ML020540004
| ML020540004 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 02/22/2002 |
| From: | Olshan L NRC/NRR/DLPM/LPD2 |
| To: | Mccollum W Duke Energy Corp |
| Olshan L N, NRR/DLPM, 415-1419 | |
| References | |
| TAC MB2643, TAC MB2644, TAC MB2645 | |
| Download: ML020540004 (4) | |
Text
February 22, 2002 Mr. William R. McCollum, Jr.
Vice President, Oconee Site Duke Energy Corporation 7800 Rochester Highway Seneca, SC 29672
SUBJECT:
OCONEE NUCLEAR STATION, UNITS 1, 2 AND 3 - RESPONSE TO BULLETIN 2001-01, CIRCUMFERENTIAL CRACKING 0F REACTOR PRESSURE VESSEL HEAD PENETRATION NOZZLES (TAC NOS. MB2643, MB2644 AND MB2645)
Dear Mr. McCollum:
On August 3, 2001, the staff issued Bulletin 2001-01, Circumferential Cracking of Reactor Pressure Vessel Head Penetration Nozzles, to the industry requesting that addressees provide information related to the structural integrity of the reactor pressure vessel head penetration (VHP) nozzles for their respective facilities, including the extent of VHP nozzle leakage and cracking that has been found to date, the inspections and repairs that have been undertaken to satisfy applicable regulatory requirements, and the basis for concluding that their plans for future inspections will ensure compliance with applicable regulatory requirements at their respective pressurized water reactor plantss. You were requested to respond to Items 1 and 2 of the Bulletin within 30 days of its issuance.
You provided your Bulletin response by letter dated August 28, 2001, indicating that your plants are classified as having previously identified primary water stress corrosion cracking (PWSCC) in the VHP nozzles at your plants. The staff finds that you have provided the requested information. Your Bulletin response stated that you plan to perform a qualified visual examination of 100 percent of the VHP nozzles at your next refueling outage, consistent with the description for such an examination provided in Bulletin 2001-01. Although the proposed inspection method and schedule described in your Bulletin response are not consistent with the discussion in the Bulletin for plantss which have identified PWSCC in their VHP nozzles, the staff has concluded that the most recent qualified visual examination of 100 percent of the VHP nozzles performed at your plants, in conjunction with your inspection plans, provides reasonable assurance that the public health and safety will be maintained through the next inspection at your plants. Since the proposed inspection scope and schedule described in your response were integral to the staffs finding, it is the staffs expectation that you will submit a revised response to the Bulletin if you make any substantive changes to the schedule and/or scope of future inspections for your plants. If warranted by such changes, the staff will reevaluate this issue for Oconee Nuclear Station, Units 1, 2 and 3.
Addressees are reminded that Item 5 of the Bulletin requested the following information within 30 days after plants restart following the next refueling outage:
- a. a description of the extent of VHP nozzle leakage and cracking detected at your plants, including the number, location, size, and nature of each crack detected;
Mr. W. R. McCollum b. if cracking is identified, a description of the inspections (type, scope, qualification requirements, and acceptance criteria), repairs, and other corrective actions you have taken to satisfy applicable regulatory requirements. This information is requested only if there are any changes from prior information submitted in accordance with this bulletin.
Sincerely,
/RA/
Leonard N. Olshan, Senior Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287 cc: See next page
ML020540004 OFFICE PM:PDII-1 LA:PDII-1 EMCB/BC (A)SC:PDII-1 NAME LOlshan CHawes WBateman RLaufer DATE 02/12/02 02/12/02 02/13/02 02/14/02
4 cc:
Ms. Lisa F. Vaughn Legal Department (PBO5E)
Duke Energy Corporation 422 South Church Street Charlotte, North Carolina 28201-1006 Anne W. Cottingham, Esquire Winston and Strawn 1400 L Street, NW Washington, DC 20005 Manager, LIS NUS Corporation 2650 McCormick Drive, 3rd Floor Clearwater, Florida 34619-1035 Senior Resident Inspector U. S. Nuclear Regulatory Commission 7812B Rochester Highway Seneca, South Carolina 29672 Mr. Henry Porter, Director Division of Radioactive Waste Management Bureau of Land and Waste Management Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201-1708 Mr. Michael A. Schoppman Framatome ANP 1911 North Ft. Myer Drive Suite 705 Rosslyn, VA 22209 Mr. L. E. Nicholson Compliance Manager Duke Energy Corporation Oconee Nuclear Site 7800 Rochester Highway Seneca, South Carolina 29672 Ms. Karen E. Long Assistant Attorney General North Carolina Department of Justice P. O. Box 629 Raleigh, North Carolina 27602 Mr. C. Jeffrey Thomas Manager - Nuclear Regulatory Licensing Duke Energy Corporation 526 South Church Street Charlotte, North Carolina 28201-1006 Mr. Richard M. Fry, Director Division of Radiation Protection North Carolina Department of Environment, Health, and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609-7721 Mr. Peter R. Harden, IV VP-Customer Relations and Sales Westinghouse Electric Company 5929 Carnegie Blvd.
Suite 500 Charlotte, North Carolina 28209