ML20057C899
| ML20057C899 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 09/24/1993 |
| From: | Hannon J Office of Nuclear Reactor Regulation |
| To: | Leslie Liu IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT |
| Shared Package | |
| ML20057C900 | List: |
| References | |
| TAC-M87666, NUDOCS 9309300125 | |
| Download: ML20057C899 (2) | |
Text
i' September 24,-1993 Docket No. 50-331 DISTRIBUTION Docket File JHannon OPA i
NRC & Local PDRs MRushbrook Mr. Lee Liu PDIII-3 Reading RPulsifer Chairman of the Board and TMurley/FMiraglia 0GC l
Chief Executive Officer JPartlow EJordan i
Iowa Electric Light and Power Company ERossi GHill(2)
P. O. Box 351 JLieberman' ACRS Cedar. Rapids, Iowa 52406 JRoe EDO JZwolinski
Dear Mr. Liu:
PD3-3 Gray File Region III, DRP 5UBJECT:
DUANE ARNOLD ENERGY CENTER - NON-CODE REPAIR OF THE "D" OUTB0ARD MAIN STEAM ISOLATION VALVE (TAC NO. M87666)
By letter dated September 18, 1993, you submitted a request for relief from the American Society of Mechanical Engineers (ASME) Code,Section XI requirements regarding repair of the "D" outboard main steam isolation valve (MSIV). The relief is for a non-ASME Section XI repair of the MSIV.
Your-staff had previously discovered unacceptable linear indications in the valve body subsequent to re-machining to eliminate a taper in the valve bore.
The NRC staff has reviewed your submittal, and as detailed in the attached safety evaluation, the staff has determined that code ^ repair requirements in this case are impractical, as defined under the provisions of-10 CFR 50.55a(g)(6)(1), and that granting of the requested relief is authorized by.
law and will not endanger life or property or the common defense or security and is otherwise in the public interest, given due consideration to the burden that could result if the' code requirements were imposed on the facility.
Therefore, pursuant to 10 CFR 50.55a(g)(6)(i), relief is granted provided a l
radiographic inspection of the MSIV body is accomplished after the next two scheduled refueling outages to ensure adequate structural integrity of the i
l non-Code repair.
l j
Sincerely, ORIGINAL SIGNED BY Jon B. Hopkins for John N. Hannon, Director l
Project Directorate III-3 Division of Reactor Projects - III/IV/V l
Office of Nuclear Reactor Regulation
Enclosure:
As stated cc w/ enclosure:
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1 Mr. Lee Liu Iowa Electric Light and Power Company Duane Arnold Energy Center cc:
Jack Newman, Esquire K:thleen H. Shea, Esquire Newman and Holtzinger 1615 L Street, N.W.
Washington, D.C.
20036 Chairman, Linn County Board of Supervisors l
Cedar Rapids, Iowa 52406 Iowa 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 l
Palo, Iowa 52324 l
Mr. Keith Young l
Manager, Nuclear Licensing l
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 III 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 l
Des Moines, Iowa 50319 l
l
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