ML20153F541

Supplemental Deficiency Rept CP-87-122 Re Various Equipment Nozzle Load Interfaces.Initially Reported on 880105.Stress Calculation Determined That No Overstress Condition in Clip Angles Exists.Next Rept Will Be Submitted by 891212

ML20153F541
Person / Time
Site:	Comanche Peak
Issue date:	09/01/1988
From:	Counsil W, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
CP-87-122, NUDOCS 8809070332
Download: ML20153F541 (2)

Text

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1 M

FE Log # TXX-88654 File # 10110

= = 903.10 tilELECTRIC " # 10 # 00'00(')

September 1, 1988 run e w am*.

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l V. S. Nuclear Regulatory Commission Attn Document Control Desk Washington, D. C. 20555  ;

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SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)  !

DOCKET NOS. 50-445 AND 50-446 l N0ZZLE LOAD INTERFACES ,

SDAR: CP-87-122 (SUPPLEMENTAL REPORT) i Gentlemen:

l On January 5, 1988, we notified you via our report logged Txx r,8026 of .

various equipment nozzle loads which were deemed to be unacceptable. Our last  !

report on this issue was logged TXX-88370, dated April 14, 1988. In TXX-88026  !

we identified four specific equipment nozzle interfaces (items a through d)  ;

which required corrective action. The purpose of this report is to revise the ,

j corrective actions for the emergency diesel generator inlet lube oil pressure ,

strainer clip angles (item d), and to update the corrective action (

implementation schedule.

In TXX-88026 we stated that the emergency diesel generator inlet lube oil l pressure strainer clip angle overstress problem would be eliminated by l modify ng the existing clips. Honever, a subsequent stress calculation j

. utiliz ng "as-built" nozzle loads ar.d a refined method of analysis has ,

determined that no overstress condition exists in the clip angles.  ;

Consequently, the mounting has been qualified and no further corrective action  ;

is required for this item.

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l 400 North obw Sures LB 8I Ddkn, Touu 19M1

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TXX-88654 September 1, 1988 Page 2 of 2 The remaining corrective actions specified in Txx 88026, are anticipated to be completed by January 30, 1989, for Unit 1. In addition, we are reviewing the seismic classification of the filter housing for the Hydrogen Purge System and are pursuing reclassifying it as Seismic Category !!. As stated in TXX-88370, our next report for Unit 2 will be submitted upon completion of the evaluation of the Unit 2 equipment installations, which will be no later than December 12, 1989.

Very truly yours, 0 G kWY W. G. Counsil By:

D. R. Woodlan Docket Licensing Manager CBC/grr c-Mr. R. D. Martin, Region IV Resident inspectors CPSES (3)