ML032120641
| ML032120641 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 08/08/2003 |
| From: | Thadani M NRC/NRR/DLPM/LPD4 |
| To: | |
| Thadani M, NRR/DLPM, 415-1476 | |
| References | |
| TAC MB8435 | |
| Download: ML032120641 (10) | |
Text
August 8, 2003 LICENSEE:
STP Nuclear Operating Company FACILITY:
South Texas Project, Unit 1
SUBJECT:
SUMMARY
OF HEADQUARTERS, REGION IV, AND SOUTH TEXAS PROJECT NUCLEAR OPERATING COMPANY TELEPHONE CONFERENCE OF JUNE 26, 2003, REGARDING SOUTH TEXAS PROJECT, UNIT 1, BOTTOM-MOUNTED INSTRUMENTATION LEAKAGE ISSUE; STATUS OF ACTIVITIES (TAC NO. MB8435)
On June 26, 2003, the U. S. Nuclear Regulatory Commission (NRC) Headquarters and Region IV staff held a telephone conference with South Texas Project Nuclear Operating Company (STPNOC), the licensee for South Texas Project (STP), Units 1 & 2. The conference call was a continuation of the ongoing discussions and was a follow up of the licensees activities following the discovery of an apparent leakage at Unit 1 at the interface of reactor vessel bottom head mounted instrumentation (BMI) penetrations 1 and 46. is a list of participants. Enclosure 2 is the telephone conference agenda. is STPNOCs Schedule/Plan for Regulatory Interactions.
At this phone call, the licensee discussed the status of ongoing activities in the areas of nozzle repairs, root cause analysis, boat samples, and the status of engineering activities.
The licensee outlined the status of these activities as follows:
Repair Status The licensee has completed the repairs of leaking BMI penetrations 1 and 46. All quality control requirements including magnetic particle examination, dye penetrant examination, ultrasonic examination, boroscopic examination, and wastage assessment have been completed.
Machined J-grooves have been shown to have a high quality surface. No grinding preparation was required for the electrical discharge machining process of cutting boat samples.
The licensee has removed the stuck thimble in penetration no. 31, and has completed the non-destructive examination (NDE) of this nozzle and found no problems.
While working with the repair activities on nozzles 1 and 46, STPNOC discovered debris in the penetrations. Assessments of the debris indicated it to be Inconel material. The debris was in the form of metal shavings. The debris appears to have been deposited in the BMI guide tubes at the time of plant construction, and appears to be the result of machining activities on Inconel material. The licensee is removing and cleaning all the associated guide tubes to resolve this problem.
The licensee also commented that all repair NDE work has been completed.
Boat Samples A mockup will be fabricated to cut the boat samples. Work is ongoing on qualification coupons. The licensee is working with the laboratories for the analyses of the boat samples. STPNOC is working closely with the NRC staff to keep everyone informed of the results.
Status of Engineering STPNOC stated that it has received the NRC request for information regarding relief request RR-ENG-2-35 (Boat Samples), and will have the responses to the NRC staff by June 27th. Also, STPNOC will provide a summary of the finite element modeling analyses, observed by the staff during a visit to Framatome in Lynchburg, Virginia, by June 30th. The STPNOC closeout of the April 24, 2003, letter is due to the NRC staff by July 14, 2003. The licensee will discuss the letter at the forthcoming July 17, 2003, meeting. The licensee will provide information to the NRC staff by telephone about material removed by boat samples.
/RA/
Mohan C. Thadani, Sr. Project Manager, Section 1 Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-498
Enclosures:
- 1. List of Participants
- 2. Telecon Agenda
- 3. Schedule/Plan for Regulatory Interactions cc: see next page Boat Samples A mockup will be fabricated to cut the boat samples. Work is ongoing on qualification coupons. The licensee is working with the laboratories for the analyses of the boat samples. STPNOC is working closely with the NRC staff to keep everyone informed of the results.
Status of Engineering STPNOC stated that it has received the NRC request for information regarding relief request RR-ENG-2-35 (Boat Samples), and will have the responses to the NRC staff by June 27th. Also, STPNOC will provide a summary of the finite element modeling analyses, observed by the staff during a visit to Framatome in Lynchburg, Virginia, by June 30th. The STPNOC closeout of the April 24, 2003, letter is due to the NRC staff by July 14, 2003. The licensee will discuss the letter at the forthcoming July 17, 2003, meeting. The licensee will provide information to the NRC staff by telephone about material removed by boat samples.
/RA/
Mohan C. Thadani, Sr. Project Manager, Section 1 Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-498
Enclosures:
- 1. List of Participants
- 2. Telecon Agenda
- 3. Schedule/Plan for Regulatory Interactions cc: see next page DISTRIBUTION:
PUBLIC RidsAcrsAcnwMailCenter JFoster PDIV-1 Reading RidsRgn4MailCenter (AHowell)
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MMitchell BBateman RidsNrrPMMThadani KManoly SBloom RidsNrrPMWReckley WCullen SCoffin TMensah MFields ACCESSION NO: ML032120641
- via e-mail NRC-001 OFFICE PDIV-1/PM PDIV-1/LA RIV PDIV-1/SC NAME MThadani:sab MMcAllister WJohnson*
RGramm DATE 8/08/2003 8/08/2003 8/08/2003 8/08/2003 OFFICIAL RECORD COPY STPNOC/NRC TELEPHONE CONFERENCE JUNE 26, 2003 LIST OF PARTICIPANTS Licensees Participants Mark McBurnett Manager of Quality and Licensing Steve Thomas Manager, Plant Design Tim Bowman Manager, Unit 1 Plant Operation Harry Murray BMI Project Manager Ed Conway Public Information Wayne Harrison Licensing NRC Participants Headquarters Region IV Bob Gramm Dwight Chamberlain Mohan Thadani Bill Johnson Bill Cullen Tom Farnholtz Mark Hartzman Russ Bywater Ganesh Cheruvenki Mike Runyan Donnie Harrison Wayne Sifre Matthew Mitchell Niel OKeefe Ed Andruszkiewicz TELEPHONE CONFERENCE AGENDA JUNE 26, 2003 1.
Desired Outcomes & Agenda McBurnett 2.
Overall status of Unit 1 Bowman 3.
Status of repair activities Murray 4.
Root Cause Thomas 5.
Boat sample activities Thomas 6.
Status of Engineering Actions, summary of analyses, relief requests McBurnett Thomas 7.
Schedule for next call or other communications and feedback on call McBurnett Schedule/Plan for Regulatory Interactions June 26, 2003 Complete Date Action
4/12 Notification
4/24 Letter identifying STP actions in response to BMI issue
5/1 Meeting in Rockville to discuss plans to address issue
5/15 Relief Request for alternate filler material
6/5 Meeting in Rockville to discuss results of NDE, preliminary cause, and corrective actions
6/10 Last supplement for Relief Request for core barrel repair
6/11 LER
6/13 Relief Request to Support boat sample
6/18 Site visit to Lynchburg to review analyses
6/19 Relief Request for temper bead repair
6/25 Relief Request to leave flaw in service 6/27 Summary of analyses performed (stress and fatigue) 7/10 Take boat sample 7/14 Letter for closeout of 4/24/2003 letter actions Summary Extent of condition Root cause Corrective action Long term monitoring and inspection plans Boat sample analysis plan Restart plan Meeting in Rockville to discuss 7/14 letter Summary Extent of condition Root cause Corrective action Long term monitoring and inspection plans Boat sample analysis plan Restart plan Public meeting/NRC exit meeting in Bay City 10/12 Supplemental LER with boat sample results
South Texas Project, Unit 1 cc:
Mr. Cornelius F. OKeefe Senior Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 910 Bay City, TX 77414 A. Ramirez/C. M. Canady City of Austin Electric Utility Department 721 Barton Springs Road Austin, TX 78704 Mr. L. K. Blaylock Mr. W. C. Gunst City Public Service Board P. O. Box 1771 San Antonio, TX 78296 Mr. C. A. Johnson/A. C. Bakken AEP Texas Central Company P. O. Box 289 Mail Code: N5022 Wadsworth, TX 77483 INPO Records Center 700 Galleria Parkway Atlanta, GA 30339-3064 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011 D. G. Tees/R. L. Balcom Texas Genco, LP P. O. Box 1700 Houston, TX 77251 Judge, Matagorda County Matagorda County Courthouse 1700 Seventh Street Bay City, TX 77414 A. H. Gutterman, Esq.
Morgan, Lewis & Bockius 1111 Pennsylvania Avenue, NW Washington, DC 20004 Mr. T. J. Jordan, Vice President Engineering & Technical Services STP Nuclear Operating Company P. O. Box 289 Wadsworth, TX 77483 S. M. Head, Manager, Licensing Nuclear Quality & Licensing Department STP Nuclear Operating Company P. O. Box 289, Mail Code: N5014 Wadsworth, TX 77483 Environmental and Natural Resources Policy Director P. O. Box 12428 Austin, TX 78711-3189 Jon C. Wood Matthews & Branscomb 112 East Pecan, Suite 1100 San Antonio, TX 78205 Arthur C. Tate, Director Division of Compliance & Inspection Bureau of Radiation Control Texas Department of Health 1100 West 49th Street Austin, TX 78756 Brian Almon Public Utility Commission William B. Travis Building P. O. Box 13326 1701 North Congress Avenue Austin, TX 78701-3326
South Texas, Unit 1 cc:
Susan M. Jablonski Office of Permitting, Remediation and Registration Texas Commission on Environmental Quality MC-122 P.O. Box 13087 Austin, TX 78711-3087 Mr. Terry Parks, Chief Inspector Texas Department of Licensing and Regulation Boiler Division P. O. Box 12157 Austin, TX 78711 Mr. Ted Enos 4200 South Hulen Suite 630 Ft. Worth, Texas 76109 Mr. James J. Sheppard President and Chief Executive Officer STP Nuclear Operating Company South Texas Project Electric Generating Station P. O. Box 289 Wadsworth, TX 77483