ENS 52455: Difference between revisions
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StriderTol (talk | contribs) (Created page by program invented by Mark Hawes) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
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| event date = 12/21/2016 13:50 EST | | event date = 12/21/2016 13:50 EST | ||
| last update date = 12/21/2016 | | last update date = 12/21/2016 | ||
| title = Unanalyzed Condition Due | | title = Unanalyzed Condition Due to Valve Failure | ||
| event text = During review of the Limerick future modification list, a concern was raised with a proposed modification for HV-011-015A, ESW [Emergency Service Water] 'A' Discharge to 'B' RHR Service Water Return, which failed to fully close during routine testing. | | event text = During review of the Limerick future modification list, a concern was raised with a proposed modification for HV-011-015A, ESW [Emergency Service Water] 'A' Discharge to 'B' RHR Service Water Return, which failed to fully close during routine testing. | ||
As a result of the failure to close, a clearance was applied and a 10CFR50.59 screening was performed to close and de-energize HV-011-015A and open and de-energize valve HV-011-011A, ESW 'A' Discharge to 'A' RHR [Residual Heat Removal] Service Water Return. This clearance isolated one of the two ESW return flow paths so that only one flow path is available to return cooling water flow to the spray pond. | As a result of the failure to close, a clearance was applied and a 10CFR50.59 screening was performed to close and de-energize HV-011-015A and open and de-energize valve HV-011-011A, ESW 'A' Discharge to 'A' RHR [Residual Heat Removal] Service Water Return. This clearance isolated one of the two ESW return flow paths so that only one flow path is available to return cooling water flow to the spray pond. | ||
Latest revision as of 21:43, 1 March 2018
| Where | |
|---|---|
Limerick  Pennsylvania (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
| Time - Person (Reporting Time:+0.92 h0.0383 days <br />0.00548 weeks <br />0.00126 months <br />) | |
| Opened: | Matthew Bonanno 19:45 Dec 21, 2016 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Dec 21, 2016 |
| 52455 - NRC Website
| |