ENS 41527
ENS Event | |
|---|---|
09:00 Mar 26, 2005 | |
| Title | Technical Specification Required Shutdown Due to Inoperable Esw Train. |
| Event Description | The following information was faxed by the licensee:
At 0300, 3/23/05, 72-hour Technical Specification Action 3.7.8.A was entered when a pinhole leak was discovered in 'B' Essential Service Water (ESW). Subsequent ultrasonic testing (UT) determined that approximately seven linear feet of piping in the 'B' ESW train was affected and required replacement. UT testing was satisfactorily performed on the 'A' ESW train to ensure a similar problem did not exist. 'B' ESW train piping replacement was performed in accordance with planned work documents, however at 2100, 3/25/05 all necessary repairs and retests had not been completed. Although only 66 hours7.638889e-4 days <br />0.0183 hours <br />1.09127e-4 weeks <br />2.5113e-5 months <br /> had expired since entering 72-hour Technical Specification Action 3.7.8.A, Callaway Plant proactively decided to commence a reactor plant shutdown in accordance with Technical Specification Action 3.7.8.B for an inoperable 'B' Essential Service Water train. Once entered, Technical Specification Action 3.7.8.B requires the reactor plant to be in Mode 3 within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and Mode 5 within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. The Licensee notified the NRC resident inspector." The licensee will perform other maintenance activities during this outage. All systems functioned as required.
The licensee completed repairs on the B ESW system and exited the LCO at 0249 on 03/27/05. Notified R4DO (Pick). |
| Where | |
|---|---|
Callaway  Missouri (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
| LER: | 05000483/LER-2005-002 |
| Time - Person (Reporting Time:+-10.25 h-0.427 days <br />-0.061 weeks <br />-0.014 months <br />) | |
| Opened: | Hope Bradley 22:45 Mar 25, 2005 |
| NRC Officer: | John Knoke |
| Last Updated: | Mar 27, 2005 |
| 41527 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (99 %) |
WEEKMONTHYEARENS 512532015-07-23T06:15:00023 July 2015 06:15:00
[Table view]10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Initiation of Plant Shutdown Due to Rcs Leakage ENS 448632009-02-19T11:30:00019 February 2009 11:30:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Power Supply Failure Resulting in a Tech Spec Required Shutdown ENS 417812005-06-17T00:02:00017 June 2005 00:02:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Unit Commenced a Tech Spec Required Shutdown Due to an Electrical Problem Affecting a Safety Related Battery ENS 415272005-03-26T09:00:00026 March 2005 09:00:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Technical Specification Required Shutdown Due to Inoperable Esw Train. ENS 402632003-10-21T06:00:00021 October 2003 06:00:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Plant Shutdown Required by Technical Specifications 2015-07-23T06:15:00 | |