS 459872010-06-08T15:26:0008 June 2010 15:26:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Primary Containment Leak Greater than Limits ENS 402022003-09-27T11:40:00027 September 2003 11:40:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Tech Spec Required Shutdown Due to Rcs Leakage Increase Greater than 2 Gpm 2011-09-03T06:35:00 | |
