ML021330112
| ML021330112 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 04/24/2002 |
| From: | Barron H Duke Energy Corp |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| BL-02-001 | |
| Download: ML021330112 (5) | |
Text
P Duke E Energy.
Duke Energy Corporation McGuire Nuclear Station 12700 Hagers Ferry Road Huntersville, NC 28078-9340 (704) 875-4800 OFFCE (704) 875-4809 FpAx H. B. Barron Vice President April 24, 2002 U.S. Nuclear Regulatory Commission ATTN:
Document Control Desk Washington D.C.
20555
Subject:
McGuire Nuclear Station Units 1 & 2 Docket Nos.
50 -369, 370 Response to NRC Bulletin 2002-01:
Reactor Pressure Vessel Head Degradation and Reactor Coolant Pressure Boundary Integrity Pursuant to 10 CFR 50.54(f),
this letter and the associated attached Enclosure provides Duke Energy Corporation's (Duke's) response to specific items of NRC Bulletin 2002-01 for McGuire Nuclear Station.
This bulletin requested plant-specific information as a result of NRC staff concerns regarding reactor pressure vessel head degradation and reactor coolant pressure boundary integrity.
Responses are provided for Bulletin items 2.A and 2.B in Enclosure I.
These responses provide information concerning the results of reactor vessel head inspection.
If you have questions or need additional information, please contact Gregory S.
Kent at (704)373-6032.
Very truly yours, H.B. Barron ENCLOSURE
_ýcq 13
U.S.
NRC April 24, 2002 Page 2 xc:
L.A. Reyes Administrator Region II U.S. Nuclear Regulatory Commission Atlanta Federal Center 61 Forsyth St.,
SW, Suite 23T85 Atlanta, GA 30303 R.E. Martin (addressee only)
NRC Senior Project Manager (MNS)
Office of U.S. Nuclear Reactor Regulation One White Flint North, Mail Stop 0-8 H12 Washington, DC 20555-0001 S.M. Shaeffer Senior Resident Inspector McGuire Nuclear Station
U.S.
NRC April 24, Page 3 2002 OATH or AFFIRMATION H.B. Barron, 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.
/V/c**
Vice President, McGuire Nuclear Site Subscribed and sworn to me:
101 - '
Date
, Notary Public
-I Date M CAoram s G.
Epres/
My Commission Expires:
U.S. NRC April 24, 2002 Page 4 bcc: L.F. Vaughn M.T.
Cash C.J. Thomas M.R. Robinson G.S.
Kent J.M. Shuping D.E. Whitaker K.L. Crane McGuire Master File ELL
ENCLOSURE I McGuire Nuclear Station Response to NRC Bulletin 2002-01 Requested Information
- 2.
Within 30 days after restart following the next inspection of the reactor pressure vessel head to identify any degradation, all PWR addressees are required to submit to the NRC the following information:
A.
the inspection scope (if different than that provided in response to item I.D.) and results including the location, size and nature of any degradation detected
Response
A complete bare metal visual inspection of the McGuire Nuclear Station (MNS) Unit 2 reactor pressure vessel head was conducted on March 21, 2002.
The scope of this inspection is consistent with MNS's response to item I.D. of NRC Bulletin 2002-01.
Video cameras provided the predominant method of inspection. For areas obscured to the camera, inspectors supplemented the inspection with the use of handheld mirrors and lights. The results of this inspection indicated that the head is free of boron deposits and no corrosion or wastage was noted.
The MNS Unit 2 refueling outage for end of cycle 14 was concluded on March 27, 2002, when the unit was placed on-line.
Requested Information
- 2.
Within 30 days after restart following the next inspection of the reactor pressure vessel head to identify any degradation, all PWR addressees are required to submit to the NRC the following information:
B. The corrective actions taken and the root cause of the degradation.
Response
No degradation was identified. Therefore, no corrective action was necessary.