ML17326A142
| ML17326A142 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 09/17/1999 |
| From: | Powers R INDIANA MICHIGAN POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML17326A143 | List: |
| References | |
| C0999-11, NUDOCS 9909240197 | |
| Download: ML17326A142 (12) | |
Text
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REGULAT Y INFORMATION DXSTRXBUTIO SYSTEM (RXDS)
ACCESSION NBR:9909240197 DOC.DATE: 99/09/17 NOTARIZED: YES DOCKET FACIL:50-315 Donald C.
Cook Nuclear Power Plant, Unit 1, Indiana M
05000315 50-.316 Donald C.
Cook Nuclear Power Plant, Unit 2, Indiana M
05000316 AUTH.NAME AUTHOR AFFILIATION
'OWERS,R.P.
RECXP.NAME RECIPIENT AFFILIATION Records Management Branch (Document Control Desk)
SUBUECT: Application for amends to licenses DPR-58
& DPR-74,to allow C
credit of rod cluster control assemblies for cold leg large break LOCA subcriticality.TS pages S non-proprietary A
versions of WCAP-15246 encl. Proprietary version withheld.
T DZSTRZBUTZON CODE:
APOZD COPZES RECEZVED:LTR
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TITLE: Proprietary Review Distribution - Pre Operating L'cense
& Operating R E NOTES:
INTERNAL:
RECIPIENT ID CODE/NAME BARNHlLL E CENTE 01 COPIES RECIPIENT LTTR ENCL ID CODE/NAME 1
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NOTE TO ALL "RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION CONTACT THE DOCUMENT CONTROL DESK (DCD)
ON EXTENSION 415-2083 TOTAL NUMBER OF. COPIES REQUIRED:
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One Cook Rani 8'dgneL M491 06 616 465 6901 INQMNA NICNICiQN FQWM September 17, 1999 C0999-11 10 CFR 50.90 Docket Nos.:
50-315 50-316 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Stop 0-P 1-17 Washington, DC 20555-0001 Donald C. Cook Nuclear Plant Units 1 and 2 LICENSE AMENDMENTREQUEST FOR CREDIT OF ROD CLUSTER CONTROL ASSEMBLIES FOR COLD LEG LARGE BREAKLOSS-OF-COOLANTACCIDENTSUBCRITICALII'Y Pursuant to the requirements of 10 CFR 50.90, Indiana Michigan Power Company (I&M), the licensee for Donald C. Cook Nuclear Plant (CNP), Units 1 and 2, proposes to amend Facility Operating Licenses DPR-58 and DPR-74.
I&M proposes to allow credit in the applicable subcriticality analysis for the negative reactivity provided by insertion of the rod cluster control assemblies (RCCAs) during realignment from a cold leg recirculation to a hot leg recirculation configuration.
This realignment, which is referred to as hot leg switchover (I-ILSO), is performed following a loss-of-coolant accident (LOCA).
This methodology change requires NRC staff review and approval per the provisions of 10 CFR 50.90. The proposed change affects the Bases for Technical Specification (T/S) 3/4.5.5, "Refueling Water Storage Tank," and several sections of the Updated Final Safety Analysis Report (UFSAR).
I&M requests NRC review and approval of the proposed post-LOCA
~ subcriticality methodology change to allow credit for RCCA insertion, as supported by the attached Westinghouse Electric Company (WEC) analyses (WCAP-15245, a proprietary version and WCAP-15246, a non-proprietary version).
Approval is requested by December 10, 1999, to support restart of Unit 2. The same approval willalso apply to the restart ofUnit 1 at a later date.
Once approved, this methodology change ~ill be used for HLSO subcriticality A 4 li '.lL 99011i240i9'7 911109i7 t
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U. S. Nuclear Regulatory Commission Page 2 C0999-11 analyses for the CNP Units.
The use of this methodology would also preclude the need to perform HLSO criticality analyses on a cycle-specific basis because crediting RCCA insertion would provide a bounding analysis, which could be confirmed each reload.
Attachment 1 provides a detailed description, a probabilistic risk assessment review, and an emergency operating procedures (EOPs) impact assessment to support the proposed methodology change.
Attachments 2A and 2B provide marked-up T/S Bases pages for Unit 1 and Unit 2, respectively.
Attachments 3A and 3B provide the proposed T/S Bases pages with the changes incorporated for Unit 1
and Unit 2, respectively.
Attachment 4
describes the evaluation performed in accordance with 10CFR50.92(c),
which concludes that the proposed change does not involve a significant hazard. provides the environmental assessment. contains the WEC report WCAP-15245, "Control Rod Insertion Following a Cold Leg LBLOCA, D. C. Cook, Units 1 and 2." This report provides analyses that show the control rods can be inserted and credited for criticality control at CNP, Units 1 and 2, under cold leg LBLOCA conditions.
WCAP-15245 is considered proprietary to WEC.
As such, an affidavit for withholding from public disclosure is provided as part of Attachment 6.
A non-proprietary version of the WCAP (WCAP-15246) is provided in Attachment7.
Attachment 8 provides I&M responses to NRC questions from a May 6, 1999, public meeting to discuss hot leg nozzle gap issues for restart.
I&Mhas reviewed the Westinghouse methodology used in WCAP-15245 and concludes that the analysis demonstrates that RCCAs can be inserted following the cold leg LBLOCA, and that the resulting negative reactivity credit can be applied to the HLSO subcriticality analysis.
In addition, I&M contracted Scientech, Inc. to perform an independent review of WCAP-15245 for its technical approach, assumptions, analysis methods, and results.
The Scientech review also evaluated conformance with industry safety practices and included a comparison with Babcock & Wilcox (B&W)/Framatome Technologies, Inc.
LOCA analysis methodology, which also credits control rod insertion during a LBLOCA. Scientech, Inc. concluded that the Westinghouse methodology was representative of the best current industry practices for determining fuel assembly response to LOCA and seismic loads, and conservatively demonstrates that, for a design basis or leak-before-break cold leg break, control rod insertion will not be impaired.
I&Mconcurs with the Scientech assessment of WCAP-15245. The Scientech review report is provided as Attachment 9.
U. S. Nuclear Regulatory Commission Page 3 C0999-11 Copies of this letter and its attachments are being transmitted to the Michigan Public Service Commission and Michigan Department of Public Health, in accordance with the requirements of 10 CFR 50.91.
Should you have any questions, please contact Mr. Robert C. Godley, Director of Regulatory Affairs, at (616) 466-2698.
Sincerely, R. P. Powers Vice President SWORN TO ANDSUBSCRIBED BEFORE ME T IS DAYO 1999 Notary P blic y Commission Expires
'Idms PATRlt.'lh..
ggAR'y PUBLIC BEPr(IEN CO IllCH N EXPIRES t9IQSEII ~ S ~ 20OI Attachments
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A. C. Bakken, III,w/attachments J. E. Dyer, w/attachments MDEQ - DW&RPD, w/attachments NRC Resident Inspector, w/attachments R. Whale, w/attachments
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U. S. Nuclear Regulatory Commission Page 4 bc:
T. P. Beilman, w/attachments FOLIO, w/attachments D. J. Garner/J. B. Kingseed R. C. Godley/G. P. Arent/W. T. MacRae/R. Gaston W. G. Harland D. M. Miller/Winstonk Strawn, w/attachments M. W. Rencheck/S. A. Greenlee J. F. Stang, Jr., - NRC Washington, DC, w/attachments V. D. VanderBurg/G. J. Hill
Westinghouse Electric Company LLC Box 355 Pittsburgh Pennsylvania 15230.0355 NSD-SAE-ESI-99-311 August 4, 1999 Mr. Jeb Kingseed American Electric Power 500 Circle Drive Buchanan, Michigan 49107 AMERICANELECTRIC POWER DONALDC. COOK NUCLEAR PLANT UNITS 1 AND 2 Transmittal of WCAP15245 and WCAP15246
Dear Mr. Kingseed:
This letter transmits one copy of proprietary (WCAP15245) and nonproprietary (WCAP15246) versions of "Control Rod Insertion Following a Cold Leg LBLOCA, D. C.Cook, Units 1 and 2,"
dated May, 1999 for your submittal to the NRC for review and approval.
In addition to the proprietary and nonproprietary WCAPs, there are four other enclosures for your use:
1.
Information which should be included in your NRC transmittal letter 2.
Proprietary Information Notice to be attached to your NRC transmittal letter 3.
Copyright Notice to be attached to your NRC transmittal letter 4.
Westinghouse letter "Application for Withholding Proprietary Information from Public Disclosure" (CAW-99-1348) with AffidavitCAW-99-1348.
Please transmit the original of Item 4 to the NRC in your transmittal.
If you have any questions, please do not hesitate to contact us.
Very truly yours, Michael M. Corletti Engineering Services Integration Enclosures
American Electric Power Letter for Transmiual to the iNRC The following paragraphs should be included in your letter to the NRC 1.
I copy of WCAP 15245 "Control Rod.Insertion Following a Cold Leg LBLOCA, D. C. Cook.
Units 1 and 2,'Proprietary), May, 1999.
2.
I copy of WCAP 15246 "Control Rod Insertion Following a Cold Leg LBLOCA, D. C. Cook, Units 1 and 2," (Non-Proprietary), May, 1999.
Also enclosed are a Westinghouse authorization lener. CAW-99-1348, accompanying affidavit, Proprietary Information Notice, and Copyright Notice.
As Item 1 contains information proprietary to Westinghouse Electric Company, it is supported by an affidavit signed by Westinghouse, the owner of the information. the affidavit sets forth the basis on which the information maybe withheld from public disclosure by the Commission and addresses with specificity the consideration listed in paragraph (b)(4) of Section 2.790 of the Commission's regulations.
Correspondence with respect to th'e copyright or proprietary aspects of the items listed above or the supporting Westinghouse Affidavitshould reference CAW-99-1348 and should be addressed to H. A.
Sepp, Manager of Regulatory and Licensing Engineering, Westinghouse Electric Company, P. O. Box 355, Pittsburgh, Pennsylvania 15230-0355.
Proprietary Information Notice Transmitted herewith are proprietary arid/or non-proprietary versions ofdocuments furnished to the NRC in connection with requests for generic and/or plant-specific review and approval.
In order to conform to the requirements of 10-CFR 2.790 ofthe Commission's regulations concerning the protection ofproprietary information so submitted.to the NRC, the information which is proprietary in the proprietary versions is contained within brackets, and where the.
proprietary information has been deleted in the non-proprietary versions, only the brackets remain (the information that was contained within the brackets in the proprietary versions having been deleted).
The justification for claiming the information so designated as proprietary is indicated in both versions by means oflower case letters (a) through (f) contained within parentheses located as a superscript immediately following the brackets enclosing each item of information being identified as proprietary or in the margin opposite such information. These lower case letters refer to the types of information Westinghouse customarily holds in confidence identified in Sections (4)(ii)(a) through (4)(ii)(f)ofthe affidavit accompanying this transmittal pursuance to 10 CFR 2.790(b)(1).
Copyright Notice The reports transmitted herewith each bear a Westinghouse copyright notice. The NRC is permitted to make the number ofcopies ofthe information contained in these reports which are necessary for its internal use in connection with generic and plant-specific reviews and approvals as well as the issuance, denial, amendment; transfer, renewal, modification, suspension, revocation, or violation ofa license, permit, order, or regulation subject to the requirements of 10 CFR 2.790 regarding restrictions on public disclosure to the extent such information has been identified as proprietary by Westinghouse, copyright protection notwithstanding.
With respect to the non-proprietary versions ofthese reports, the NRC is permitted to make the number ofcopies beyond those necessary for its internal use which are necessary in order to have one copy available for public viewing in the appropriate docket files in the public document room in Washington, DC and in local public document rooms as may be required by NRC regulations if the number ofcopies submitted is insufficient for this purpose.
Copies made by the NRC must include the copyright notice in all instances and the proprietary notice ifthe original was identified as proprietary.