ML081280776
| ML081280776 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 05/08/2008 |
| From: | Nadiyah Morgan NRC/NRR/ADRO/DORL/LPLI-1 |
| To: | Sena P FirstEnergy Nuclear Operating Co |
| Morgan N, NRR/DLPM, 415-3650 | |
| References | |
| TAC MD7489 | |
| Download: ML081280776 (6) | |
Text
May 8, 2008 Mr. Peter P. Sena III Site Vice President FirstEnergy Nuclear Operating Company Beaver Valley Power Station Mail Stop A-BV-SEB1 P.O. Box 4, Route 168 Shippingport, PA 15077
SUBJECT:
BEAVER VALLEY POWER STATION, UNIT NO. 2 - STAFF EVALUATION RE:
STEAM GENERATOR TUBE INSPECTION REPORT (TAC NO. MD7489)
Dear Mr. Sena:
By letter dated February 2, 2007, as supplemented by letter dated March 26, 2008, FirstEnergy Nuclear Operating Company, (the licensee) submitted information summarizing the results of the 2006 steam generator tube inspections for the twelfth refueling outage (2R12) at Beaver Valley Power Station, Unit No. 2 (BVPS-2), in accordance with Technical Specification (TS) 6.9.7. In addition, the licensee provided clarifying information regarding the inspection results in a teleconference on April 15, 2008.
The U.S. Nuclear Regulatory Commission (NRC) staff has completed its review of these reports and concludes that the licensee provided the information required by their TS and that no additional follow-up is required at this time. The NRC staffs review of the report is enclosed.
Please contact me at (301) 415-1016, if you have any questions regarding this issue.
Sincerely,
/RA/
Nadiyah S. Morgan, Project Manager Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-412
Enclosure:
As stated cc: See next page
May 5, 2008 Mr. Peter P. Sena III Site Vice President FirstEnergy Nuclear Operating Company Beaver Valley Power Station Mail Stop A-BV-SEB1 P.O. Box 4, Route 168 Shippingport, PA 15077
SUBJECT:
BEAVER VALLEY POWER STATION, UNIT NO. 2 - STAFF EVALUATION RE:
STEAM GERNERATOR TUBE INSPECTION REPORT (TAC NO. MD7489)
Dear Mr. Sena:
By letter dated February 2, 2007, as supplemented by letter dated March 26, 2008, FirstEnergy Nuclear Operating Company, (the licensee) submitted information summarizing the results of the 2006 steam generator tube inspections for the twelfth refueling outage (2R12) at Beaver Valley Power Station, Unit No. 2 (BVPS-2), in accordance with Technical Specification (TS) 6.9.7. In addition, the licensee provided clarifying information regarding the inspection results in a teleconference on April 15, 2008.
The U.S. Nuclear Regulatory Commission (NRC) staff has completed its review of these reports and concludes that the licensee provided the information required by their TS and that no additional follow-up is required at this time. The NRC staffs review of the report is enclosed.
Please contact me at (301) 415-1016, if you have any questions regarding this issue.
Sincerely,
/RA/
Nadiyah S. Morgan, Project Manager Plant Licensing Branch I-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-412
Enclosure:
As stated cc: See next page DISTRIBUTION:
PUBLIC LPLI-1 R/F RidsNrrDorlLplI-1 NMorgan RidsOgcRp RidsNrrDciCsgb AJohnson KKarwoski NrrRidsDorlDpr RidsRegionIMailCenter RidsNrrLASLittle RidsAcrsAcnwMailCenter DWerkheiser, R1 JNoggle, R1 JWhite, RI PKaufman, RI ADAMS Accession Number: ML081280776 OFFICE LPLI-1/PM LPLI-1/LA LPLI-1/BC NAME NMorgan SLittle MKowal DATE 5/08/08 5/08/08 5/08/08 OFFICIAL RECORD COPY
Beaver Valley Power Station, Unit Nos. 1 and 2 cc:
Joseph J. Hagan President and Chief Nuclear Officer Manager, Fleet Licensing FirstEnergy Nuclear Operating Company FirstEnergy Nuclear Operating Company Mail Stop A-GO-19 Mail Stop A-GO-2 76 South Main Street 76 South Main Street Akron, OH 44308 Akron, OH 44308 James H. Lash Ohio EPA-DERR Senior Vice President of Operations ATTN: Zack A. Clayton and Chief Operating Officer P.O. Box 1049 FirstEnergy Nuclear Operating Company Columbus, OH 43266-0149 Mail Stop A-GO-14 76 South Main Street Director, Fleet Regulatory Affairs Akron, OH 44308 FirstEnergy Nuclear Operating Company Mail Stop A-GO-2 Danny L. Pace 76 South Main Street Senior Vice President, Fleet Engineering Akron, Ohio 44308 FirstEnergy Nuclear Operating Company Mail Stop A-GO-14 Manager, Site Regulatory Compliance 76 South Main Street FirstEnergy Nuclear Operating Company Akron, OH 44308 Beaver Valley Power Station Mail Stop A-BV-A Jeannie M. Rinckel P.O. Box 4, Route 168 Vice President, Fleet Oversight Shippingport, PA 15077 FirstEnergy Nuclear Operating Company Mail Stop A-GO-14 Commissioner James R. Lewis 76 South Main Street West Virginia Division of Labor Akron, OH 44308 749-B, Building No. 6 Capitol Complex Paul A. Harden Charleston, WV 25305 Vice President, Nuclear Support FirstEnergy Nuclear Operating Company Director, Utilities Department Mail Stop A-GO-14 Public Utilities Commission 76 South Main Street 180 East Broad Street Akron, OH 44308 Columbus, OH 43266-0573 David W. Jenkins, Attorney Director, Pennsylvania Emergency FirstEnergy Corporation Management Agency Mail Stop A-GO-15 2605 Interstate Dr.
76 South Main Street Harrisburg, PA 17110-9364 Akron, OH 44308
Beaver Valley Power Station, Unit Nos. 1 and 2 (continued) cc:
Dr. Judith Johnsrud Environmental Coalition on Nuclear Power Sierra Club 433 Orlando Avenue State College, PA 16803 Director Bureau of Radiation Protection Pennsylvania Department of Environmental Protection Rachel Carson State Office Building P.O. Box 8469 Harrisburg, PA 17105-8469 Mayor of the Borough of Shippingport P.O. Box 3 Shippingport, PA 15077 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 298 Shippingport, PA 15077 Ms. Carol OClaire Chief, Radiological Branch Ohio Emergency Management Agency 2855 West Dublin-Granville Road Columbus, OH 43235-2206 Mr. Dan Hill Chief, Radiological Health Program West Virginia Department of Health and Human Resources Capitol & Washington Streets 1 Davis Square Suite 200 Charleston, WV 25305-0360
REVIEW OF THE 2006 STEAM GENERATOR TUBE INSERVICE INSPECTION REPORTS BEAVER VALLEY POWER STATION, UNIT NO. 2 DOCKET NUMBER 50-412 By letter dated February 2, 2007 (Agencywide Documents Access and Management Systems (ADAMS) Accession No. ML070360529), as supplemented by letter dated March 26, 2008 (ADAMS Accession No. ML080920737), FirstEnergy Nuclear Operating Company (the licensee),
submitted information summarizing the results of the 2006 steam generator (SG) tube inspections for the twelfth refueling outage (2R12) at Beaver Valley Power Station, Unit No. 2 (BVPS-2), in accordance with Technical Specification (TS) 6.9.7. The licensee also provided clarifying information regarding the inspection results in a teleconference on April 15, 2008. In addition to this report, the U.S. Nuclear Regulatory Commission (NRC) staff summarized the October 13, 2006 conference call regarding the ongoing 2006 SG tube inspection activities at BVPS-2 by letter dated November 9, 2006 (ADAMS Accession No. ML063100291).
The SGs at BVPS-2 are Westinghouse model 51 SGs. Each SG contains 3,388 mill annealed Alloy 600 tubes. Each tube has a nominal outside diameter (OD) of 0.875-inch and a nominal wall thickness of 0.050-inch. The tubes are supported by a number of carbon steel tube support plates and Alloy 600 anti-vibration bars. The tubes were roll expanded at both ends for the full length of the tubesheet. The entire length of tube within the tubesheet was shot-peened on both the hot and cold leg side of the SG, prior to operation. In addition, the U-bend region of the small radius tubes were in-situ stress relieved prior to operation.
The licensee provided the scope, extent, methods, and results of their SG tube inspections in the documents referenced above. In addition, the licensee described corrective actions (i.e.,
tube plugging or repair) taken in response to the inspection findings.
After review of the information provided by the licensee, the NRC staff has the following comments/observations:
- Inspections of portions of the feedwater header area and the moisture separation equipment were performed in SGs B and C. These inspections were performed to establish a baseline condition prior to a power uprate. Minor erosion was observed in a few areas (e.g., feedwater header at the J-tube entrance in SG B).
Similar inspections are scheduled in SG A during 2R13 (Spring 2008).
- Two tubes were plugged due to anomalous eddy current indications in the U-bend regions. The tubes were located in SG A at Row 4 Column 58 (R4C58) and in SG B at R26C50. Consensus among the eddy current analysts on whether the indications were a result of a flaw (or some other condition such as scale buildup) was not achieved. The sizes of these indications were small. As a result, even if the indications were flaws, their sizes would not have compromised the integrity of the tube. These tubes were administratively removed from service (i.e., plugged).
Enclosure
Based on a review of the information provided by the licensee, the NRC staff concludes that the licensee provided the information required by their TSs. In addition, the SG tube inspections at BVPS-2 appear to be consistent with the objective of detecting potential tube degradation and the inspection results appear to be consistent with industry operating experience at similarly designed and operated units.