IR 05000498/1989011

Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Repts 50-498/89-11 & 50-499/89-11

ML20247L276
Person / Time
Site:	South Texas
Issue date:	07/18/1989
From:	Milhoan J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:	Goldberg J HOUSTON LIGHTING & POWER CO.
References
NUDOCS 8908010200
Download: ML20247L276 (3)

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JLI8IW i In Reply Refer To:

Dockets: 50-498/89-11 50-499/89-11

Houston Lighting & Power Company ATTN: J. H. Goldberg, Group Vic President, Nuclear P.O. Box 1700 Houston, Texas 77001 Gentlemen:

Thank you for your letter of June 16, 1989, in response to our letter and Notice of Violation dated June 7, 1989. We have reviewed your reply and find it responsive to the concerns raised in our Notice of Violation. We will review the implementation of your corrective actions during a future inspection to determine that full compliance has been achieved and will be maintaine

Sincerely, Original Signed D3

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James L. Milhoan, Director Division of Reactor Projects cc:

Houston Lighting & Power Company ATTN: M. A. McBurnett, Manager Operations Support Licensing P.O. Box 289 Wadsworth, Texas 77483 Houston Lighting & Power Company ATTN: Gerald E. Vaughn, Vice President Nuclear Operations P.O. Box 289 Wadsworth, Texas 77483 RIV:DRP/Dh C:DRP/ :DRPw DMHunnicutt;df EJHoller' 4.JCa=fMn3LMAn- O!

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Houston Lighting & Power Company -2-Houston Lighting & Power Company ATTN: J. T. Westermeier, General Manager South Texas Project P.O. Box 289 Wadsworth, Texas 77483 Central Power & Light Company ATTN: R. L. Range /R. P. Verret P.O. Box 2121 Corpus Christi, Texas 78403 City of Austin Electric Utility ATTN: R. J. Miner, Chief Operating Officer (2 copies)

721 Barton Springs Road Austin, Texas 78704  ;

Newman & Holtzinger, ATTN: J. R. Newman, Esquire 1615 L Streat Washington, Houston Lighting & Power Company ATTN: S. L. Rosen P.O. Box 289 Wadsworth, Texas 77483 Houston Lighting & Power Company ATTN: R. W. Chewning, Chairman Nuclear Safety Review Board j P.O. Box 289 Wadsworth, Texas 77483 City Public Service Board ATTN: R. J. Costello/M. T. Hardt P.O. Box 1771 '

San Antonio, Texas 78296 i

Houston Lighting & Power Company ATTN: Licensing Representative- l Suite 610 Three Metro Center Bethesda, Maryland 20814 Houston Lighting & Power Company ATTN: Rufus S. Scott, Associate General Counsel P.O. Box 1700 Houston, Texas 77001 i

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Houston Lighting k Power P.O. Box 1700 Houston. Texas 77001 (713) 228 9211 June 16, 1989 ST-HL AE-3141 File No. G02.04 _ '

10CFR2.20 .

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U. S. Nuclear Regulatory Commission 3@

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Attention: Document Control Desk

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Washington, DC 20555 jhi O{-

South Texas Project Electric Generating Station

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Units 1 & 2 Docket Nos. STN 50-498. STN 50-499 Resnonse to Notice of Violation (498/8911-01: 499/8911-01)

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Houston Lighting & Power Company has reviewed Notice of Violation (498/8911-01; 499/8911-01) dated June 7,1989, and submits the attached response pursuant to 10CPR2.20 If you should have any questions on this matter, please contact Mr. M. A. McBurnett at (512)972-853 /

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G. E. Vaughn Vice President Nuclear Operaticns CEV/PLV/eg Attachment: Response to Notice of Violation (498/8911-01; 499/8911-01)

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1 A1/049.NL2 A Subsidiary of Houston Industries Incorporated u $ 9-250

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Regional Administrator, Region IV Rufus S. Scott Nuclear Regulatory Commission Associate General Counsel 611 Ryan Plaza Drive, Suite 1000 Houston I.ighting & Power Company Arlington, TX 76011 P. O. Box 1700 Houston, TX 77001 George Dick, Project Manager U. S. Nuclear Regulatory Commission INPO Washington, DC 20555 Records Center 1100 Circle 75 Parkway Jack E. Bess Atlanta, CA 30339-3064 Senior Resident Inspector - Unit I c/o U. S. Nuclear Regulatory Commission Dr. Joseph M. Hendrie P. O. Box 910 50 Be11 port Lane Bay City TX 77414 Be11 port, NY 11713 ~

J. I. Tapia Senior Resident Inspector - Unit 2 c/o U. S. Nuclear Regulatory Commission P. O. Box 910 Bay City, TX 77414 J. R. Newman, Esquire Newman & Holtzinger, P. L Street, N. Washington, DC 20036 R. L. Range /R. P. Verret Central Power & Light Company P. O. Box 2121 Corpus Christi, TX 78403 R. John Miner (2 Copies)

Chief Operating Officer City of Austin Electric Utility 721 Barton Springs Road Austin, TX 78704 R. J. Costello/M. T. Hardt City Public Service Board P. O. Box 1771 San Antonio, TX 78296 Revised 12/21/88 A1/049.NL2

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g Attachment ST HL- AE 3141 1 Page 1 of 3 South Texas Project Electric Generating Station Units 1 & 2 4 Docket Nos. STN 50-498, STN 50 499 Response to Notice of Violation (498/8911-01: 499/8911-01) )

1 Statement of Violation

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10CFR50.49, paragraph (f) requires that (environmental) qualification of each component m ~ust be based on testing or experience with identical equipment, or with similar equipment with a supporting analysis, to show that the equipment to be qualified is acceptabl Paragraph (k) of 10CFR50.49 states that equipment previously required by the Commission to be qualified to NUREG-0588, " Interim Staff Position on Environmental Qualification of Safety-Related Electrical Equipment," -

need not be requalifie Paragraph 5(1) of NUREG-0588 states that the qualification documentation shall verify that each type of electrical equipment is qualified for its application and meets its specified performance requirements. The basis of qualification shall be explained to show the relationship of all facets of proof needed to support adequacy of the complete equipmen Data used to demonstrate the qualification of the equipment shall be pertinent to the application and organized in an auditablo for Contrary to the above, the equipment qualification file, which contained Wyle Laboratories Report No. 47664-05, " Assessment Report on Limitorque Operators For Use in South Texas Nuclear Power Plant," for eight auxiliary feedwater valves with space heaters installed and energized, did not support qualification. This was due to the failure to analyze all possible effects of energized space heaters used within the motor operator. No analyses were contained in the files to fully establish qualification for air temperature rises of cables, wires, splices, and components resulting from their proximity to the heater I Houston Lir_htine & Power Positior HL4R concurs that the cited violation occurred.

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ST-HL-AE-3141 Page 2 of 3 i

South Texas Project Electric Generating Station Units 1 & 2 Docket Nos. STN 50-498, STN 50 499 Response to Notice of Viqlation (498/8911-01: 499/8911-01)

III. Reason for Violation The cause of this violation is failure of design personnel to recognize the need to disconnect the space heaters. This resulted from the fact that normally, heater elements are wired to a terminal strip on points separate from the wiring of the motors and the limit and torque switches. However, in the case of these DC-operated MOVs, the motor beater element leads were connected by the vendor to the same points on the terminal strip used in wiring the motor leads. Design personnel only evaluated the seismic qualification impact of the space heaters, ""

and did not consider the environmental impact of the heaters on operability of the valves. Consequently, the heater elements were It included in the electrical schematics and so were left connecte was later determined that documentation did not exist confirming environmental qualification of the MOVs with space heaters energize I Corrective Action Taken and Results Achieved The following corrective actions have been taken: The space heaters for the affected motor-operated valves have been deenergize . The motor-operated valves in question have been evaluated to determine the impact of the space heaters having been energize The review determined that the energized heaters would not have significantly increased the temperature of the motors above normal ambient conditions so that, from a temperature standpoint, the qualification of the valve motors was not challenged. Documentation of this evaluation will be added to the environmental qualification package for the Et powered motor operators by July 7, 198 Corrective Action Taken to Prevent Recurrence Plant design has been reviewed to determine if this concern with space heaters has occurred elsewhere. No other instances have been found where space heaters are energized inappropriatel A1/049.NL2

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South Texas Project Electric Generating Station Units 1 & 2 Docket Nos. STN 50-498, STN 50-499 Response to Notice of Violation (498/8911-01: 499/8911-01)

VI, pate of Full Como11ance The spaca heaters identified above have been deenergized and do not represca,; g tor.L.inued' challenge to the environmental qualification of the motor operator'. The effects of the past operation of the space heaters has been determined to be within the boundaries of the existing environmental qualification of motor operators. Therefore, HL&P is in full compliance at this tim A1/049.NL2

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