ML19351G339

Final Deficiency Rept Re Design of Seal Water Injection Sys for Essential Cooling Water Pumps,Initially Reported on 800703.Current Design Is Consistent W/Pump Manufacturer Requirements.No Design Mod Is Necessary

ML19351G339
Person / Time
Site:	South Texas
Issue date:	12/11/1980
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-582, NUDOCS 8102230542
Download: ML19351G339 (5)

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The Light company nems,em u s,,es s & re. , n o sex 1:oo sees,e,.1 x s2,ooi <:is,22 .e2ii December 11, 1980 ST-HL-AE-582 SFN: V-0530 4

g b Mr. Karl Seyfrit y.1 Director, Region IV Nuclear Regulatory Comission 22- %.$g4 > . 4 611 Ryan Plaza Drive, Suite 1000 Arlington , Texas 76012 g '7(9 g

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Dear Mr. Seyfrit:

Q' South Texas Project

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Units 1&2 Docket Nos. STN 50-498, STN 50-499 Final Report Concerning the Essential Cooling Water Pumo Seal Water Design On July 3,1980, pursuant to 10CFR50.55(e), Houston Lighting & Power Company notified your office of an item concerning the design of the seal water injection system for the Essential Cooling Water (ECW) pumps. Interim reports were sent to your office on August 1,1980 and October Iti,1980. In accordance with our interim report comitment, a final report on this concern is attached.

If there are any questicr.s, please contact Mr. Michael E. Powell at (713) l 676-8592.

l l Very trul yours, l

1 1 G. W. Oprea, Jr.

Executive Vice President l

l l TAP /pjb l Attachment l

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Hous* ton Lighting 6: Power Company December 11, 1980 ST-HL-AE-582 SFN: V-0530 4

Page 2 cc: J. H. Goldberg  ;

D. G. Barker Howard Pyle R. L. Waldrop H. R. Dean D. R. Beeth

, J. D. Par 5uns 1 G. B. Painter i L. K. English

A. J. Granger R. A. Frazar i H. S. Phillips (NRC) i J. O. Read (Read-Poland,Inc.)

M. D. Schwar: (Baker & Botts)

R. Gordon Gooch (Baker & Botts) e J. R. Newman (Lowenstein, Newman, Reis, Axelrad & Toll) i Director, Office of Inspection & Enforcement Nuclear Regulatory Comission i Washington, D. C. 20555 1

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Houdon Lighung & Power Compam De ember 11, 1983 ST-HL-AI-582 SFN: V-0530 Page 3 M. L. Borchel Executive Vice President Central Power 5 Light Co:pany P. O. Box 2121 Corpus Christi, Texas 76403 R. L. Range Central Power 6 Light Co=pany P. O. Box 2121 Corpus Christi, Texas 75403 R. L. Hancock Director of Electrical Utilities City of Austin P, . Box 105S Austin, Texas 7E767 T. H. Muehlenbeck City of Austin F. O. Box 108S Austin, Texas 75767 J. B. Poston Assistant General Manager of Operations City Public Service Board P. O. Box 1771 San Antonio, Texas 78296 A. vonRosenberg City Public Service Board P. O. Box 1771 San Antonio, Texas 78296 e --, . - - - -

- Houston Lighting E Power Company December ll, 1980 ST-HL-AE-582 i

SFN: V-0530

Page 4 Charles Bechoefer, Esquire Chairman, Atomic Safety & Licensing Board U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Dr. James C. Lamb, III 313 Woodhaven Road Chapel Hill, North Carolina 27514 Dr. Emmeth A. Luebke ,

Atomic Safety & Licensing Commission U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Citizens for Equitable Utilities c/o Ms. Peggy Buchorn Route 1, Box 1684 Brazoria, Texas 77422 Pat Coy Citizens Concerned About Nuclear Power 5106 Casa Oro San Antonio, Texas 77422 Betty Wheeler Hoffman, Steeg & Wheeler 1008 S. Madison Amarillo, Texas Brian E. Berwick Assistant Attorney General for the State of Texas P. O. Box 12548 Capitol Station Austin, Texas 78711 Bernard M. Bordenick Hearing Attorney Office of the Executive Legal Director -

U. S. Nuclear Regulatory Commission Washington, D. C. 20555

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Final Report Essential Cooling Water Pump Seal Water Design December 11, 1980 1

DESCRIPTION OF THE INCIDENT On July 3,1980, purusuant to 10CFR50.55(e), Houston Lighting & Power Company notified your office of an item concerning provision of continuous water injection to the Essential Cooling Water (ECW) pump bearings. It appeared that because the design did not meet the requirements of the manufacturer's instruction manual, the manufacturer could not guarantee pump performance within specification.

CORRECTIVE ACTION

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Since the issuance of our interim report (ST-HL-AE-559), the manufacturer has clarified the seal water injection requirements for the specific bearing material to be used in the pumps supplied for STP. Based on the additional information supplied by the pump manufacturer, we have determined that the current seal water injection design is consistent with the manufacturer's requirements, as clarified. Therefore, no design changes are necessary.

RECURRENCE CONTROL A recurrence control program is not considered necessary because the situation appears to be unique. Appropriate design drawings and instruction manual sections will be revised to accurately reflect the vendor requirements, as clarified.

SAFETY ANALYSIS A safety analysis of the corrective action was not performed since it was determined that the system, as designed, meets applicable requirenents.

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