ML20151V361

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Supplemental Deficiency Rept CP-87-133 Re High Energy Line Break Analysis.Initially Reported on 880118.Longitudinal Break 605 Eliminated from Analysis of Stress Problem 1-025, Per Westinghouse Analysis.No Physical Plant Mods Required
ML20151V361
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 04/25/1988
From: Counsil W, Woodlan D
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
CP-87-133, TXX-88405, NUDOCS 8805030036
Download: ML20151V361 (1)


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FE log # TXX-88405 File # 10110 903.6 Ref. # 10CFR50.55(e) 7t/ ELECTRIC April 25, 1988 o

V. S. Nuclear Regulatory Comission Attn: Document Control Desk Washington, D.C.

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SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET NOS. 50-445 AND 50-446 ilIGH ENERGY LINE BREAK ANALYSIS SDAR: CP-87-133 (SUPPLEMENTAL REPORT)

Gentlemen:

On January 18, 1988, we notified you by our letter, logged TXX-88118, of a reportable deficiency in which adverse interactions associated with high energy longitudinal pipe breaks were not completely identified. This letter provides the corrective action taken on the pipe break related to SDAR CP-85-46 which was incorporated into SDAR CP-87-133.

Since we submitted TXX-88118 we have completed our evaluation of the finite element analysis performed by Westinghouse.

Based upon Westinghouse's refined analysis, longitudinal break number 605 has been eliminated from the pipe rupture analysis of stress problem 1-025.

As a result, the condition described in SDAR CP-85-46 will require no'further corrective actions.

No physical plant modifications will be required.

The current program methodology and implementation are addressed on a broader scope by SDAR CP-87-133.

Documentation to support our conclusion is available onsite for your inspector's review.

i Very truly yours, 0

W. G. Counsil By:

L D. R. Woodlan Docket Licensing Manager HAM /grr c-Mr. R. D. Martin, Region IV l

Resident inspectors, CPSES (3) y 78805030036 880425

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