ENS 49163
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ENS Event | |
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15:03 Jul 1, 2013 | |
Title | Degraded Condition Due to Rcp Seal Line Pressure Boundary Leakage |
Event Description | On 07/01/2013 at 1103 [EDT], inspection personnel identified leakage from a 3/4 inch small-bore pipe socket weld for RCP 1-2 first stage seal cavity vent line. At current Reactor Coolant System conditions (Normal Operating Pressure and Temperature), the leak rate is approximately 8 to 9 drops per minute.
The plant entered Technical Specification (TS) Limiting Condition for Operation (LCO) 3.4.13, 'RCS Operational Leakage', Condition B. Repairs to the line are being evaluated. This pressure boundary leakage is reportable per 10 CFR 50.72(b)(3)(ii)(A). The NRC Resident Inspector has been notified. The LCO requires the licensee to be in Mode 5 by 2303 EDT on 7/2/13. |
Where | |
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Davis Besse Ohio (NRC Region 3) | |
Reporting | |
10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded | |
LER: | 05000346/LER-2013-002 |
Time - Person (Reporting Time:+0.4 h0.0167 days <br />0.00238 weeks <br />5.4792e-4 months <br />) | |
Opened: | Craig Gillig 15:27 Jul 1, 2013 |
NRC Officer: | Howie Crouch |
Last Updated: | Jul 1, 2013 |
49163 - NRC Website
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Unit 1 | |
---|---|
Reactor critical | Not Critical |
Scram | No |
Before | Hot Standby (0 %) |
After | Hot Standby (0 %) |
WEEKMONTHYEARENS 518372016-03-30T21:15:00030 March 2016 21:15:00
[Table view]10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Degraded Condition Due to Discovery of Pressure Boundary Leakage ENS 491632013-07-01T15:03:0001 July 2013 15:03:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Degraded Condition Due to Rcp Seal Line Pressure Boundary Leakage ENS 480002012-06-06T23:56:0006 June 2012 23:56:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Degraded Condition Due to Discovery of Pressure Boundary Leakage ENS 457642010-03-13T02:43:00013 March 2010 02:43:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Control Rod Drive Mechanism Nozzle Indications ENS 438802008-01-04T07:50:0004 January 2008 07:50:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Pressure Boundary Leakage Discovered During Refueling ENS 424372006-03-21T21:08:00021 March 2006 21:08:00 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Degraded Condition - Indication on Primary Coolant System Pressure Boundary Weld 2016-03-30T21:15:00 | |
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