ML040420217
| ML040420217 | |
| Person / Time | |
|---|---|
| Site: | Oconee  (DPR-038) |
| Issue date: | 02/03/2004 |
| From: | Rosalyn Jones Duke Power Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| BL-03-002 | |
| Download: ML040420217 (4) | |
Text
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_Duke R.
A. JONES lfPowere Vice President A Duke Energy Company Duke Power 29672 / Oconee Nuclear Site 7800 Rochester Highway Seneca, SC 29672 864 885 3158 864 885 3564 fax February 3, 2004 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, Maryland 20852
Subject:
Oconee Nuclear Station, Unit 1 Docket No. 50-269 Response to NRC Bulletin 2003-02: "Leakage from Reactor Pressure Vessel Lower Head Penetrations and Reactor Coolant Pressure Boundary Integrity" in Pursuant to 10 CFR 50.54(f), this letter and Enclosure provide Duke Energy Corporation's (Duke) response to NRC Bulletin 2003-02, Item 2, for the Oconee Nuclear Station Unit 1 (ONS-1). This item requested that Duke provide within 60-days of unit restart, plant-specific information regarding the inspection results of the reactor pressure vessel lower head penetrations performed for ONS-1.
If you have any questions or require additional information, please contact Stephen C. Newman, Oconee Regulatory Compliance Group, at (864) 885-4388.
Very truly s,
R. A. J e ce President Oconee Nuclear Station ENCLOSURE www.duke-energy.com
U. S. Nuclear Regulatory Commission Page 2 February 3, 2004 cc:
L. A. Reyes, Regional Administrator Region 11 M. C. Shannon, Senior Resident Inspector Oconee Nuclear Station Mr. L. N. Olshan, Project Manager Office of Nuclear Reactor Regulation
U. S. Nuclear Regulatory Commission February 3, 2004 Page 3 R. A. Jones, affirms that he is the person who subscribed his name to the foregoing statement, and that all the matters and facts set forth herein are true and correct to the best of his knowledge.
I'~~~~~~-
Subscribed and sworn to me:
d/VC't Ao
, Vice President, Oconee Nuclear Station Date
, Notary Public
, - -- ---.1 -
r My Commission Expires:
(D 1/D/ te
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Date Seal
ENCLOSURE Oconee Nuclear Station Response to NRC Bulletin 2003-02, Item 2 Requested Information (2)
Within 60 days of plant restart following the next inspection of the RPV lower head penetrations, the subject PWR addressees should submit to the NRC a summary of the inspections performed, the extent of the inspections, the methods used, a description of the as-found condition of the lower head, any findings of relevant indications of through-wall leakage, and a summary of the disposition of any findings of boric acid deposits and any corrective actions taken as a result of indications found.
Duke Response On September 25, 2003, Duke conducted a bare metal inspection of the Unit 1::-
reactor vessel lower head, including 360 degrees around 100 percent of the c
bottom mounted instrument (BMI) penetrations. Duke conducted the inspection "
using video cameras and direct visual observation.
The inspection showed no evidence of boron or any other indications of leakage from the reactor vessel lower head or penetrations. No wastage was observed.
Deterioration (flaking) of the original preservative coating on the lower head was noted as well as superficial surface rust attributed to condensation.
The surface of the lower head was cleaned to remove the loose material following the inspection and video-taped for future reference to the as-left condition.
The Oconee Unit 1 refueling outage for end-of-cycle 21 was concluded on January 06, 2004, when the unit was placed on line.