ENS 50977
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ENS Event | |
|---|---|
01:00 Apr 12, 2015 | |
| Title | Technical Specification Required Shutdown Due to Safety Injection Tank Outlet Piping Leak |
| Event Description | During investigation of a small leak on the 2B2 Safety Injection Tank inside Saint Lucie Unit 2 containment, a through wall flaw was identified on Class 2 piping associated with the 2B2 Safety Injection Tank. The 2B2 Safety Injection Tank was declared inoperable on April 11, 2015 at 1204 EDT and Unit 2 entered a 24-hour shutdown action statement for Technical Specification 3.5.1.b. On April 11, 2015 at 2100 EDT, Unit 2 initiated a plant shutdown in compliance with Technical Specifications.
This condition is being reported pursuant to 10 CFR 50.72(b)(2)(i) The electrical grid is stable and no safety-related equipment that would affect a safe shutdown was out of service at the time of the report. The licensee has 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:+-2.75 h-0.115 days <br />-0.0164 weeks <br />-0.00377 months <br />) | |
| Opened: | Charles Pike 22:15 Apr 11, 2015 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Apr 11, 2015 |
| 50977 - NRC Website
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Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (80 %) |
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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