ML20044G955
| ML20044G955 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 05/24/1993 |
| From: | William Reckley Office of Nuclear Reactor Regulation |
| To: | Withers B WOLF CREEK NUCLEAR OPERATING CORP. |
| References | |
| GL-92-08, GL-92-8, TAC-M85625, NUDOCS 9306070089 | |
| Download: ML20044G955 (3) | |
Text
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NUCLEAR REGULATORY COMMISSION o
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WASHINGTON, D. C. 20555 k.....,/
May 24, 1993 Docket No. 50-482 i
Mr. Bart D. Withers President and Chief Executive Officer Wolf Creek Nuclear Operating Corporation Post Office Box 411 Burlington, Kansas 66839 i
Dear Mr. Withers:
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SUBJECT:
WOLF CREEK GENERATING STATION:
RESPONSE-TO GENERIC LETTER 92-08, l
"THERHO-LAG 330-1 FIRE BARRIERS" (TAC NO. M85625)
By letter dated April 16, 1993, Wolf Creek Nuclear Operating Corporation (WCNOC) provided a response to Generic letter (GL).92-08 for Wolf Creek Generating Station. The response states that Thermo-Lag fire barriers installed at Wolf Creek were qualified by the vendor based on the vendor's understanding of the NRC guidance in existence at the time of installation and that most of the fire barrier configurations installed at the plant are consistent with the qualification test assembly configurations..The response also states that deviations from the tested configurations have been evaluated.
Although Thermo-Lag barriers were evaluated and may have been considered qualified, the results of recent tests and inspections indicate that further actions are now necessary to address the fire endurance and ampacity derating of Thermo-Lag barriers. The WCNOC response states that appropriate actions to resolve these concerns are being developed through.an industry program coordinated by the Nuclear Management and Resources Council (NUMARC) and that WCNOC would apply the results.of the industry program, when completed, to the Thermo-Lag 330-1 installations at Wolf. Creek. Compensatory measures for inoperable barriers are in place and will remain in place until the fire barriers can be declared operable. The WCNOC response to GL 92-08,' however, did not provide a schedule by which corrective actions would be completed.
The April 16, 1993, WCNOC response indicated that the actions necessary to restore (or confirm) the operability of these barriers will be based on the results of the NUMARC program. The staff expects that licensees referencing the NUMARC program will review the results and, within 30 days after the completion of the program, inform the NRC of the actions necessary and the schedule for restoring the operability of these fire barriers.
For those plant specific or unique fire barrier configurations that are not bounded by the NUMARC program, please provide within 30 days after receipt of this letter, a description of the process by which the operability of the barriers will be confirmed and a schedule for the completion of these engineering evaluations and/or fire endurance tests for these unique configurations.
The l
schedule for the implementation of any potential barrier upgrades resulting 1
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Mr. Bart D. Withers May 24, 1993' q
l from these evaluations and tests should also be provided.
In addition, the f
reporting requirements of GL 92-08 also request confirmation, in writing, of l
the completion of the corrective actions.
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The information requested in this letter is within the scope of the overall burden estimate in Generic Lettar 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 3159-0011, which expires June 30, 1994.
Sincerely, t
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Original Signed By-Suzanne B1ack l
.for William D. Reckley, Project Manager Project Directorate IV-2 Division of Reactor Projects III/IV/V-Office of Nuclear Reactor Regulation i
cc: See next page DISTRIBUTIOR TDocketsFilet NRC PDR Local PDR PDIV-2 R/F JRoe MVirgilio WJohnson, RGN-IV EPeyton WReckley OGC i
EJordan ACRS (10)
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- See Previous Sheet for Concurrence l
GFFICE PDIV-2/LA PDIV-2/PM*
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- SBlah NW DATE 5/3493 5/19/93 5/19/93 5/19/93 f/sI/93 cm YES/NO YES/N0 YES/NO YES/NO YES/NO 0FFICIAL RECORD COPY FILENAME: B:\\WC9208.LTR
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Mr. Bart D. Withers May 24, 1993 i
cc:
Jay Silberg, Esq.
Mr. Otto Maynard Shaw, Pittman, Potts & Trowbridge Vice President, Plant Operations 2300 N Street, NW Wolf Creek Nuclear Operating Corporation l
Washington, D.C.
20037 P. O. Box 411 l
Burlington, Kansas 66839 l
Mr. C. John Renken l
Policy and Federal Department Regional Administrator, Region IV Missouri Public Service Commission U.S. Nuclear Regulatory Commission P. O. Box 360 611 Ryan Plaza Drive, Suite 1000 Jefferson City, Missouri 65102 Arlington, Texas 76011 Regional Administrator, Region III Mr. Kevin J. Moles U.S. Nuclear Regulatory Commission Manager Regulatory Services 799 Roosevelt Road Wolf Creek Nuclear Operating Corporation Glen Ellyn, Illinois 60137 P. O. Box 411 Burlington, Kansas 66B39 Senior Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 311 Burlington, Kansas 66B39 Chief Engineer i
Utilities Division Kansas Corporation Commission 1500 SW Arrowhead Road Topeka, Kansas 66604-4027 1
Office of the Governor State of Kansas Topeka, Kansas 66612 Attorney General 1st Floor - The Statehouse Topeka, Kansas 66612 County Clerk Coffey County Courthouse Burlington, Kansas 66839 Mr. Gerald Allen Public Health Physicist Bureau of Environmental Health Services Division of Health Kansas Department of Health and Environment 109 SW Ninth Topeka, Kansas 66612
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