ENS 46654

v t e ENS Event
03:59 Mar 4, 2011
Title	Techncial Specification Required Shutdown Due to Inoperable Hpci
Event Description	At 2259 EST, Susquehanna Unit 1 commenced a TS Required shutdown for High Pressure Coolant Injection (HPCI) T.S. 3.5.1. Due to a suspected steam leak, the HPCI Inboard Steam Supply Valve HV155F002 was closed to attempt to identify and isolate an unknown drywell leakage condition. After closing the HV155F002, a detectable change in drywell leak rate occurred, therefore, HV155F002 was left closed. Closing HV155F002 makes HPCI INOP and UNAVAILABLE. TS 3.5.1 was entered for this condition on 2/25/2011 at 2136 EST. LCO completion time for T.S. 3.5.1 entry is 3/11/2011 at 2136 EST. The licensee has notified the NRC Resident Inspector and State authorities. The licensee also anticipates issuing a press release.

ENS 46654 +/-
Where
Susquehanna Pennsylvania (NRC Region 1)
Reporting

10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown
Time - Person (Reporting Time:+-4.53 h-0.189 days <br />-0.027 weeks <br />-0.00621 months <br />)
Opened:	Ron Fry 23:27 Mar 3, 2011
NRC Officer:	Bill Huffman
Last Updated:	Mar 3, 2011
46654 - NRC Website
v • d • e

v t e Emergency Notification System
Susquehanna with 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown
WEEKMONTHYEAR2019-05-22T06:56:00 [Table view]
[ENS list for Susquehanna]

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