ML092790555
| ML092790555 | |
| Person / Time | |
|---|---|
| Site: | Kewaunee  |
| Issue date: | 09/22/2009 |
| From: | Scace S Dominion, Dominion Energy Kewaunee |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LER 09-005-00 | |
| Download: ML092790555 (2) | |
Text
Dominion Energy Kewaunee, Inc.
N490 Hwy 42, Kewaunee, WI 54216 Web Address:
vwww.dom.com SEP 22 2009 ATTN: Document Control Desk Serial No. 09-333A U. S. Nuclear Regulatory Commission LIC/JG/RO Washington, DC 20555-0001 Docket No.: 50-305 License No.: DPR-43 DOMINION ENERGY KEWAUNEE, INC.
KEWAUNEE POWER STATION WITHDRAWAL OF LICENSEE EVENT REPORT 2009-005-00 On May 21, 2009, Dominion Energy Kewaunee, Inc. (DEK) submitted Licensee Event Report (LER) 50-305/2009-005-00 pursuant to 10 CFR 50.73. This LER discussed inoperability of both trains of engineered safeguards features (ESF) equipment based on an engineering analysis, which determined that Steam Exclusion Door 140 would not provide adequate steam exclusion protection for this ESF equipment. Consequently, Door 140 was nonfunctional as a hazard barrier and the supported ESF equipment was considered inoperable.
Subsequent physical pressure testing of equivalent doors and evaluation of the test results determined that Door 140 remained capable of fulfilling its steam exclusion function. A series of pressure tests demonstrated that the door (including a metal plate that had been installed over the door's glass window) would withstand the steam overpressure postulated during a high energy line break. The door was pressurized to approximately 1.5 times the pressure expected during the postulated to event.
Therefore, the door remained functional and the supported ESF equipment in the auxiliary building remained operable. Consequently, this condition did not meet the reportability criteria in 10 CFR 50.73. Associated Event Notification EN 44938 was retracted on September 9, 2009.
Based on the above, LER 50-305/2009-005-00 is hereby withdrawn.
If you have any further questions, please contact Mr. Jack Gadzala at (920) 388-8604.
Very truly yours, OE. Scace Site Vice President, Kewaunee Power Station
Serial No. 09-333A Page 2 of 2 Commitments made by this letter: NONE cc:
Regional Administrator, Region III U.S. Nuclear Regulatory Commission 2443 Warrenville Road Suite 210 Lisle, IL 60532-4352 Mr. P. S. Tam Sr. Project Manager U.S. Nuclear Regulatory Commission One White Flint North, Mail Stop 08-H4A 11555 Rockville Pike Rockville, MD 20852-2738 NRC Senior Resident Inspector Kewaunee Power Station