IR 05000498/1987031

Ack Receipt of Informing NRC of Steps Taken to Correct Violations Noted in Insp Repts 50-498/87-31 & 50-499/87-31

ML20238E144
Person / Time
Site:	South Texas
Issue date:	09/11/1987
From:	Gagliardo J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:	Goldberg J HOUSTON LIGHTING & POWER CO.
References
NUDOCS 8709140170
Download: ML20238E144 (2)

Text

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i In Reply Refer To:

Dockets: 50-498/87-31 i 50-499/87-31 l Houston Lighting & Power Company {

ATTN: J. H. Goldberg, Group Vice President, Nuclear P. O. Box 1700 Houston, Texas 77001 ,

Gentlemen:

Thank you for your letter of August 19, 1987, in response to our letter and inspection report dated June 25, 1987. We have reviewed your reply and find it responsive to i.he concerns raised in our inspection report. We will review the implementation of your corrective actions during a future inspection to determine satisfactory resolution of our concern

Sincerely, Or:8!nal Signed !?y J. E. Gagticrdo J. E. Gagliardo, Chief Reactor Projects Branch cc:

Houston Lighting & Power Company ATTN: M. Wisenberg, Manager, Nuclear Licensing P. O. Box 1700 Houston, Texas 77001 Houston Lighting & Power Company ATTN: Gerald E. Vaughn, Vice President Nuclear Operations j P. O. Box 1700 i Houston, Texas 77001 l J

Texas Radiation Control Program Director j bec: (seenextpage)

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RIV File D. Weiss, RM/ALF RSTS Operator R. Pirfo, OGC R. G. Taylor, RPB/C RSB Project Inspector, RPB R. Hall P. Kadambi, NRR Project Manager E. Tomlinson, NRR l

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August 19, 1987 ST-HL-AE- 2309 File No.: G3.12 10CFR50 U. S. Nuclear Regulatory Commission Attention: Document Control Desk f l

Washington, DC 20555 South Texas Project .

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Units 1 and 2 1 Docket Nas. STN 50-498, STN 50-499 Response to Open Item 498/87-31-01 l i

Reference (1) NRC Inspection Report 50-498/8731 dated June 25, 1987 (ST-AE-HL-91321)

Pursuant to your request of Reference 1, please find our response to the concerns of the Diesel Generator reliability in Attachment j If you should have any questions on this matter, please contact M S. M. Head at (512) 972-839 G. E. Vaughn  !

Group Vice President Nuclear Plant Operations ELB/hg Attachment (1) Response to Open Item 50-498/8731-01: )

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A Division of Houston Industries Incorporated

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ST-HL-AE-2309 Houston Lighnng ac Power Company

• File No.: C3.12 Page 2

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Regional Administrator, Region IV M.B. Lee /J.E. Malaski -

Nuclear Regulatory Commission City of Austin 611 Ryan Plaza Drive, Suite 1000 P.O. Box 1088 Arlington, TX 76011 Austin, TX 78767-8814 N. Prasad Kadambi, Project Manager A. von Rosenberg/M.T. Hardt U.S. Nuclear Regulatory Commission City Public Service Board 7920 Norfolk Avenue P.O. Box 1771 Bethesda, MD 20814 San Antonio, TX 78296 i

Robert L. Perch, Project Manager Advisory Committee on_ Reactor Safeguards ]

U.S. Nuclear Regulatory Commission U.S. Nuclear Regulato.ry Commission 7920 Norfolk Avenue 1717 H Street Bethesda, MD 20814 Washington, DC 20555:

Dan R. Carpenter Senior Resident Inspector / Operations )

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c/o U.S. Nuclear Regulatory Commission P.O. Box 910

Bay City, TX 77414 . {

Claude E. Johnson Senior Resident Inspector / Construction c/o U.S. Nuclear Regulatory Commission P.O. Fox 910 Bay City, TX 77414 M.D. Schwarz, Jr., Esquire Baker & Botts ,

One Shell Plaza

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Houston, TX 77002 J.R. Newman, Esquire Newman & Holtzinger, L Street, Washington, DC 20036 R.L. Range /R.P. Verret Central Power & Light Company P. O. Box 2121 Corpus Christi, TX 78403 l

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Revised 6/23/87 L4/NRC/ro/hg-0

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....4 Attachment 1

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• ST-HL AE- 2309-File No.: G3.12 Page 1 of 2 .,,

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South Texas Project Units 1 and 2 Docket Nos. STN 50-498, STN 50-499 Response to Open Item 498/87 31-01 Subsequent to the issuance of Open Item 87-31-01, indicated i Reference 1, the reliability of STP's Standby Diesel Generators was reviewed'

during the week of June 22, 1987. During this review all aspects of engine testing and operation were examined and found to be acceptab.le to Mr. E. Tomlinson (USNRC). However, four additional Open Items related.to the diesels were generate . Perform an additional endurance run of approximately 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />

- for each engine. (Open Item 87-39-05)

Status: The additional endurance runs have been successfully performe , Obtain the failure reports for engine #11 " cracked" injection nozzle valve holder and " bound" fuel injection pump control rac (Open Item 87-39-06)

Status: A. The vendor supplied failure analysis for the " bound" fuel injection pump was discussed with Mr. E.' Tomlinson (USNRC) on August 6,198 B. The " cracked" injection nozzle holder has been attributed to a failure of the nozzle spray ti Additional analysis is being performed to determine root q

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cause failure of the spray ti . As a result of engine #13 turbocharger support bolt failure, obtain vibration data for all three turbocharger and compare for consistency. (open Item 87-39-07)

Status: ' The baseline vibration data . comparisons made between the engines were within the anticipated range. Final-vibration data comparison will be made after 150 hours0.00174 days <br />0.0417 hours <br />2.480159e-4 weeks <br />5.7075e-5 months <br /> of'

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,. Attachment 1 ST-HL-AE- 2309 File No.: c3.12

Page 2 of 2 Review the stress analysis of the turbocharger air inlet.p,iping, considering harmonics and nozzle loading, to assure adequate support is provide (Open Item 87-39-08) - ;.

m Status: ThestressanalysishasbeenreviewedandfoundEdbhl acceptable. The calculation summary was discussed with Mr. E. Tomlinson(USNRC) on August 7, 198 .

. il Mr. E. Tomlinson (USNRC) stated that the concern of diesel generitor reliability will be addressed by closing each of the above open items, as such, he considered open Item 87-31-01 as closed ,

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