ML20092H864

Forwards Nonproprietary WCAP-13166 & Proprietary WCAP-13165, Technical Justification for Eliminating RHR Lines Rupture as Structural Design for Comanche Peak Nuclear Power Plant - Unit 2. Proprietary Rept Withheld (Ref 10CFR2.790)

ML20092H864
Person / Time
Site:	Comanche Peak
Issue date:	02/14/1992
From:	William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20034D235	List: ML20092H864 ML20092H870 ML20092H874
References
TXX-92075, NUDOCS 9202210400
Download: ML20092H864 (2)

Text

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wm,wa.sms 2C Log # TXX-92075

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"""2 File # 903.6

. - Ref. # 10CFR2.790 1UELECTRIC 7g 399, William J. Cahlit. Jr.

G W ktY hesistent U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES) - UNIT 2 DOCKET NO. 50-446 LEAK-BEFORE-BREAK QUALIFICATION FOR THE RESIDUAL HEAT REMOVAL (RHR) LINES Gentlemen:

TV Electric has completed analyses of the Comanche Peak Unit 2 RHR suction lines with respect to leak-before-break issues. The analyses show that the RHR suction lines satisfy leak-before-break criteria.

TV Electric Company is transmitting the following reports for NRC review and approval.

1. 4 copies of WCAP-13165, " Technical Justification for Eliminating Residual Heat Removal Lines Rupture as the Structural Design Basis for Comanche Peak Nuclear Plant - Unit 2" (Enclosure 1)

2. 4 copies of WCAP-13166, " Technical Justification for Eliminating Residual heat Removal Line Rupture as the Structural Design Basis for Comanche Peak Unit 2" (Non-Proprietary). (Enclosure 2)

Also enclosed are a Westinghouse authorization letter, CAW-91-248, accompanying affidavit, Proprietary Information Notice, and Copyright Notice. (Enclosure 3)

As item 1 contains information proprietary to Westinghouse Electric Corporation, it is supported by an offidavit signed by Westinghouse, the owner of the information. 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 paragraph (b) (4) of Section 2.790 of the Commission's regulations.

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TXX-92075 Page 2 of 2 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 copyright or proprietary aspects of the items listed above or the supporting Westinghouse Affidavit should reference CAW-91-248 and should be addressed to R. P. DiPiazza, Manager of Nuclear Safety Licensing, Westinghouse Electric Corporatior,, P.O. Box 355 Pittsburgh, Pennsylvania 15230-0355 Please note that there are several typographical errors in WCAP-13165 and '

WCAP-13166. On page 4-2, equation 4-3 and page 4-3, equation 4-9 in both WCAPs, change "FP " to "FP ". At the top of page 5-5 in WCAP-13165 and at thebottomofpagE5-4inWCAP-13166, change"..0.D.=14.00 inches..."to

.. 0.D.=12.75 inches...". This change in 0.D. results in a change to "Z" in the same location on the page for SMAW Z = 1.28 (not 1.30) and for SAW, Z-1.41 (r.ot 1.43).

Sincerely.

/ f//

/ /J M William J. Cahill. Jr.

CEJ/gj Enclosure (3) c - Mr. R. D. Martin, Region IV w/o enclosure ,

Resident Inspectors, CPSES (2) w/o enclosure

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