ML17328A918

Forwards Proprietary WCAP-12850 & Nonproprietary WCAP-12851, Structural Evaluation of DC Cook Nuclear Plant Units 1 & 2 Pressurizer Surge Lines,Considering Effects of Thermal Stratification, Per 910130 Response to NRC Bulletin 88-011

ML17328A918
Person / Time
Site:	Cook
Issue date:	03/19/1991
From:	Alexich M INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	Murley T NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17328A919	List: ML17328A918 ML17328A920 ML20029C140
References
AEP:NRC:1086B, IEB-88-011, IEB-88-11, NUDOCS 9103260243
Download: ML17328A918 (8)

Text

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

.ACCESSION NBR:9103260243 DOC.DATE: 91/03/19 NOTARIZED: YES DOCKET FACIL:50-315 Donald C. Cook Nuclear Power Plant, Unit 1, Indiana & 05000315 50-316 Donald C. Cook Nuclear Power Plant, Unit 2, Indiana & 05000316 AUTH. NAME AUTHOR AFFILIATION ALEXICH,M.P. Indiana Michigan Power Co. (formerly Indiana & Michigan Ele RECIP.NAME RECIPIENT AFFILIATION MURLEY,T.E. Document Control Branch (Document Control Desk)

SUBJECT:

Forwards proprietary WCAP-12850 & nonproprietary WCAP-12851, "Structural Evaluate.on of DC Cook Nuclear Plant Units 1 & 2 Pressurizer Surge Lines, Considering Effects of Thermal Stratification," per 910130 response to NRC Bulletin 88-011.

DISTRIBUTION CODE: IE30D Bulletin COPIES RECEIVED:LTR 88-11 Pressurizer Surge Line T ENCL ermal Q SIZE:

Stratification TITLE:

NOTES: l0~AD PggP> P Q +~1 - IZS'5/ IVP ~f 7 S~g~ Fi/~S RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD3-1 LA 1 0 PD3-1 PD 1 1 COLBURN,T. 1 1' INTERNAL'EOD/DOA 1 AEOD/DSP/TPAB 1 1 AEOD/ROAB 1 1 NRR CHAN,T 1 1 NRR HOU,S 1 1' NRR KUO,P 1 1 NRR/DET/EMEB 7E 1' NRR/DOEA/OEAB11 1 1 NRR/DOEA/OGCB11 1 NRR/DREP/PEPB9D 1 1 5RRQJ3ST 8E2 1 1 NRR/PMAS/ILRB12 1 1 EG KGN3 F~ FILE 01 02 1 1

1 RES/DSIR/EIB 1 1 EXTERNAL: NRC PDR 1 1 g( NSIC ISP NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM P 1-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 20 ENCL

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Indiana Michigan Power Company P.O. Box 16631 Cotumbus, OH 43216 INDlANA NICHIGiAAf POWfR AEP;NRC:1086B Bulletin No. 88-11 Donald C. Cook Nuclear Plant Units 1 and 2 Docket Nos. 50-315 and 50-316

'icense Nos. DPR-58 and DPR-74 PRESSURIZER SURGE LINE THERMAL STRATIFICATION PLANT-SPECIFIC ANALYSIS UPS. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C, 20555 Attn: T ~ E. Murley March 19, 1991

Dear Dr. Murley:

References WCAP-12850, "Structural Evaluation of Donald C. Cook Nuclear Plant Units 1 and 2 Pressurizer Surge Lines, Considering the Effects of Thermal Stratification," (proprietary version) dated January 1991

2) WCAP-12851, "Structural Evaluation of Donald C. Cook Nuclear Plant Units 1 and 2 Pressurizer Surge Lines, Considering the Effects of Thermal Stratification," (non-proprietary version) dated January 1991 On December 20, 1988, the NRC issued Bulletin No. 88-11, "Pressurizer Surge Line Thermal Stratification." In the bulletin, the NRC requests all addressees to establish and implement a program to confirm pressurizer surge line integrity in view of the occurrence of thermal stratification, and requires them to inform the staff of the actions taken to resolve this issue.

In our letter,.AEP:NRC:1086C, dated January 30, 1991, we indicated that we would provide a plant-specific analysis of the pressurizer surge line.- This submittal transmits the plant-specific analysis of the pressurizer surge line for Donald CD Cook Nuclear Plant Units 1 and 2.

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Dr. T ~ E. Murley AEP:NRC:1086B To satisfy the requirements and schedules of Bulletin No. 88-11, Cook Nuclear Plant participated in a program for partial resolution of this issue through the Vestinghouse Owners Group (WOG). The results of the VOG generic, detailed analysis were submitted to the NRC of by Vestinghouse'n WCAP-12639, dated June 1990 'pon completion the WOG generic, detailed analysis, we contracted Westinghouse to perform a plant-specific analysis of the Cook Nuclear Plant Units 1 and 2 pressurizer surge lines as required by NRC Bulletin No. 88-11.

The results of this plant-specific analysis performed by Westinghouse, as documented in References 1 and 2 (enclosed); have demonstrated that Cook Nuclear Plant Units 1 and 2 will meet the stress limits and cumulative usage factor requirements of the ASME Code for the duration of licensed operation (32 effective full power years). Three copies of References 1 and 2 are enclosed for your review and approval.

As WCAP-12850 contains information proprietary to Vestinghouse Electric Corporation, it is supported by an affidavit signed by Westinghouse, the owner of the information. The enclosed Westinghouse authorization letter, CAW-91-132, contains the affidavit, along with the Proprietary Information Notice and the Copyright Notice. The affidavit sets forth the basis on which the information may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in 10 CFR Section 2.790 paragraph (b)(4) of the Commission's regulations.

Accordingly, it is respectfully requested that the information which is proprietary to Westinghouse be withheld from public disclosure in accordance with 10 CFR Section 2.790 of the Commission's regulations, Correspondence with respect to the copyrighted or proprietary aspects of the items listed above or the supporting Vestinghouse affidavit should reference CAW-91-132 and be addressed to R. P. DiPiazza, Manager of Operating Plant Licensing Support, Westinghouse Electric Corporation, P.O. Box 355, Pittsburgh, PA 15230-0355.

This letter is being submitted under oath pursuant to the provisions of Section 182a, Atomic Energy Act of 1954, as amended.

Sincerely, M. . Alex ch Vice President ldp Enclosures

Dr. T. E. Murley AEP:NRC:1086B cc: D. H. Williams, Jr. - w/o A. A. Blind - Bridgman - w/o J ~ R. Padgett - w/o G. Charnoff - w/o A. B. Davis - Region III NRC Resident Inspector - Bridgman NFEM Section Chief -'/o

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COUNTY OF FRANKLIN Milton P. Alexich, being duly sworn, deposes and says that he is the Vice President of licensee Indiana Michigan Power Company, that he has read the foregoing Response to Bulletin No. 88-11: Pressurizer Surge Line Thermal Stratification Plant-Specific Analysis and knows the contents thereof; and that said contents are true to the best of his knowledge and belief.

Subscribed and sworn to before ne this ~!

day of 199~.

/ '

NOTARY PUBLIC RlTA D. HILL NOTARY PUBLIC. STATE,OT OHIO eVCOMKIISSIOII EXPIRES

e e Proprietary Information Notice Transmitted herewith, are proprietary and/or non-proprietary versions of documents 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 of the Commission's regulations concerning the protection of proprietary 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 hav'ing been deleted). The justification for claiming the information so designated as proprietary is indicated in both versions by means of. lower case letters (a) through (g) contained within parentheses located as a superscript immediately, following the brackets enclosing each item of information being identified as proprieta) y or in the margin opposite such information., These lower case letters refer to the types of information llestinghouse customarily holds in confidence identified in Sections (4)(ii)(a) through (4)(ii)(g) of the affidavit accompanying this transmittal pursuant o 10 CFR 2.790(b)(l).

Copyright Notice The reports transmitted herewith each bear a Westinghouse copyright notice.

The NRC is permitted to make the number of copies of the information contained in these reports which are necessary for its internal'se in connection with m

generic and plant-specific reviews and approvals as well as the issuance, denial, amendment, transfer, renewal, modification, suspension, revocation, or violation of a 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 not withs'tanding. With respect to the non-proprietary versions of these reports, the NRC is permitted to make the number of copies 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'ublic document room in Wash'ington, OC and in local public document rooms as may'be required by NRC regulations if the number of copies submitted is insufficient for this purpose. The NRC is not authorized to make copies for the personal use of members of the public who make use of the NRC public document rooms. Copies made by the NRC must include the copyright notice in all instances and the proprietary notice if the o~.iginal was identified as proprietary.