ML20057A375

Forwards SE Re Second 10-yr Interval Inservice Insp Program Plan & Associated Requests for Relief from ASME Code Requirements.Nrc Will Not Make Conclusion Re Plan Until After Meeting Scheduled for 930923

ML20057A375
Person / Time
Site:	Davis Besse
Issue date:	08/20/1993
From:	Hannon J Office of Nuclear Reactor Regulation
To:	Storz L CENTERIOR ENERGY
Shared Package
ML20057A376	List: ML20057A375 ML20057A379
References
TAC-M77942, TAC-M79034, NUDOCS 9309140111
Download: ML20057A375 (3)

Text

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UNITED STATES NUCLEAR REGULATORY COMMISSION wAssiworon, o.c. ross-oooi i

gv August 20, 1993 Docket No. 50-346 Mr. Louis F. Storz Vice President, Nuclear - Davis-Besse Centerior Service Company c/o Toledo Edison Company 300 Madison Avenue Toledo, Ohio 43652

SUBJECT:

DAVIS-BESSE NUCLEAR POWER STATION, UNIT 1 - SECOND TEN-YEAR INTERVAL INSERVICE INSPECTION PROGRAM PLAN AND RELIEFS (TAC NOS. M79034 and M77942)

By letter dated October 8, 1991, Toledo Edison Company (the licensee) submitted to the NRC the Second Ten-Year Interval Inservice Inspection (ISI)

Program Plan, Revision 3, and its associated requests for relief from the ASME Code requirements that the licensee determined to be impractical to perform during the Second Ten-Year Inservice Inspection Interval for the Davis-Besse Nuclear Power Station, Unit 1.

The NRC staff, with technical assistance from its contractor, the Idaho National Engineering Laboratory (INEL), has reviewed and evaluated the ISI program plan, requests for relief from impractical requirements and supporting information.

Based on the information submitted, the NRC staff agrees with the conclusions and recommendations presented in the attached Technical Evaluation Report (enclosure 3). However, the staff will not make a conclusion regarding the Second Ten-Year Interval Inservice Inspection Program Plan for Davis-Besse Nuclear Power Station, Unit 1, Revision 3 until after our meeting scheduled for September 23, 1993.

j At the meeting, you should address the following issues for the NRC staff to i

find the Program Plan acceptable and in accordance with the full requirements l

of 10 CFR Part 50.55a(g)(4) and Technical Specification 4.0.5:

(1) Volumetric examinations in lieu of surface examinations of the substituted Examination Category C-F-1 and C-F-2 " thin wall" welds as currently specified in Revision l

3 of the Program Plan, and (2) Examination Category C-C ISI examinations of l

the component supports associated with the " thin wall" welds. NRC review of these issues will be performed under TAC No. M87188. TAC Nos. M79034 and M77942 are closed by this letter.

Furthermore, the NRC staff concludes that relief from the Code requirements for Request for Relief Nos. RR-A1, RR-A2, RR-A3 (partial), RR-A6 AND RR-A7 (with conditions), RR-B1, RR-B2, RR-B3 (with conditions), and RR-B5 l

9309140111 930820

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Mr. Louis F. Storz August 20, 1993 may be granted. Alternative examinations that are authorized are Request Nos.

RR-A4 (with conditions), RR-AS, RR-A7, RR-A9, RR-B3, and RR-Cl (with condi-tions). Request for Relief No. RR-84 is denied, and Requests for Relief Nos.

RR-A8 and RR-B6 are not required. The staff's evaluations and conclusion are contained in the attached Safety Evaluation (enclosure 1) and the TER. A Summary Table of the staff's disposition of the relief requests is included as enclosure 2.

The NRC staff has determined that granting relief, pursuant to 10 CFR 50.55a(a)(3)(1), (a)(3)(ii), and ig)(6)(1), is authorized by law and will not endanger life or property, or the common defense and security and is otherwise in the public interest.

In making this determination, the NRC staff has considered the alternate testing being implemented, compliance resulting in a hardship without a compensating increase in safety, and the impracticality of performing the required testing considering the burden if the requirements were imposed.

Sincerely, ORIGINAL SIGNED BY Marvin M. Mendonca for John N. Hannon, Director Project Directorate III-3 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation

Enclosures:

DISTRIBUTION

1. Safety Evaluation Docket File MRushbrook

2. Table 1 - Summary of fiRC & Local PDRs JHopkins Relief Requests PD3-3 Reading OGC

3. EGG-MS-10328 TER TMurley/FMiraglia EJordan JPartlow TMcLellan cc: See next page ERossi GHill (2)

JLieberman ACRS (10)

JRoe OPA JZwolinski OC/LFDCB JHannon AGody, Jr., ED0

• See Previous Concurrence Region III, DRP OFFICE PD3-3:LA PD3-3:ffi,

• 0GC-WFI PD3-3:PD JBHopbdJbh/bj RBachmann JHannonY NAME MRushbrook DATE T//T/93

/////93 6/7/93 9/ #/93 0FFICIAL RECORD DOCUMENT NAME: g:\\davisbes\\db79034.ISI

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i Mr. Louis F. Storz Davis-Besse Nuclear' Power Station Toledo Edison Company Unit No. I cc:

Mary E. O'Reilly Centerior Energy Corporation Radiological Health Program 300 Madison Avenue Ohio Department of Health j

Toledo, Ohio 43652 Post Office Box 118 l

Columbus, Ohio 43266-0149 Mr. Robert W. Schrauder Attorney General l

Manager, Nuclear Licensing Department of Attorney Toledo Edison Company General 300 Madison Avenue 30 East Broad Street Toledo, Ohio 43652 Columbus, Ohio 43215 l

Mr. James W. Harris, Director Gerald Charnoff, Esq.

Division of Power Generation l

Shaw, Pittman, Potts Ohio Department of Industrial Regulations and Trowbridge P. O. Box 825 i

2300 N Street, N.W.

Columbus, Ohio 4321o Washington, D.C.

20037 l

Regional Administrator, Region III Ohio Environmental Protection Agency U.S. Nuclear Regulatory Commission DERR--Compliance Unit 799 Roosevelt Road ATTN: Zack A. Clayton Glen Ellyn, Illinois 60137 P. O. Box 1049 Columbus, Ohio 43266-0149 Mr. Robert B. Borsum Babcock & Wilcox President, Board of Ottawa Nuclear Power Generation Division County Commissioners 1700 Rockville Pike, Suite 525 Port Clinton, Ohio 43452 Rockville, MD 20852 Resident Inspector State of Ohio U. S. Nuclear Regulatory Commission Public Utilities Commission l

5503 N. State Route 2 180 East Broad Street Oak Harbor, Ohio 43449 Columbus, Ohio 43266-0573 Mr. Murray R. Edelman Mr. James R. Williams 1

Executive Vice President -

State Liaison to the-NRC Power Generation Adjutant General's Department Centerior Service Company Office of Emergency Management Agency l

6200 Oak Tree Boulevard 2825 West Granville Road Independence, Ohio 44101.

Columbus, Ohio 43235-2712 I

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