NOC-AE-03001567, Supplement to STP Commitment to Investigate and Repair Bottom Mounted Instrumentation Penetration Indications

Supplement to STP Commitment to Investigate and Repair Bottom Mounted Instrumentation Penetration Indications

ML032020116
Person / Time
Site:	South Texas
Issue date:	07/17/2003
From:	Sheppard J South Texas
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NOC-AE-03001567, STI:31633106
Download: ML032020116 (3)

Text

Nuclear Operating Company South TwssPrqcd Elctric G0nt StAMon P. Box 289 WSsoth Tes 77483 AAA.

July 17, 2003 NOC-AE-03001567 U. S. Nuclear Regulatory Commission Attention: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852 South Texas Project Units 1 & 2 Docket Nos. STN 50-498, STN 50-499 Supplement to STP Commitment to Investigate and Repair Bottom Mounted Instrumentation Penetration Indications

Reference:

Letter, J. J. Sheppard to NRC Document Control Desk, "Additional Information Regarding STP's Commitment to Investigate and Repair Bottom Mounted Instrumentation Penetration Indications," dated July 11, 2003 (NOC-AE-03001557)

As a result of our meeting with the NRC today, this letter confirms that the following statements from the referenced letter are commitments made by STP Nuclear Operating Company:

STPNOC will take the following action to address the long-term management of potential BMI degradation:

• Perform volumetric and enhanced visual examinations of the Unit 1 penetrations at the next in-service inspection of the Unit I reactor pressure vessel.

• Perform ultrasonic examinations of the reactor pressure vessel base metal around the repaired penetrations at future selected Unit I refueling outages to confirm there are no indications of pressure vessel wastage from RCS water in the gap area of the repaired penetrations. The details of these examinations will be described in ASME Code relief requests for the repairs.

APOF STI: 31633106

NOC-AE-03001567 Page 2 of 3

• Examine Unit 2 penetrations with a volumetric NDE method at the next Unit 2 refueling outage where the core barrel is planned to be removed (currently 2RE II scheduled for 2005).

STPNOC will not commence heat-up of STP Unit 1 to Mode 4 until it receives written confifthation from the NRC that all necessary NRC actions are complete.

If there are any questions regarding this supplemental information, please contact Mr. Mark McBurnett at 361-972-7206 orme at 361-972-8757.

J. J.heppard President and Chief Executive Officer jtc

NOC-AE-03001567 Page 3 of 3 cc:

(paper copy) (electronic copy)

Ellis W. Merschoff A. H. Gutterman, Esquire Regional Administrator, Region IV Morgan, Lewis & Bockius LLP U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 L. D. Blaylock Arlington, Texas 76011-8064 City Public Service U. S. Nuclear Regulatory Commission Mohan C. Thadani Attention: Document Control Desk U. S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike R. L. Balcom Rockville, MD 20852 Texas Genco, LP Richard A. Ratliff A. Ramirez Bureau of Radiation Control City of Austin Texas Department of Health 1100 West 49th Street C. A. Johnson Austin, TX 78756-3189 AEP Texas Central Company Cornelius F. O'Keefe Jon C. Wood U. S. Nuclear Regulatory Commission Matthews & Branscomb P. 0. Box 289, Mail Code: MN1 16 Wadsworth, TX 77483 C. M. Canady City of Austin Electric Utility Department 721 Barton Springs Road Austin, TX 78704