ENS 43679

v t e ENS Event
04:00 Aug 2, 2007
Title	Part 21 Report - Poppet Nut and Stem Assembly Degradation on Msiv
Event Description	In accordance with 10 CFR 21.21(d)(3)(ii), FirstEnergy Nuclear Operating Company (FENOC) is providing the required written notification of a concern regarding the potential for vibration inducted wear on the pilot poppet nut and stem assemblies provided for use in the Beaver Valley Power Station Unit No. 2 (BVPS-2) Main Steam System Isolation Valves [MSIV] that if uncorrected could potentially create a significant safety hazard. FENOC evaluated the concern via a Prompt Operability Determination and concluded that there is reasonable assurance that currently installed valve components at BVPS-2 are operable and plans to replace the affected components during the next BVPS-2 refueling outage. Valve manufacturer of defective valve components is Weir Valves and Controls USA Inc. in Salem, MA. The licensee notified the NRC Resident Inspector.

ENS 43679 +/-
Where
Firstenergy Nuclear Operating Co. Shippingport, Pennsylvania (NRC Region 1)
Organization:	Firstenergy Nuclear Operating Co.
Reporting

10 CFR 21.21
Time - Person (Reporting Time:+1452.57 h60.524 days <br />8.646 weeks <br />1.99 months <br />)
Opened:	Peter Sena Iii 16:34 Oct 1, 2007
NRC Officer:	John Knoke
Last Updated:	Oct 1, 2007
43679 - NRC Website
v • d • e

v t e Emergency Notification System
Firstenergy Nuclear Operating Co. with 10 CFR 21.21
WEEKMONTHYEAR2007-08-02T04:00:00 [Table view]
[ENS list for Firstenergy Nuclear Operating Co.]

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