ML20073Q826

Forwards RXE-91-004, Small Break LOCA Analysis Methodology. Rept Presents Methodology to Be Utilized in Support of Reload Design,Licensing & Operation of Facilities

ML20073Q826
Person / Time
Site:	Comanche Peak
Issue date:	05/24/1991
From:	William Cahill, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20073Q827	List: ML20073Q826 ML20073Q829
References
TXX-91209, NUDOCS 9106040014
Download: ML20073Q826 (2)

Text

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" " . Log # TXX-91209

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File # 10010 r ~~

915 7UHfC7RlC w imam J, nun. Jr. Hay 24, 1991 m ,,,u, va rm,&,,,

U. S Nuclear Regulatery Commission Attn Document Control Desk Washington, D.C. 20555

$UBJECT: COMANCHE PEAK STEAM ELECTRIC t'ATION (CPSES)

DOCKET NOS. 50 445 AND 50 446 RELOAD ANALYSIS PROGRAll RXE 91 004, SMALL BREAM LOSS OF COOLANT ACCIDENT HETHODOLOGY REF: Letter logged TXX.r0342, dated September 17, 1990, from W. J. Cahill, Jr. to the NRC.

Gentlemen:

The TV Electric reload analysis program was discussed with the NRC staff in December, 1988, and again in July, 1990. Following the July discussions, the schedule for submittal of the TV Electric topical reports was provided in the referenced letter. Consistent with that schedule, attached for your review and approval is RXE 91 004, Small Break Loss of Coolant Accident Analysis Methodology report.

RXE 91-004 presents methodology which will be utilized in support of reload design, licensing, and operation of CPSES Units 1 and 2. The report contains a descriptinn of the EXEH PWR Small Break methodology which includes the computer codes, the details of the nodalization schemes, and the calculational procedures followed during all phases of the small break LOCA. In addition, tht coir.pliance of the CPSES analysis with 10CFR50.46 and 10CFR50, Appendix K as wall as THI Action item II.K.3.30 requirements of NUREG 0737 is described.

Approval of the enclosed report, along with approvals of those previously submitted and those yet to be submitted, are required to allow TV Electric to license cycle 3 operation (scheduled to begin in September, 1992), without recourse to a nuclear fuel vendor. TU Electric requests that the NRC review and approve the enclosed report by February, 1992, i

9106040014"51NG24 400 North Ohve Street LB.81 Dallas, Texas 75201 FDR ADOCK 05000440 FDR h c Q1 tj

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i TXX-91209 i Page 2 of 2 Should you have any questions or comments regarding the attached report or the l TV Electric Reload Analysis Program, please contact Jimmy D. Seawright.

(214) 812 4375 or Mickey R. K111 gore, (214) 812 8271.

Sincerely, William J. Cahill, Jr.

bys O

0. R. Woodlan  ;

Docket Licensing Manager JOS/vid Attachment j c - Mr. R. D. Hartin, Region IV  ;

Resident Inspectors, CPSES (2) '

Mr. J. W. Clifford, NRR i

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