ML20148F534

Final Deficiency Rept CP-86-36 Re Scope of Plant Mods Resulting from Project Pipe Support Validation Program. Initially Reported on 860609.Required Support Mods on Unit 2 Will Be Completed Prior to Hot Functional Test

ML20148F534
Person / Time
Site:	Comanche Peak
Issue date:	03/22/1988
From:	Beck J TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
CP-86-36, TXX-88336, NUDOCS 8803280198
Download: ML20148F534 (1)

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Log # TXX-88336 L -

File # 10110 '

_ 903.9 Ref. # 10CFR50.55(e)

TUELECTRIC March 22, 1988 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET N0. 50-446 LARGE BORE PIPING AND SUPPORTS SUAR: CP-86-36 (FINAL REPORT FOR UNIT 2)

Gentlemen:

On June 9, 1986, we notified you via TXX-4844 of a reportable item involving the scope of plant modifications resulting from the project's pipe support validation program. This is a final report submitted to provide the schedule for completion of corrective action on Unit 2. Our Final Report on Unit I was logged TXX-88099, submitted on January 29, 1988.

As we stated in our last report, this issue was initially deemed reportable after identification of a single overstressed pipe support in the Chemical and Volume Control System (TXX-4844, dated June 9, 1986). Subsequently, we have not performed a detailed failure analysis of individual pipe supports requiring modification on Unit 2. However, we have conservatively assumed that detailed analyses of individual supports would have identified other overstressed hangers, some of which could have adversely affected the safety of operations over the life of the plant.

We will complete the required support modifications on Unit 2 prior to the Unit 2 hot functional test. The support modifications implemented for Unit 2 will be similar to those implemented for Unit 1.

Very truly yours, W. G. Counsil By: d. -

Joh W. Beck Vice President, Nuclear Engineering BSD/grr c-Mr. R. D. Martin, Region IV Resident inspectors CPSES (3) gt[

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