ML17289B150

Forwards Rev 1 to WPPSS-FTS-131, Applications Topical Rept for BWR Design & Analysis. Rev 1 Consists of Changes in Methodology for Determining Gap Conductance & Loss of Reactor Feed Water Heating Transient

ML17289B150
Person / Time
Site:	Columbia
Issue date:	01/27/1993
From:	Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17289B152	List: ML17289B150 ML17289B153
References
GO2-93-021, GO2-93-21, NUDOCS 9302160184
Download: ML17289B150 (6)

Text

ACCEI ERAXiVD "INFORMATION 33OCUMENT DIST UTION SYSTEM REGULARLY DISTRIBUTI SYSTEM (RIDS)

ACCESSION NBR:9302160184 DOC.DATP: 93/01/27 NOTARIZED: NO DOCKET N

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FACIL:50-397 WPPSS Nuclear Project.,'nit 2, Washington Public Powe 05000397 AUTH. NAME AUTHOR AFFILIATION SORENSEN,G.C. Washington Public Power Supply System RECIP.NAME RECIPIENT AFFILIATION Document Control Branch =(Document. Control Desk)

SUBJECT:

Forwards request for review of Topical Rept WPPSS-FTS-131, Rev 1, "Applications Topical Rept For BWR Design 6 Analysis."

DISTRIBUTION CODE: A001D TITLE: OR COPIES RECEIVED:LTR Submittal: General Distribution I ENCL 3 SIZE:

NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD5 LA 1 1 PD5 PD 1 1 CLIFFORDiJ 2 2 INTERNAL: ACRS 6 6 NRR/DET/ESGB 1 1 NRR/DOEA/OTSB11 1 1 NRR/DST/SELB 7E 1 1 NRR/DST/SICB8H7 1 1 NRR/DST/SRXB 8E 1 1 NUDOCS-ABSTRACT 1 1 OC LEMB 1 0 OGC/HDSl 1 0 FILE 01 1 1 EXTERNAL NRC PDR NSIC 1 1 NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WANEI CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 504-2065) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEEDI TOTAL NUMBER OF COPIES REQUIRED: LTTR 21 ENCL 19

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WASHINGTON PUBLIC POWER SUPPLY SYSTEM P.O. Bm 968 ~ $ 000 George Wasbtngton Way ~ Rtcbland, Wasbtngton 993524968 ~ (509) 972-5000 Docket No. 50-397 January 27, 1993 G02-93-021 Docket No. 50-397 U.S, Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Gentlemen:

Subject:

NUCLEAR PLANT NO. 2, OPERATING LICENSE NPF-21 NOTIFICATION OF REQUEST FOR NRC REVIEW OF TOPICAL REPORT WPPSS-FTS-131, REVISION 1, "APPLICATIONS TOPICAL REPORT FOR BWR DESIGN AND ANALYSIS"

Reference:

Letter G02-91-170, dated September 19, 1991, G.C. Sorensen (SS) to NRC, "Notification of Request for NRC Review of Topical Report WPPSS-FTS-131,

'Applications Topical Report for BWR Design and Analysis'"

In the above reference, the Supply System requested NRC review and approval of Topical Report WPPSS-FTS-131, Rev. 0, "Applications Topical Report for BWR Design and Analysis."

This letter serves to transmit revision 1 of the report. The revised document supersedes Revision 0 in entirety.

Changes were made in the methodology for determining the gap conductance and the loss of reactor feed water heating transient (LOFH). In response to the stability event at WNP-2 in August, a revision was made to the portion of the report that discusses stability analysis. The analyses presented in Revision 0 were for Cycle 4 and included only 8X8 fuel assembly designs.

The analyses results presented in Revision 1 are for Cycle 8 and demonstrate the use of the Supply System methods for performing reload design and analyses for a mixed core consisting of 8X8 and 9X9-9X fuel assembly designs.

All changes made in Revision 1 are indicated by vertical lines in the margins. The changes within this revision are not extensive, but to avoid any confusion that may be caused by removing and replacing pages, a complete new report is being submitted. The revision bars will serve to identify specific changes to the reviewer.

180 930127 05000397 pDR ADOCK pD p,

a gi u lr Page Two NOTIFICATION OF REQUEST FOR NRC REVIEW OF TOPICAL REPORT WPPSS-FTS-131, REVISION 1, "APPLICATIONS TOPICAL REPORT FOR SWR DESIGN AND ANALYSIS" The Supply System is planning to implement core design and analyses to support the fuel load for Cycle 10, scheduled to begin operation in June 1994. To support this schedule, NRC approval will be necessary before July 1993.

Ifyou have any questions or require additional information, please do not hesitate to contact us.

Sincerely, G. C. orensen, Manager Regulatory Programs (Mail Drop PE20)

MGE/bk CC; JB Martin - NRC RV NS Reynolds - Winston &, Strawn JW Clifford - NRC DL Williams - BPA/399 NRC Site Inspector - 901A

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