NG-95-3072, Forwards Rev 0 to MPR-1536, DAEC USI A-46 Seismic Evaluation Rept & Rev 0 to MPR-1545, DAEC USI A-46 Relay Evaluation Rept, Per GL 87-02

Forwards Rev 0 to MPR-1536, DAEC USI A-46 Seismic Evaluation Rept & Rev 0 to MPR-1545, DAEC USI A-46 Relay Evaluation Rept, Per GL 87-02

ML20094L462
Person / Time
Site:	Duane Arnold
Issue date:	11/15/1995
From:	Franz J IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	Russell W NRC (Affiliation Not Assigned), NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20094L463	List: ML20094L467 ML20094L476 NG-95-3072, Forwards Rev 0 to MPR-1536, DAEC USI A-46 Seismic Evaluation Rept & Rev 0 to MPR-1545, DAEC USI A-46 Relay Evaluation Rept, Per GL 87-02
References
REF-GTECI-A-46, REF-GTECI-SC, TASK-A-46, TASK-OR GL-87-02, GL-87-2, NG-95-3072, NUDOCS 9511200256
Download: ML20094L462 (3)

Text

• s IES Util:fres Inc.

200 Forst Street S E.

Po. Box 351 Cedar Rap <ds, IA 52406-0351 Telephone 319 398 8162 Fax 319 398 8192 John F Franz, Jr.

Vce Pmsident, Nuclear November 15,1995 NG-95-3072 Mr. William T. Russell, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission I Attn: Document Control Desk ,

Mail Station PI-37 )

Washington, DC 20555-0001 Subje; Duane Arnold Energy Center Docket No: 50-331 -

Op. License No: DPR-49 Summary Report for Resolution of USI A-46

References:

1) NRC Generic Letter 87-02," Verification of Seismic Adequacy of Mechanical and Electrical Equipment in Operating Reactors, Unresolved Safety issue (USI) A-46," dated February 19,1987

2) NRC Generic Letter 87-02, Supplement 1," Supplemental Safety Evaluation Report No. 2 (SSER No. 2) on SQUG Generic Implementation Procedure, Revision 2, as Corrected on February 14,1992,(GIP-2)," Dated May 22,1992

3) Generic Implementation Procedure (GIP) for Seismic Verification of Nuclear Plant Equipment, Revision 2, Corrected February 14,1992

4) Letter, Franz (IELP) to Murley (NRC), dated September 21,1992, NG-92-3961

5) Letter, Pulsifer (NRC) to Liu (IELP), dated November 25,1992

6) Letter, Pulsifer (NRC) to Liu (IELP), dated August 4,1993 File: A-18, A-10lb

Dear Mr. Russell:

In Reference 1, the NRC Staff set forth the process for resolution of Unresolved Safety Issue (USI) A-46 and encouraged affected nuclear power plant licensees to participate in a generic program. In Reference 2, the Staff requested those licensees to submit a commitment to the Generic Implementation Procedure (GIP-2, Reference 3) prepared by the Seismic Qualification Utility Group (SQUG), a schedule for the implementation of the GIP, and fliiaD{,gport summarizing the results of the USI A-46 program.

i 9511200256 951115 #W PDR ADOCK 05000331 An IES Industnes Company i

P PDR l Release cf 2-G-%

. e Mr. William T. Russell NG-95-3072 November 15,1995 Page 2 By letter to the NRC Staff dated September 21,1992 (Reference 4), IES Utilities committed to implement GIP-2, including the clarifications, interpretations, and  ;

exceptions in SSER-2 (Reference 2), and to communicate to the NRC Staff any significant or programmatic deviation from GIP guidance. IES Utilities agreed to submit the results of the USI A-46 evaluation by November 21,1995. The NRC Staff concurrences in the IES Utilities plan and schedule for resolution of USI A-46 and certain Regulatory Guide 1.97 instruments at the Duane Arnold Energy Center (DAEC) are given in References 5 and 6 respectively.

r This letter forwards the results of the USI A-46 evaluation for the Duane Arnold Energy j

Center. This letter also confirms that no significant or programmatic deviations from the  ;

GIP guidance were made during the USI A-46 resolution process. 1 USI A-46 REPORTS l

Section 1.2.2.8 of GIP-2 requires that a plant-specific Summary Report be submitted to l the NRC staff which includes a proposed schedule for future modification and/or i replacement of those outliers which are yet to be resolved. Further, GIP-2 Section 11.9 l

+

provides guidance for Safe Shutdown Equipment List (SSEL), Relay Evaluation, Seismic '

Evaluation, and Completion Reports. As permitted in GIP-2 Section 119.2, the pertinent results from the SSEL Report are included in the attached Seismic Evaluation (Attachment 1) and the Relay Evaluation (Attachment 2) Reports. To permit both the Seismic and Relay Evaluation Reports to be reviewed independently, some material is contained in both reports (e.g., a description of Safe Shutdown Equipment).

OUTLIERS Outliers, as defined by GIP-2, were identified during the seismic and relay reviews.

These outliers are described in detail in the attached reports.

The schedule for resolution, luture modification and/or replacement of those outliers not yet resolved is provided in tne attached reports. IES Utilities plans to resolve all of the remaining outliers by the end of Refueling Outage 15, currently scheduled for the spring of1998.

i The completion report will be submitted when all the planned actions for resolution of USI A-46 have been completed. That report will be submitted no later than 60 days following start up from Refueling Outage 15.

. = - . - . . . . _ . . . . _ . _ , - . .

O Mr. William T. Russell NG-95-3072 November 15,1995 Page 3 l

This letter is true and accurate to the best of my knowledge and belief.

l IES UTILITIES INC. '

By 4  % i

/ john f. Franz /

Vice President, Nuclear  !

State ofIowa (County) of Linn Signed and sworn to before me on this /j day of /7(/ bent [/A> .1995, by Oo$m onlio ,

DEBRA SCHWENKER

• . mcm ssaoens

= //- / - t h' Notary Public in and for the State ofIowa Commission Expires Attachments: 1) Duane Arnold Energy Center USI A-46 Seismic Evaluation Report

2) Duane Arnold Energy Center USI A-46 Relay Evaluation Report JFF/SRC/src ,

N%wa'LicensingWG95\NG953072 doc l cc: S. Catron w/o Attachments L. Liu w/o Attachments B. Fisher w/o Attachments G. Kelly (NRC-NRR)

II. Miller (Region III)

NRC Resident Office Docu

l <

i  !

i l

\

RECORD OF REVISIONS Revision Summary of Channes Date 0 Original Issue 9/95 l

l t

i CONTENTS Section Eage 1 INTRODUCTION 1-1 Purpose 1-1 Plant Description 1-1 Background 1-1 Report Organization 1-2 2 SAFE SHUTDOWN EARTHQUAKE 2-1 Ground Response Spectra 2-1 In-Structure Response Spectra 2-1 3 PROJECT TEAM 3-1 IES Representatives 3-1 Seismic Capability Engineers 3-1 l Third-Party Auditors 3-1 4 SAFE SHUTDOWN EQUIPMENT LIST (SSEL) 4-1 Safe Shutdown Path Selection 4-1 Safe Shutdown Systems 4-1 Supporting Systems 4-3 Operating Procedures 4-4 Operations Department Review of SSEL 4-5 Safe Shutdown Equipment List and Subsets 4-5 5 MECHANICAL AND ELECTRICAL EQUIPMENT REVIEW 5-1 Summary of Review 5-1 Seismic Capacity vs. Demand 5-1 Equipment Class Descriptions 5-3 Equipment Anchorage 5-5 Seismic Interaction 5-6 Instances of Intent but Not Letter of Caveat Met 5-6 iii I

CONTENTS (Continued)

Eage Section 6-1 6 TANK AND HEAT EXCHANGER REVIEW Summary of Review 6-1 Instances of Intent but Not Letter of Caveat Met 6-2 7-1 7 CABLE AND CONDUIT RACEWAY REVIEW Summary of Raceway Review 7-1 Evaluation of Bounding Samples 7-2 Summary of Outliers 7-2 8-1 8 EQUIPMENT OUTLIERS Summary of Outliers 8-1 Equipment Class Caveat Outliers 8-1 Anchorage Outliers 82 Seismic Interaction Outliers 8-4 Plan and Schedule for Addressing Remaining 8-6 Unresolved Outliers 9-1 9 SIGNIFICANT OR PROGRAMMATIC DEVIATIONS FROM THE GIP 10-1 10 THIRD-PARTY AUDIT Summary of Initial Third-Party Audit 10-1 Summary of Final Third-Party Audit 10-2 11-1 11 REFERENCES APPENDIX A R6 sum 6s for Seismic Capability Engineers A-1 APPENDIX B Composite Safe Shutdown Equ'pment List (SSEL) B-1 APPENDIX C Seismic Review Safe Shutdown Equipment List (SSEL) C-1 APPENDIX D Screening Verification Data Sheets (SVDS) D-1 APPENDIX E Third-Party Audit Reports E-1 iv 1

l l

l TABLES l

l l

Table Eags

'4-1 List of Procedures Used for Safe Shutdown Equipment List Review 4-6 I 5-1 DAEC Seismic Adequacy Review Program Equipment 5-7 l Walkdown Summary l 5-2 Response Spectrum Exceedances for Building Elevations 5-8 Containing SSEL Equipment l

l 5-3 Effective Grade for DAEC Structures 5-9 5-4 Intent but Not Letter of Caveat Summary 5-10 l

7-1 Raceway Outlier Description and Resolution Summary 7-4 l 8-1 Equipment Outlier Description and Resolution Summary 8-7 l

l I

l r

V j i

.