ML20196J211

Forwards SE Concluding Licensee USI A-46 Implementation Program Meets Purpose & Intent of Criteria in Generic Implementation Procedure for Seismic Verification of NPP Equipment, Rev 2

ML20196J211
Person / Time
Site:	Millstone
Issue date:	06/30/1999
From:	Eaton R NRC (Affiliation Not Assigned)
To:	Necci R NORTHEAST NUCLEAR ENERGY CO.
Shared Package
ML20196J214	List: ML20196J211 ML20196J219
References
REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR GL-87-02, GL-87-2, TAC-M69459, NUDOCS 9907070187
Download: ML20196J211 (5)

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NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20566-0001 4 ,o 4***** June 30, 1999 j

. Mr. R. P. Necci - Vice President .

Nuclear Oversight and Regulatory Affairs c/o Mr. David A.' Smith .

Northeast Nuclear Energy Company P. O. Box 128 Waterford, CT 06385

SUBJECT:

, PLANT-SPECIFIC SAFETY EVALUATION REPORT FOR USl A-46 PROGRAM

- lMPLEMENTATION AT MILLSTONE NUCLEAR POWER STATION, UNIT NO. 2 (TAC NO. M69459)

Dear Mr. Necci:

Enclosed is the staff's safety evaluation (SE) of the Northeast Nuclear Energy Company's

. (NNECO's) USl A-46 Implementation program at the Millstone Unit 2 plant. The licensee's USl A-46 program at Millstone Unit 2 was established in response to Generic Letter 87-02,

" Verification of Seismic Adequacy of Mechanical and Electrical Equipment in Operating

- Reactors," through a 10 CFR 50.54(f) letter. The staff concludes that the licensee's USl A-46

. implementation program has, in general, met the purpose and intent of the criteria in the

" Generic implementation Procedure for Seismic Verification of Nuclear Power Plant Equipment," Revision 2 (GIP-2) and the staff's SSER No. 2 for the resolution of USI A-46. The staff has determined that the licensee's corrective actions and completed physical modifications for resolution of outliers will result in safety enhancements which, in certain aspects, are beyond

- the original licensing basis, and, as a result, provide sufficient basis to close the USl A-46 review at the facility. The staff also concludes that the licensee's implementation program to resolve USl A-46 at the facility has adequately addressed the purpose of the 10 CFR 50.54(f) request. Licensee activities related to the USl A-46 implementation are subject to NRC inspection.

- In the intake structure the amplification factor at 8 and 9 Hz is too high to justify the use of Method A.1.for the comparison of seismic demand to seismic capacity. Therefore, the licensee should classify any SSEL component in the intake structure having a fundamental natural frequency in the range of 8 to 9 Hz, for which Method A.1 was used, as an outlier.

The seismic margin assessment methodology, described in the EPRI report, NP-6041 may j yield analytical results which are not as conservative as those which could be obtained by following GlP-2 guidelines. The licensee is requested to verify in its A-46 completion letter that / j such methodology has not been used for equipment outlier resolutions.

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' This completes the staff review and closes TAC No. M69459.

Sincerely, g'[jib f honald B. Eaton, Senior Project Manager, Section 2 Project Directorate I

' Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-336,

Enclosure:

As stated cc w/ encl: See next page -

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2 This compietes the staff review and closes TAC No. M69459.

Sincerely, ORIGINAL SIGNED BY:

Ronald B. Eaton, Senior Project Manager, Section 2 Project Directorate i Division of Licensing Project Management Office of Nuclear Reactor Regulation ,

Docket No. 50 336

Enclosure:

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l Mill:tcna Nuclear Pow:r Station Unit 2 cc:

Ms. L. M. Cuoco Ernest C. Hadley, Esquire Senior Nuclear Counsel 1040 B Main Street Northeast Utilities Service Company P.O. Box 549 P. O. Box 270 West Wareham, MA 02576 Hartford, CT 06141-0270 Mr. R. P. Necci Edward L. Wilds, Jr., Ph.D. Vice President - Nuclear Oversight Director, Division of Radiation and Regulatory Affairs Department of Environmental Protection Northeast Nuclear Energy Company 79 Elm Street P. O. Box 128 Hartford, CT 06106-5127 Waterford, CT 06385 Regional Administrator, Region i Mr. J. T. Carlin U.S. Nuclear Regulatory Commission Vice President - Human Services 475 Allendale Road Northeast Utilities Service Company King of Prussia, PA 19406 P. O. Box 128 Waterford, CT 06385 First Selectmen Town of Waterford Mr. Allan Johanson, Assistant Director 15 Rope Ferry Road Office of Policy and Management Waterford, CT 06385 Policy Development and Planning Division Mr. Wayne D. Lanning, Director 450 Capitol Avenue - MS# 52ERN Millstone Inspections P. O. Box 341441 Office of the Regional Administrator Hartford, CT 06134-1441 475 Allendale Road King of Prussia, PA 19406-1415 Mr. M. H. Brothers Vice President - Millstone Operations Charles Brinkman, Manager Northeast Nuclear Energy Company Washington Nuclear Operations P.O. Box 128 j ABB Combustion Engineering Waterford, CT 06385 12300 Twinbrook Pkwy, Suite 330 Rockville, MD 20852 Mr. J. A. Price Director - Unit 2 Operations Senior Resident inspector Northeast Nuclear Energy Company Millstone Nuclear Power Station P.O. Box 128 c/o U.S. Nuclear Regulatory Commission Waterford, CT 06385 P.O. Box 513 Niantic, CT 06357 Mr. L. Olivier Senior Vice President and Chief Mr. F. C. Rothen Nuclear Officer- Millstone Vice President - Nuclear Work Services Northeast Nuclear Energy Company Northeast utilities Service Company P.O. Box 128 P. O. Box 128 Waterford, CT 06385 Waterford, CT 06385 l

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I Millstons Nuctrar Pow:r St: tion Unit 2 cc:

Citizens Regulatory Commission Ms. Nancy Burton ATTN: Ms. Susan Perry Luxton 147 Cross Highway 180 Great Neck Road Redding Ridge, CT 00870 Waterford, CT 06385 Deborah Katz, President Citizens Awareness Network P. O. Box 83 Shelburne Falls, MA 03170 Ms. Terry Concannon Co-Chair Nuclear Energy Advisory Council Room 4100 Legislative Office Building Capitol Avenue Hartford, CT 06106 Mr. Evan W. Woollacott Co-Chair Nuclear Energy Advisory Council 128 Terry's Plain Road Simsbury, CT 06070 Little Harbor Consultants, Inc.

Millstone -ITPOP Project Office P. O. Box 0630 )

Niantic, CT 06357-0630 Attorney Nicholas J. Scobbo, Jr.

Ferriter, Scobbo, Caruso, Rodophele, PC 75 State Street,7th Floor Boston, MA 02109 Mr. D. B. Amerine Vice President - Engineering Services Northeast Nuclear Energy Company P. O. Box 128 Waterford, CT 06385 Mr. D. A. Smith Manager - Regulatory Affairs Northeast Nuclear Energy Company P. O. Box 128 Waterford, CT 06385 I I

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