ML20003E423

Fifth Interim Deficiency Rept Re Welds in Essential Cooling Water Sys,Initially Reported on 800312.All Welds to Undergo 100% Visual,Liquid Penetrant & Radiographic Exam.Next Rept Submitted by 810930

ML20003E423
Person / Time
Site:	South Texas
Issue date:	03/26/1981
From:	Oprea G HOUSTON LIGHTING & POWER CO.
To:	Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, ST-HL-AE-641, NUDOCS 8104030439
Download: ML20003E423 (3)

Text

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The Light company n em,e <1,s,,m< & e .<< eo n-s i:ee ><-e , . <<sm,1 ooi :is,22-2ii March 26, 1981 ST-HL-AE-641 SFN: V-0520 fQ5

.k.&'-.l~'O' L~ .: ? ". l3 - 4 Mr. Karl Seyfrit / -, 2 Q / / ' LJj\ U.,

fdC Director, Region IV '

Nuclear Regulate;y Commission ---- "' O 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76012 (F

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Dear Mr. Seyfrit:

'k South Texas Project Units 1&2 Docket Nos. STN 50 498, STN 50-499 Fifth Interim Report Concerning Welds In the Essential Coolina Water Svstem On March 12, 1980, in accordance with 10CFR50.55(e), Houston Lighting

& Power Company notified your office of an item concerning rejectable indica-tions in the radiographs of the girth welds in the Essential Cooling Water (ECW) system pipe. As a result of the limited restart program for ASME Pipe and Pipe Support Welding approved by your office on November 21, 1980, Houston Lighting & Power has initiated a ECW system reexamination and repair program.

All accessible ECW welds will be subjected to a 100% vi ual, liquia penetrant and radiographic examination. Welds identified 6t bring rej:ctable will be replaced or repaired as required. In some casts ,ections of picing will be remo,ed from systems to facilitate inspection re moa b of welds within the section. All weids within the removed sectic li ' axarined and repaired as required. The new end welds will also be examined upon replacement of the section. Data collected from this reexaminatica process will be utilized to perform an engineering evaluation for the limited number of inaccessible welds, i.e., welds in ECW piping encased in concrete or buried beneath concrete structures. Welds detemined to be unsatisfactory will be brought into confomance with the project design requirements.

The schedule for completion of these corrective actions remains con-sistent with that previously provided in ST-HL-AE-575 dated November 19, 1980.

The next report concerning this item will be submitted by September 30, 1981.

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t- Houston Lighting & Power Company March 26,1981

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SFN: V-0530 Page 2 1

If at (713)you have any questions, please contact Mr. Michael E. Powell 676-8592.

Very truly yours, d

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Execu ive Vi President RRH/mf-t i

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}{ouston Ughting & Power Compam '

cc: J. H. Goldberg March 26,1981 D. G. Barker ST-HL 4 -60 C. G. Robertson SFN: V-0530 Howard Pyle Page 3 R. L. Waldrop H. R. Dean D. R. Beeth J. D. Parsons L. K. English J. W. Briskin R. A. Frazar STP RMS H. S. Phillips (NRC)

J. O. Read (Read-Poland, Inc. )

M. D. Schwarz (Baker & Botts)

R. Gordon Gooch (Baker & Botts)

J. R. Newnan (Lowenstein, Newman, Reis, & Axelrad)

Director, Office of Inspection & Enfsrcement Nuclear Regulatory Commission /

Washington, D. C. 20555 M. L. Borchelt Charles Bechhoefer, Esquire President Chairman, Atomic Safety & Licensing Board C;ntral Power & Light Company U. S. Nuclear Regulatory Comission P. O. Box 2121 Washington, D. C. 20555 Corpus Christi, Texas 78403 R. L. Range Dr. Jenes C. Lamb, III Central Power & Light 313 Woodhaven Road P. O. Box 2121 Chapel Hill, North Carolina 27514 Corpus Christi, Texas 78403 R. L. Hancock Mr. Ernest E. Hill Director of Electrical Utilities Lawrence Livernore Laboratory City of Austin University of California P. O. Box 1088 P. O. Box 808, L-123 Austin, Texas 78767. Livermore, California 194550 T. H. Muchlet. beck Citizens for Equitable Utilities, Inc.

City of Austin c/o Ms. Peggy Buchorn P. O. Box 1088 Route 1, Box 1684 Austin, Texas 78767 Brazoria, Te > 77422 J. B. Poston Pat Coy Assistant General Manager of Operations Citizens Concerned About Nuclear Power City Public Service Board 5106 Casa Oro P. O. Box 1771 San A~ anio, Texas 78233 San Antonio, Texas 78296 A. vonRoser erg- Betty Wheeler, Esoaire City Public Service Board Hoffman, Steeg & Wheeler P.'0. Box 1771 1008 S. Madison

. San Antonio, Text.s 78296 Amarillo, Texas 79101

.Brien E. Berwick, Esquire Bernard M. Bordenick, Esquire Assistant Attornay for the State of Texas . Hearing Attorney P. O. Box 12548 Office of the Executive Legal Director Capitol Station U.: 5. Nuclear Regulatory Comission Austin,-Texas 78711 Washington, D. C. 20555

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