ENS 53548: Difference between revisions

Revision as of 08:01, 13 August 2018

v t e ENS Event
04:00 Aug 12, 2018
Title	Technical Specification Required Shutdown - Loss of 480 Voltage Emergency Bus
Event Description	On 8-12-18 at 0158 EDT, Beaver Valley Unit 2 experienced a loss of 480 Volt 2P Emergency Bus. This resulted in a Loss of Safety Function due to the 2-2 Emergency Diesel Generator [EDG] being Inoperable coincident with the Residual Heat Release Valve (2SVS-HCV104). A Technical Specification shutdown is required per LCO 3.0.3. The Licensee also stated they were in an unanalyzed condition due to the EDG and Residual Heat Release Valve being inoperable at the same time. The Licensee is shutting down to Mode 5 (Cold Shutdown). The Licensee is notifying the Resident Inspector. The Licensee will be making a Press Release about the unplanned shutdown.

ENS 53548 +/-
Where
Beaver Valley Pennsylvania (NRC Region 1)
Reporting

10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown
Time - Person (Reporting Time:+-1.03 h-0.0429 days <br />-0.00613 weeks <br />-0.00141 months <br />)
Opened:	Rob Klindworth 02:58 Aug 12, 2018
NRC Officer:	Richard Smith
Last Updated:	Aug 12, 2018
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v • d • e

v t e Emergency Notification System
Beaver Valley with 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition, 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown
WEEKMONTHYEAR2024-05-09T12:00:00 [Table view]
[ENS list for Beaver Valley]

@@ Line 19: / Line 19: @@
 | event text = On 8-12-18 at 0158 EDT, Beaver Valley Unit 2 experienced a loss of 480 Volt 2P Emergency Bus.  This resulted in a Loss of Safety Function due to the 2-2 Emergency Diesel Generator [EDG] being Inoperable coincident with the Residual Heat Release Valve (2SVS-HCV104).  A Technical Specification shutdown is required per LCO 3.0.3.
 The Licensee also stated they were in an unanalyzed condition due to the EDG and Residual Heat Release Valve being inoperable at the same time.
-The Licensee in the process of shutting down to Mode 5 (Cold Shutdown).
+The Licensee is shutting down to Mode 5 (Cold Shutdown).
 The Licensee is notifying the Resident Inspector.
 The Licensee will be making a Press Release about the unplanned shutdown.
-| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2018/20180812en.html#en53548
+| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2018/20180813en.html#en53548
 }}{{unit info
 | Unit =  2

Revision as of 08:01, 13 August 2018