ENS 51185

v t e ENS Event
03:35 Jun 27, 2015
Title	Both Aux Feedwater Trains Declared Inoperable
Event Description	On June 26, 2015 at 2335 [EDT], with Auxiliary Feedwater (AFW) train 1 declared inoperable for scheduled surveillance testing, AFW train 2 was declared inoperable as a result of the supply breaker for SW1395, Service Water Loop 2 secondaries isolation valve, being found open, i.e. out of its required position. Limiting Condition for Operation (LCO) 3.7.5 Condition D was entered for two Emergency Feedwater Trains inoperable. AFW Train 1 and the non-safety related motor driven AFW pump were available to provide emergency feedwater if required. The breaker was verified to be functioning as required and then closed, restoring the safety function. All associated LCOs were exited by 0133 [EDT] on June 27, 2015. The licensee notified the NRC Resident Inspector.

ENS 51185 +/-
Where
Davis Besse Ohio (NRC Region 3)
Reporting

10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat
LER:	05000346/LER-2015-003 Regarding Inadvertent Breaker Operation Renders Control Room Emergency Air Temperature Control System Inoperable
Time - Person (Reporting Time:+3.68 h0.153 days <br />0.0219 weeks <br />0.00504 months <br />)
Opened:	Mark Helle 07:16 Jun 27, 2015
NRC Officer:	Mark Abramovitz
Last Updated:	Jun 27, 2015
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v • d • e

v t e Emergency Notification System
Davis Besse with 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat
WEEKMONTHYEAR2019-08-19T13:24:00 [Table view]
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