ENS Event | |
|---|---|
05:55 Feb 15, 2005 | |
| Title | Tech Spec Required Shutdown |
| Event Description | The following information was provided by the licensee via e-mail:
On February 10, 2005, plant operators observed an abnormal flow condition on Unit 2 Train 'B' Component Cooling Water (CCW) from the Shutdown Cooling Heat (SDC) exchanger and, at about 2315 PST, declared Train 'B' of Containment Spray inoperable. This caused Unit 2 to enter a seven-day action statement (TS 3.6.6.1). Although it may have been possible to correct the abnormal flow condition on-line, SCE has elected to shutdown Unit 2. Plant Operators initiated the shutdown at about 2155 PST on February 14, 2005. SCE in reporting this occurrence in accordance with 10CFR50.72(b)(2)(i). At the time the shutdown was initiated, Unit 2 was operating at about 100% power. Unit 3 continues to operate at about 100 % power. The NRC Resident Inspectors have been briefed on the shutdown plans and will be provided with a copy of this report. |
| Where | |
|---|---|
San Onofre  California (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
| Time - Person (Reporting Time:+-4.7 h-0.196 days <br />-0.028 weeks <br />-0.00644 months <br />) | |
| Opened: | Clay Williams 01:13 Feb 15, 2005 |
| NRC Officer: | Bill Gott |
| Last Updated: | Feb 15, 2005 |
| 41410 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 455642009-12-12T09:26:00012 December 2009 09:26:00
[Table view]10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unusual Event Declared Due to Both Emergency Diesel Generators Being Inoperable ENS 444562008-09-01T17:35:0001 September 2008 17:35:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Shutdown Due to Emergency Diesel Generator Shorting Ring Cracks ENS 440922008-03-25T15:40:00025 March 2008 15:40:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Plant Shutdown Initiated Due to Degraded Battery Voltage ENS 424512006-03-29T08:01:00029 March 2006 08:01:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unit 3 Shutdown Due to Potential Safety Injection Tank Gasket Issue ENS 414102005-02-15T05:55:00015 February 2005 05:55:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Tech Spec Required Shutdown ENS 403962003-12-17T11:15:00017 December 2003 11:15:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Loss of Both Trains of Safety Injection 2009-12-12T09:26:00 | |