ML20212G821

Forwards RAI Re Licensee 951115 Submittal of Summary Rept Re Resolution of USI A-46 for Duane Arnold Energy Ctr. Response Requested within 60 Days of Receipt of Ltr

ML20212G821
Person / Time
Site:	Duane Arnold
Issue date:	10/29/1997
From:	Kelly G NRC (Affiliation Not Assigned)
To:	Leslie Liu IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
References
REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR TAC-M69444, NUDOCS 9711070113
Download: ML20212G821 (4)

Text

'

i October 29, 1997

- Mr. Lee Liu Chairman of the Board and Chief Executive Oflicer

- IES Utilities Inc.

200 First Street, SE.

P.O. Box 351 Cedar Rapids,IA 52406-0351

SUBJECT:

DUANE ARNOLD ENERGY CENTER- REQUEST FOR ADDITIONAL INFOR dATION FOR RESOLUTION OF USI A-46 (M69.444)-

Dear Mr. Liu:

On Novemb r 15,1995, IES Utilities Inc. submitted a summary report for resolution of USI A-46 for the Duane Arnold Energy Center (DAEC). We have reviewed the submittal, and developed the enclosed request for additionalinfornation (RAI). Please provide your response within 60 days so that the NRC can complete its review promptly. If you have any questions about our review, please contact me at (301) 415 3028.

This request for information affects fewer than 10 respondents; therefore, OMB clearance is not required under Pub. L.96-511.

4 Sincerely, GlhNN.Nily, $EYorYr'oject Manager Project Directorate III-3 Div:sior. of Reactor Projects III/IV Office of Nuclear Reactor Regulation Docket No. 50-331

Enclosure:

Request for AdditionalInformation cc w/ encl: See next page Distribution:

Docket File - PUBLIC PDIII-3 R/F ACRS >

GGrant, RIII OGC,015B18 EAdensam (EGAl)

GMarcus HAsher lt t G:\DUANEARN\69444RAI.MPD -

0FFICE PM:PDIII33 E LA:PDIII-3 l E h -

NAME GKelly:/7?df CBoyle DATE 10/M/97 1 10/ /97 0FFICIAL RECORD COPY ,

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FDR ADOCK 05000331 P PDR lllll;lil;ljil,Ill

October 29. 1997

)V =*

Mr. Lee Liu Chairman cf the Board I and CnlefExecutive Officer -

k IES Utilities Inc.

200 First Street, SE.

P.O. Box 351 Cedar Rapids, IA' 52406-0351

SUBJECT:

DUANE ARNOLD ENERGY CENTER- REQUEST FOR ADDITIONAL INFORMATION FOR RESOLUTION OF USI A-46 (M69444)

Dear Mr. Liu:

On November 15,1995, IES Utilities Inc. submitted a summary report for resolution of USI A-46 for the Duane Arnold Energy Center (DAEC). We have reviewed the submittal, and developed the enclosed request for additional information (RAI). Please provide your response within 60 days so that the NRC can complete its review promptly. Ifyou have any questior.2 about our review, please contact me at (301) 415-3028.

This request for information affects fewer than 10 respondents; therefore, OMB clearance is not required under Pub. L.96-511.

Sincerely, Glh[u!N.Nllf, $$iorYr*oject Manager Project Directorate III-3 Division ofReactor ProjectsIII/IV Office ofNuclear Reactor Regulation Docket No. 50-331

Enclosure:

Request for AdditionalInformation cc w/ encl: See next page Distribution:

Docket File PUBLIC PDIII-3 R/F ACRS GGrant, RIII EAdensam (EGA1) HAsher OGC,015B18 GMarcus G:\DUANEARN\69444RAI.WPD OFFICE PM:PDIII33 ]E LA:PDIII-3 l E NAME GKelly: /77d' CBoyle DATE 10/M/97 ' \ 10/ /97 0FFICIAL RECORD C0?Y

\ 0 s

4 Lee Liu Duane Arnold Energy Center IES Utilities Inc.

cc:

Jack Newman, Esquire Kathleen H. Shea, Esquire Morgan, Lewis, & Bocklus 1800 M Street, NW.

Washington, DC 20036 5869 Chairman, Linn County Board of Supervisors Cedar Rapids,IA 52406 IES Utilities Inc.

ATTN: Gary Van Middlesworth Plant Superintendent, Nuclear 3277 DAEC Road Palo,IA 62324 John F. Franz, Jr.

Vice President, Nuclear Duane Arnold Energy Center 3277 DAEC Road Palo,IA 52324 Ken Peveler Manager of Regulatory Performance Duane Arnold Energy Center 3277 DAEC Road Palo,IA 52324 U.S. Nuclear Re0ulatory Commission RoslJent inspectu.'s Office Rural Route #1 Palo,IA 52324 Regional Administrator, Rlll U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532 4531 Parween Baig Utilities Division Iowa Department of Commerce Lucas Office Building,5th floor

Des Moines, IA 50310

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+-eM&hN*N=rWk4WE' M4 449 4W' %@ F-4& 9g 9 ' v- "- ' Y *'

RE00'ST FOR ADDIT 10RAL INFORMATION BfSARDING DUANE ARNOLD ENERGY CENTER (DAEC)

FOR RESOL"IION OF USI A 46

References:

1. DAEC Response to NRC RAI. dated August 8, 1996

2. DAEC Response to NRC RAl. dated July 2,1997

1. On pages 46 and 47 of Addenaum 7 of Reference 1 you have provided a table showing the elevations (in safety related structures) where the indtructure response spectra (IRS) exceeds the corresponding (at the same damping value) reference spectra (i.e.,1.5 times the bounding spectrum). As per GIP 2 (method A1. Table 41). wo believe that you have evaluated the equipment and their anchorages (response 6 in Reference 2) at these locations using the IRS. when their frequqncies are less than 8 Hz. For the equipment with fundamental frequencies above 8 Hz provide the method (s) used to evaluate them when the IRS exceeded the corresponding reference spectra at frequencies above 8 Hz,

2. In evaluating raceway supports, a recent audit of a GIP 2 plant indicated that some licensees (and their consultants) .nay be misusing the " ductile support" definition of Figure 8 7 of GIP 2 to avoid the check for lateral seismic loads, in this context, please provide the following information: (a) the number of supports (percentage of the total number of supports evaluated in the limited analytical review) considered ductile (b) the specific criteria used in this consideration, and (c) the extent to which the supports and their-anchorages will undergo inelastic deformation under the two horizcntal components of the design basis earthquake at the locations of the supports.

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