ML20056C479

Requests Addl Info Re Schedule by Which Long Term C/A Would Be Completed,For Licensee Response to GL 92-08, Thermo-Lag 330-1 Fire Barriers

ML20056C479
Person / Time
Site:	Davis Besse
Issue date:	06/16/1993
From:	Hopkins J Office of Nuclear Reactor Regulation
To:	Shelton D CENTERIOR ENERGY
References
GL-92-08, GL-92-8, TAC-M85542, NUDOCS 9306240238
Download: ML20056C479 (3)

Text

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A E UNITED STATES Qj NUCLEAR REGULATORY COMMISSION

%- j? WASHINGTON, D.C. 20555-0001 June 16, 1993 Docket No. 50-346 Mr. Donald C. Shelton Vice President, Nuclear - Davis-Besse Centerior Service Company c/o Toledo Edison Company 300 Madison Avenue Toledo, Ohio 43652

SUBJECT:

DAVIS-BESSE - RESPONSE TO GENERIC LETTER 92-08, " THERM 0-LAG 330-1 FIRE BARRIERS" (TAC NO. M85542)

By letter dated April 16, 1993, you provided a response to Generic Letter (GL) 92-08 for the Davis-Besse Nuclear Power Station (DPNPS). Your resp ~onse states that the documentation and test results provided by Thermal Science, Incorporated (TSI) were relied upon to establish qualification of the Thermo- ,

Lag fire barriers installed at DBNPS and that the fire barrier configurations installed at the plant are consistent with TSI recommendations at that time.

Your response also states that deviations from the tested configuration have been evaluated.

Although Thermo-Lag barriers were evaluated and may have been considered s qualified, the results of recent tests and inspections indicate that further -

actions are now necessary to address fire endurance and ampacity derating of Thermo-Lag barriers. Your response states that appropriate actions to resolve these concerns are being developed through Fire and Ampacity Testing Programs coordinated by NUMARC and that yoL would apply the results of these programs, as they become available, to the Thermo-Lag 330-1 installations at DBNPS. In the interim, compensatory meascres for inoperable barriers are in place and will remain in place until the fire barriers can be declared operable. i Your response to GL 92-08, however, did not provide a schedule by which long term corrective actions would be completed. The NRC staff expects that licensees refererming the NUMARC programs will review the results and, wi. thin 30 days after the completion of a program, inform the NRC of the actions' necessary and the schedule for restoring the operability of these fire barriers including plant specific or unique fire barrier configurations that are not bounded by the NUMARC programs. In accordance with the reporting requirements of GL 92-08, you are also to confirm in writing, completion of the corrective actions.

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-Mr. Donald C. Shelton June 16, 1993 The .information requested by this letter is within the scope of the overall .

burden estimate in Generic Letter 92-08, which was an average of 300 person- ,

hours for'each addressee's response. This request is covered by Office of-Management.and Budget Clearance Number 3150-0011, which expires June 30, 1994.

Sincerely, ORIGINAL SIGNED BY:

Jon B. Hopkins, Senior Project Manager Project Directorate III-3 Division of Reactor Projects - III/IV/V.

Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION

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-> .i Mr. Donald C. Shelton Davis-Besse Nuclear Power Station Toledo Edison Company Unit No. 1 CC; i Mary E. O'Reilly Centerior Energy Corporation Radiological Health Program Ohio Department of Health 300 Madison Avenue Toledo, Ohio 43652 Post Office Box 118 Columbus, Ohio 43266-0149 Mr. Robert W.-Schrauder Attorney-General Manager, Nuclear Licensing Department of Attorney Toledo Edison Company General '

300 Madison Avenue 30 East Broad Street Toledo, Ohio 43652 Columbus, Ohio 43215 i

Mr. James W. Harris, Director Gerald Charnoff, Esq. Division of Power Generation Shaw, Pittman, Potts Ohio Department of Industrial Regulations-and Trowbridge P. O. Box 825-2300 N Street, N.W. Columbus, Ohio 43216 Washington, D.C. 20037 Regional Administrator, Region 111 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 ,

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 Executive Vice President - State Liaison to the'NRC Power Generation Adjutant General's Department ,

Centerior Service Company Office of Emergency Management Agency '

6200 Oak Tree Boulevard 2825 West Granville Road Independence, Ohio. 44101 Columbus, Ohio 43235-2712 i

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