NOC-AE-05001880, Revised Commitment to Inspect STP Unit 2 Bottom Mounted Instrumentation Penetrations
| ML051320279 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 05/05/2005 |
| From: | Jordan T South Texas |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NOC-AE-05001880 | |
| Download: ML051320279 (3) | |
Text
Nuclear Operating Company South cPl kcb*GbxWSbtbn PAO.259Ba8 g*MTz 7748 May 5, 2005 NOC-AE-05001880 10CFR50 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 50498, STN 50-499 Revised Commitment to Inspect STP Unit 2 Bottom Mounted Instrumentation Penetrations
Reference:
Letter dated July 17, 2003 from J. J. Sheppard to NRC Document Control Desk, "Supplement to STP Commitment to Investigate and Repair Bottom Mounted Instrumentation Penetration Indications" (NOC-AE-03001567)
The referenced letter documents a commitment made by STPNOC to perform volumetric examinations of the STP Unit 2 bottom mounted instrumentation (BMI) penetrations. Specifically, the commitment stated that STPNOC would:
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 2REl1 scheduled for 2005).
The planned scope of 2RE1 1 does not require removal of the core barrel and removal of the core barrel would significantly affect the outage. The visual inspections of STP Unit 1 and Unit 2 BMI penetrations and a review of the large amount of industry BMI inspection data that is now available as a result of the industry and NRC response to the BMI leakage at STP Unit 1 in 2003 have not identified any other incidents of BMI cracking or leakage. Based on this information STPNOC has concluded the likelihood of STP Unit 2 BMI penetration cracking or leakage is very low and volumetric inspection of the penetrations in 2REl 1 is not necessary. STPNOC will continue to perform visual inspections of the Unit 1 and Unit 2 BMI penetrations at each outage as required by our procedures. Consequently, STPNOC has determined that the volumetric examination of the Unit 2 BMI penetrations can be safely rescheduled for the Unit 2 10-year In-Service Inspection scheduled for Spring 2010, which is the next Unit 2 outage where the core barrel is planned to be removed. The commitment is being revised accordingly.
Please contact Mr. Scott Head at 361-972-7136 or me at 361-972-7902 if you have any questions.
Vice President Engineering and Technical Services awh
Attachment:
Commitment Record 05001880 (BMI commitment change).doc STI: 31878497
NOC-AE-05001880 Page 2 cc:
(paper copy) (electronic copy)
Bruce S. Mallett A. H. Gutterman, Esquire Regional Administrator, Region IV Morgan, Lewis & Bockius LLP U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 David H. Jaffe Arlington, Texas 76011-8064 U. S. Nuclear Regulatory Commission U. S. Nuclear Regulatory Commission Jack A. Fusco Attention: Document Control Desk Michael A. Reed One White Flint North Texas Genco, LP 11555 Rockville Pike Rockville, MD 20852 C. A. Johnson AEP Texas Central Company Richard A. Ratliff C. Kirksey Bureau of Radiation Control City of Austin Texas Department of State Health Services 1100 West 49th Street Jon C. Wood Austin, TX 78756-3189 Cox Smith Matthews Jeffrey Cruz J. J. Nesrsta U. S. Nuclear Regulatory Commission R. K. Temple P. 0. Box 289, Mail Code: MN1 16 E. Alarcon Wadsworth, TX 77483 City Public Service C. M. Canady City of Austin Electric Utility Department 721 Barton Springs Road Austin, TX 78704
Attachment NOC-AE-05001880 Commitment Record Commitment: Perform volumetric examination of Unit 2 bottom mounted instrumentation penetrations in the next Unit 2 10-year ISI outage scheduled for Spring 2010.
(CR 03-11746-22)