ML052980638
| ML052980638 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 10/27/2005 |
| From: | Thadani M NRC/NRR/DLPM/LPD4 |
| To: | |
| Thadani M, NRR/DLPM, 415-1476 | |
| Shared Package | |
| ML053080184 | List: |
| References | |
| TAC MC6899 | |
| Download: ML052980638 (5) | |
Text
October 27, 2005 LICENSEE:
TXU Generation Company, LP FACILITY:
Comanche Peak Steam Electric Station, Unit 1
SUBJECT:
SUMMARY
OF OCTOBER 18, 2005, MEETING WITH TXU GENERATION COMPANY, LP, TO DISCUSS APPLICATION OF ACCIDENT ANALYSIS METHODOLOGIES FOR REPLACEMENT OF STEAM GENERATORS AT THE COMANCHE PEAK STEAM ELECTRIC STATION (CPSES), UNIT 1 (TAC NO. MC6899)
On October 18, 2005, the U. S. Nuclear Regulatory Commission (NRC) staff conducted a Category 1 meeting with representatives of TXU Generation Company, LP (the licensee for CPSES) at NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The purpose of the meeting was to hear the licensee's briefing on its application of accident analysis methodologies for replacement steam generators (RSGs) at CPSES, Unit 1.
The licensee plans to replace the current Westinghouse D-4 steam generators (SGs) with integral pre-heaters during its spring 2007 refueling outage (1RF12). A list of meeting attendees is provided as Enclosure 1.
The licensee outlined its overview of the RSG project, operating strategy, and implementation schedules of its plan to replace the current Westinghouse D-4 SGs with the proposed Delta 76 SGs that incorporate a feed ring design. The licensees presentation is provided as. The proposed RSGs are similar to the Delta 75 SGs that were installed at the Shearon Harris and V.C. Summer plants. Each proposed RSG incorporates Alloy 690 U-tubes and will be fabricated by Equipos Nucleares, S.A. of Spain.
The licensee described its analysis capabilities outlined in the topical report (TR) supplements (1) ERX-04-005, Revision 0, Application of TXU Powers Non-LOCA Transient Analysis Methodologies to a Feed Ring Steam Generator Design, and (2) TR ERX-04-004, Revision 0, Replacement Steam Generator Supplement to TXU Powers Large and Small Break Loss of Coolant Accident Analysis Methodologies. The licensee previously submitted these TR supplements to the NRC staff for review and approval.
The licensee stated that it plans to submit required changes to the Technical Specifications in November 2005 and submit other license amendments identified through the 10 CFR 50.59 evaluations in May 2006. The licensee requested that NRC approvals for the RSG related licensing actions be completed by February 2007, in time to support the spring 2007 refueling outage.
The NRC staff questioned the licensee about the issues discussed below.
During the discussion of the licensees methodologies for addressing main feedwater break events, the NRC staff asked the licensee whether it had considered a need for restraining the feed-water pipe that spans to the RSGs feeder ring located near the top of the RSGs. The licensee stated that it will provide additional information addressing the NRC staffs question. In response to other NRC staffs questions, the licensee provided further clarifications of the TRs that are currently under NRC staff review.
One member of the public was in attendance. Public Meeting Feedback forms were received from the licensee and the member of public in attendance.
The licensee indicated that all the objectives of the meeting were met. The member of the public indicated that he was not able to find the supporting information on the NRC web site where the meeting notice was posted, but did not call the contacts provided on the web site.
He indicated that all other objectives of the meeting were met Please direct any inquiries for further information to me at 301-415-1476, or by email to mct@nrc.gov.
Sincerely,
/RA/
Mohan C. Thadani, Senior Project Manager, Section 1 Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-445
Enclosures:
- 1. List of Attendees
- 2. Licensee's Presentation cc w/encls: See next page response to other NRC staffs questions, the licensee provided further clarifications of the TRs that are currently under NRC staff review.
One member of the public was in attendance. Public Meeting Feedback forms were received from the licensee and the member of public in attendance.
The licensee indicated that all the objectives of the meeting were met. The member of the public indicated that he was not able to find the supporting information on the NRC web site where the meeting notice was posted, but did not call the contacts provided on the web site.
He indicated that all other objectives of the meeting were met Please direct any inquiries for further information to me at 301-415-1476, or by email to mct@nrc.gov.
Sincerely,
/RA/
Mohan C. Thadani, Senior Project Manager, Section 1 Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-445
Enclosures:
- 1. List of Attendees
- 2. Licensee's Presentation cc w/encls: See next page DISTRIBUTION:
PUBLIC RidsNrrDlpmLpdiv(HBerkow)
KWood PDIV-1 R/F RidsNrrDlpmLpdiv1(DTerao)
JNakoski RidsNrrPMMThadani RidsNrrLADBaxley RidsOgcRp TMensah RidsRgn4MailCenter(AHowell)
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Meeting Notice: ML052780215 Slides: ML053080197 Meeting Summary: ML052980638 NRC-001 Package ML053080184 OFFICE PDIV-1/PM PDIV-1/LA PDIV-1/SC NAME MThadani DBaxley DTerao DATE 10/27/05 10/27/05 10/27/05 OFFICIAL RECORD COPY G:\\DLPM\\PDIV-1\\ComanchePeak\\ML052980638.wpd
LIST OF ATTENDEES NAME ORGANIZATION Whee Choe TXU Power Ben Mays TXU Power Dennis Buschbaum TXU Power Hugo C. Da Silva TXU Power James Boatwright TXU Power Kazunobu Sakamoto JNES David Terao NRC Mohan Thadani NRC Kent Wood NRC
December 2004 Comanche Peak Steam Electric Station cc:
Senior Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 2159 Glen Rose, TX 76403-2159 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011 Mr. Fred W. Madden, Director Regulatory Affairs TXU Generation Company LP P. O. Box 1002 Glen Rose, TX 76043 George L. Edgar, Esq.
Morgan Lewis 1111 Pennsylvania Avenue, NW Washington, DC 20004 County Judge P. O. Box 851 Glen Rose, TX 76043 Environmental and Natural Resources Policy Director Office of the Governor P. O. Box 12428 Austin, TX 78711-3189 Mr. Richard A. Ratliff, Chief Bureau of Radiation Control Texas Department of Health 1100 West 49th Street Austin, TX 78756-3189 Mr. Brian Almon Public Utility Commission William B. Travis Building P. O. Box 13326 1701 North Congress Avenue Austin, TX 78701-3326 Ms. Susan M. Jablonski Office of Permitting, Remediation and Registration Texas Commission on Environmental Quality MC-122 P. O. Box 13087 Austin, TX 78711-3087 Terry Parks, Chief Inspector Texas Department of Licensing and Regulation Boiler Program P. O. Box 12157 Austin, TX 78711 Mr. M. R. Blevins Senior Vice President
& Chief Nuclear Officer TXU Power ATTN: Regulatory Affairs P. O. Box 1002 Glen Rose, TX 76043