ML042530562
| ML042530562 | |
| Person / Time | |
|---|---|
| Site: | Oconee, Mcguire, Catawba  |
| Issue date: | 09/01/2004 |
| From: | Barron H Duke Energy Corp |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| TAC MC3804, TAC MC3805, TAC MC3807, TAC MC3810 | |
| Download: ML042530562 (8) | |
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Duke OrPowere A Duke Energy Company HENRYB.BARRON Group VP, Nuclear Generation and Chief Nuclear Officer Duke Power EC07H / 526 South Church Street Charlotte, NC 28202-1802 September 1, 2004 U. S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Mailing Address:
PO Box 1006 EC07H Charlotte, NC 28201-1006 704 382 2200 704 382 6056 fax hbarron@duke-energy. corn ATTENTION: Document Control Desk
SUBJECT:
Duke Energy Corporation Oconee Nuclear Station, Unit 3, Docket Nos. 50-287 McGuire Nuclear Station, Unit 2, Docket No. 50-370 Catawba Nuclear Station, Units 1 & 2, Docket Nos. 50-413, 50-414 Response to Request for Additional Information Relief Request 04-GO-002 (TAC NOS. MC3804, MC3805, MC3807, MC3810)
Duke Energy Corporation (Duke) submitted Relief Request 04-GO-002 for Oconee Unit 3, McGuire Unit 2 and Catawba Units I and 2 on July 14, 2003. By letter dated August 11, 2004 the NRC Staff requested additional information with respect to several issues within the relief request. The Duke response to this request is attached.
Questions regarding this submittal may be directed to Mary Hazeltine at 704-382-5880.
Very truly yours, Henry B. Barron Attachments 0(./7 www. dukepower. corn
U. S. Nuclear Regulatory Commission September 1, 2004 Page 2 xc w/att:
W. D. Travers, Regional Administrator U. S. Nuclear Regulatory Commission, Region II Sam Nunn Atlanta Federal Center 23T85 61 Forsyth St., SW Atlanta, GA 30303 L. N. Olshan (Addressee only)
NRC Senior Project Manager (ONS)
U. S. Nuclear Regulatory Commission Mail Stop 0-8 H12 Washington, DC 20555-0001 J. J. Shea (Addressee only)
NRC Senior Project Manager (MNS)
U. S. Nuclear Regulatory Commission Mail Stop 0-8 H12 Washington, DC 20555-0001 S. E. Peters (Addressee only)
NRC Project Manager (CNS)
U. S. Nuclear Regulatory Commission Mail Stop 0-8 H12 Washington, DC 20555-0001 M. E. Shannon, NRC Senior Resident Inspector (ONS)
J. B. Brady, NRC Senior Resident Inspector (MNS)
E. F. Guthrie, NRC Senior Resident Inspector (CNS)
U. S. Nuclear Regulatory Commission September 1, 2004 Page 3 bxc w/ att:
R. L. Gill (ECO50)
C. J. Thomas (MGOIRCJ K. L. Crane (MGOIRC)
N. T. Simms (MGO1RC)
L. A. Keller (CNOIRC)
K. E. Nicholson (CNOIRC)
L. J. Rudy (CNOIRC)
B. G. Davenport (ON03RC)
J. E. Smith (ON03RC)
R. P. Todd (ON03RC)
J. M. Ferguson - Date File (CNOISA)
R. K. Rhyne (EC05A)
J. J. McArdle (EC05A)
North Carolina Municipal Power Agency Number 1 Saluda River Electric Cooperative, Inc.
Piedmont Municipal Power Agency North Carolina Electric Membership Corporation MNS MasterFile MC-801.01 (MGOIDM)
CNS MasterFile CN-801.01 (CN04DM)
ONS MasterFile ON-801.01 (ON03DM)
ELL
Response to Request for Additional Information Relief Request 04-GO-002 Catawba, Units 1 and 2, McGuire Unit 2, and Oconee Unit 3 Page 1 of 2
- 1. Clarify the American Society of Mechanical Engineers (ASME) Code of record for each plant and ISI interval that applies including the start and end dates of the applicable ISI interval.
The ASME Section XI, 1989 Edition with no addenda is the applicable code of record for all units requesting relief. Catawba Unit I is in the second Inservice Inspection Interval, which started June 29, 1995 and ends June 29, 2005.
Catawba Unit 2 is in the second Inservice Inspection Interval, which started August 19, 1996 and ends August 19, 2006. Oconee Unit 3 is in the third Inservice Inspection Interval which started December 16, 1994 and ends December 16, 2004.
McGuire Unit 2 will be performing second interval RPV inspections. Specific relief has been granted to extend the 10 year interval 92 days beyond the code allowed 1 year interval extension to complete the Reactor Vessel inspections (Duke Relief Request No.03-004 approved July 20,2004).
- 2. Provide the estimated volumetric coverage that the licensee is expected to obtain with the proposed alternative verses the volumetric coverage that it would obtain under current Code requirements.
The estimated volumetric coverage for the Flange - to - Upper Shell Welds at each unit are as follows:
- a. Catawba Unit 2 = 90.5%
- b. McGuire Unit 2 and Catawba Unit 1 = 90.5%
- c. Oconee Unit 3 = 72.6%
Drawings showing the Flange-to-Upper Shell Welds at each unit are attached as follows: Attachment 1, Catawba Unit 2 Reactor Pressure Vessel Flange-to-Upper Shell Weld, Attachment 2, CNS-1, MNS-2 Flange-to-Upper Shell Weld and, Oconee Unit 3 Reactor Pressure Vessel Flange-to-Upper Shell Weld.
- 4. Under Section I of your submittal you refer to an item number that does not coincide with the applicable ASME Section XI Category B-A, Item Number B31-30. Please clarify that this is an apparent typo in your submittal.
a:
Response to Request for Additional Information Relief Request 04-GO-002 Catawba, Units 1 and 2, McGuire Unit 2, and Oconee Unit 3 Page 2 of 2 Under Section I of the submittal, the ASME Section XI Category B-A Item Number should be B-1-30, as stated in the question above.
Attachment I A
i i
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_Maximum Scan Position Probe Fixture Vessel Inside Surface Clad not shown Catawba Unit 2 Reactor Pressure Vessel Flange-to-Upper Shell Weld TO FLANGE SURFACE I
(OUTLET NOZZLE TAPER LIMIT)
(INLET NOZZLE TANGENCY LIMIT)
CNS -I?
uCcS-L Please -o urrft-slie-U MeA-"f.
I -
I 3 1-3/4" Maximum Scan Position w---
Probe Fixture Vessel Inside Surface Clad not shown 12" Oconee Unit 3 Reactor Pressure Vessel Flange-to-Upper Shell Weld