ENS 54130: Difference between revisions
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| emergency class = Non Emergency | | emergency class = Non Emergency | ||
| notification date = 06/24/2019 21:18 | | notification date = 06/24/2019 21:18 | ||
| retracted = Yes | |||
| notification by = John Walkowiak | | notification by = John Walkowiak | ||
| NRC officer = Thomas Kendzia | | NRC officer = Thomas Kendzia | ||
| event date = 06/24/2019 18:15 EDT | | event date = 06/24/2019 18:15 EDT | ||
| last update date = | | last update date = 09/30/2019 | ||
| title = | | title = En Revision Imported Date 10/1/2019 | ||
| event text = During a review of industry Operating Experience it was identified that there were unprotected DC control circuits for | | event text = EN Revision Text: POTENTIAL UNANALYZED CONDITION DUE TO UNPROTECTED CONTROL CIRCUITS RUNNING THROUGH MUTILPLE FIRE AREAS | ||
During a review of industry Operating Experience it was identified that there were unprotected DC control circuits for | |||
non safety-related DC motors which are routed from the Battery Charger Rooms to other separate fire areas. Circuit Breakers used to protect the motor power conductors appear to be inadequate to protect the control conductors. The concern is that under fire safe shutdown conditions, it is postulated that a fire in one area can cause short circuits potentially resulting in secondary fires or cable fires in other fire areas where the cables are routed. The secondary fires or cable failures are outside the assumptions of the 10 CFR 50 Appendix R Safe Shutdown Analysis. | non safety-related DC motors which are routed from the Battery Charger Rooms to other separate fire areas. Circuit Breakers used to protect the motor power conductors appear to be inadequate to protect the control conductors. The concern is that under fire safe shutdown conditions, it is postulated that a fire in one area can cause short circuits potentially resulting in secondary fires or cable fires in other fire areas where the cables are routed. The secondary fires or cable failures are outside the assumptions of the 10 CFR 50 Appendix R Safe Shutdown Analysis. | ||
This condition is reportable as an 8-hour ENS report in accordance with 10 CFR 50.72(b)(3)(ii)(B) as an unanalyzed condition. Requirements of the Technical Requirements Manual (TRM) for the affected fire areas will be implemented." | This condition is reportable as an 8-hour ENS report in accordance with 10 CFR 50.72(b)(3)(ii)(B) as an unanalyzed condition. Requirements of the Technical Requirements Manual (TRM) for the affected fire areas will be implemented." | ||
The licensee has notified the NRC | The licensee has notified the NRC Resident Inspector. | ||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2019/ | * * * RETRACTION FROM ROBERT GRAHAM TO HOWIE CROUCH AT 2045 EDT ON 9/30/19 * * * | ||
In accordance with NUREG-1022, Sections 2.8 and 5.1.2, James A. FitzPatrick Nuclear Power Plant is retracting (formally withdrawing) Licensee Event Report (LER) Number 2019-002. | |||
LER 2019-002 was transmitted to the NRC via letter JAFP-19-0080 dated August 23, 2019. The LER reported, under 10 CFR 50.73(a)(2)(ii)(B), the nuclear power plant being in an unanalyzed condition that significantly degraded plant safety. | |||
Subsequent to submittal of LER 2019-002, FitzPatrick Engineering completed analyses using more accurate input conditions. This analysis has determined no credible hot short scenario will result in damage to adjacent cables in other fire zones, showing that the postulated condition would not degrade plant safety. Therefore, James A. FitzPatrick Nuclear Power Plant is retracting LER 2019-002 [and this event notification]. | |||
The licensee will notify the NRC Resident Inspector and the New York State Public Service Commission. | |||
Notified R1DO (DeFrancisco). | |||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2019/20191001en.html#en54130 | |||
}}{{unit info | }}{{unit info | ||
| Unit = 1 | | Unit = 1 | ||
Latest revision as of 07:01, 1 October 2019
| Where | |
|---|---|
Fitzpatrick  New York (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
| Time - Person (Reporting Time:+-0.95 h-0.0396 days <br />-0.00565 weeks <br />-0.0013 months <br />) | |
| Opened: | John Walkowiak 21:18 Jun 24, 2019 |
| NRC Officer: | Thomas Kendzia |
| Last Updated: | Sep 30, 2019 |
| 54130 - NRC Website
| |