ML20217K934

Forwards SER Accepting Util 990609 Relief Request RR-ENG-2-4 for Relief from ASME Code,Section XI, Nondestructive Exam Requirements Applicable to Stp,Units 1 & 2,reactor Vessel Closure Head Nuts

ML20217K934
Person / Time
Site:	South Texas
Issue date:	10/15/1999
From:	Gramm R NRC (Affiliation Not Assigned)
To:	Cottle W HOUSTON LIGHTING & POWER CO.
Shared Package
ML20217K937	List: ML20217K934 ML20217K944
References
TAC-MA5872, TAC-MA5873, NUDOCS 9910270031
Download: ML20217K934 (2)

Text

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October 15, 1999 Mr. Willitm T. Cottis i Prrsident end Chirf Executiva Officar STP Nuclear Operating Company South Texas Project Electric Generating Station P. O. Box 289 Wadsworth, TX 77483 -

SUBJECT:

SOUTH TEXAS PROJECT, UNITS 1 AND 2 - SECOND 10-YEAR INTERVAL INSERVICE INSPECTION PROGRAM PLAN - RELIEF REQUEST RR-ENG 2-4 (TAC NOS. MA5872 AND MA5873)

Dear Mr. Cottle:

. By letter dated June 9,1999, STP Nuclear Operating Company (STPNOC) submitted relief -

request RR-ENG-2-4 for relief from the American Society of Mechanical Engineers Code,Section XI, nondestru'ctive examination requirements applicable to the South Texas Project (STP), Units 1 and 2, reactor vessel closure head nuts. STPNOC proposes to perform an alternative ultrasonic examination from the outside and end surfaces of these nuts.

The Nuclear Regulatory Commission staff has evaluated the information provided by STPNOC.

The staff concludes that STPNOC's proposed alternative to the Code requirement provides an acceptable level of quality and safety. Therefore, pursuant to 10 CFR 50.55a(a)(3)(i), the

alternative proposed in relief request RR-ENG-2-4 is authorized for the second 10-year inservice inspection interval of the STP, Units 1 and 2. Our related safety evaluation is enclosed.

Sincerely, ORIGINAL SIGNED BY Robert A. Gramm, Chief, Section 1 Project Directorate IV & Decommissioning Division of Licensing Project Management

' Office of Nuclear Reactor Regulation Docket Nos. 50 498 and 50-499 -

Enclosure:

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Mr. Cornelius F. O'Keefe Mr. J. J. Sheppard, Vice President Senior Resident inspector Engineering & Technical Services U.S. Nuclear Regulatory Commission STP Nuclear Operating Company

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P. O. Box 910 P. O. Box 289 Bay City, TX 77414 Wadsworth,TX 77483 A. Ramirez/C. M. Canady S. M. Head, Supervisor, Licensing Cityof Austin Quality & Licensing Department Electric Utility Department STP Nuclear Operating Company 721 Barton Springs Road P. O. Box 289 Austin, TX 78704 Wadsworth, TX 77483 Mr. M. T. Hardt Office of the Governor Mr. W. C. Gunst ATTN: John Howard, Director City Public Service Board Environmental and Natural P. O. Box 1771 Resources Policy San Antonio,TX 78296 P. O. Box 12428 Austin,TX 78711 Mr. G. E. Vaughn/C. A. Johnson Central Power and Light Company Jon C. Wood P. O. Box 289 Matthews & Branscomb Mail Code: N5012 One Alamo Center Wadsworth,TX 74483 106 S. St. Mary's Street, Suite 700 San Antonio,TX 78205 3692 INPO Records Center Arthur C. Tate, Director 700 Galleria Parkway Division of Compliance & Inspection Atlanta, GA 30339-3064 Bureau of Radiation Control Texas Department of Health Regional Administrator, Region IV 1100 West 49th Street U.S. Nuclear Regulatory Commission Austin, TX 78756 611 Ryan Plaza Drive, Suite 400 Arlington,TX 76011 Jim Calloway Public Utility Commission of Texas D, G. Tees /R. L. Balcom Electric Industry Analysis Houston Lighting & Power Co.

P. O. Box 13326 P. O. Box 1700 Austin, TX 78711-3326 Houston,TX 77251 Judge, Matagorda County Matagorda County Courthouse 1700 Seventh Street Bay City, TX 77414 i

Jack R. Nesman, Esq.

Morgan, Lew:s & Bockius 1800 M Street, N.W.

Washington, DC 20036-5869 May 1999 a