ML20056C485
| ML20056C485 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 06/16/1993 |
| From: | Pulsifer R Office of Nuclear Reactor Regulation |
| To: | Leslie Liu IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT |
| References | |
| GL-92-08, GL-92-8, TAC-M85547, NUDOCS 9306240258 | |
| Download: ML20056C485 (3) | |
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UNITED STATE!S NUCLEAR REGULATORY COMMISSION
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WASHINGTON, D.C. 20n55-0001 June 16, 1993 Docket No. 50-331 i
i Mr. Lee Liu Chairman of the Board and Chief Executive Officer Iowa Electric Light and Power Company Post Office Box 351 Cedar Rapids, Iowa 52406
Dear Mr. Liu:
SUBJECT:
DUANE ARN0LD ENERGY CENTER - RESPONSE TO CENERIC LETTER 92-08,
" THERM 0-LAG 330-1 FIRE BARRIERS" (TAC NO. M85547)
By letter dated April 5, 1993, you provided a response to Generic Letter (GL) 92-08 for Duane Arnold Energy Center (DAEC).
Your response statt.s that the Thermo-Lag fire barriers installed at DAEC were qualified by the vendor based on the vendor's understanding of the NRC guidance in existence at the time of installation and that the fire barrier configurations installed at the plant are consistent with the qualification test assembly configurations.
Your response also states that installations at DAEC were in accordance with vendor guidelines at the time of installation.
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 fire endurance and upacity-derating of Thermo-Lag barriers.
Your response states that appropriate actions to resolve these concerns are being developed through an industry program coordinated by NUMARC and you would apply the results of the industry program, when completed, to the Thermo-Lag 330-1 installations at DAEC. Compensatory measures for inoperable barriers are in place and will romain in place until the fire barriers can be declared operable.
Your response to GL 92-08, however, did not provide a schedule by which corrective actions would be completed, in your response to GL 92-08 you indicated that the actions necessary to restore the operability of these barriers will be based on the-results of the f
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 including plant specific or unique fire barrier configurations that are not bound by the NUMARC program.
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. Lee Liu 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:
Robert M. Pulsifer, Project Manager Project Directorate III-3 Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION Docket 50-331 NRC& Local PDRs PDIII-3 r/f PDIII-3' Gray File JRoe JZwolinski JHannon CMcCracken AMasciantonio CBerlinger EGreenman, RIII ACRS(10)
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Mr. Lee Liu lowa Electric Light and. Power Company Duane Arnold Energy Center CC:
1 Jack Newman, Esquire Kathleen H. Shea, Esquire Newman and Holtzinger 1615 L Street, N.W.
Washington, D.C.
20036 Chairman, Linn County Board of Supervisors Cedar Rapids, Iowa 52406 lowa Electric Light and Power Company ATTN:
David L. Wilson Plant Superintendent, Nuclear 3277 DAEC Road Palo, Iowa 52324 Mr. John F. Franz, Jr.
Vice President, Nuclear Duane Arnold Energy Center 3277 DAEC Road Palo, Iowa 52324 Mr. Keith Young Manager, Nuclear Licensing Duane Arnold Energy Center 3277 DAEC Road Palo, Iowa 52324 U.S. Nuclear Regulatory Commission Resident Inspector's Office Rural Route #1 Palo, Iowa 52324 Regional Administrator, Region Ill U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137
.Mr. Stephen N. Brown Utilities Division Iowa Department of Commerce Lucas Office Building, 5th Floor Des Moines, Iowa 50319
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