ML043010243

Summary of Meeting with Txu to Discuss Its Plants for Replacement of Steam Generators

ML043010243
Person / Time
Site:	Comanche Peak
Issue date:	10/27/2004
From:	Thadani M NRC/NRR/DLPM/LPD4
To:
Thadani M, NRR/DLPM, 415-1476
Shared Package
ML043030293	List: ML043010243
References
TAC MC4237, TAC MC4238
Download: ML043010243 (5)

Text

October 27, 2004 LICENSEE:

TXU Generation Company, LP FACILITY:

Comanche Peak Steam Electric Station, Unit 1

SUMMARY

OF OCTOBER 19, 2004, MEETING WITH TXU GENERATION COMPANY, LP, TO DISCUSS ITS PLANS FOR REPLACEMENT OF STEAM GENERATORS AT THE COMANCHE PEAK STEAM ELECTRIC STATION (CPSES), UNIT 1 (TAC NO. MC4237)

On October 19, 2004, the U. S. Nuclear Regulatory Commission (NRC) staff met with the representative of TXU Generation Company, LP (TXU, the licensee), to hear TXUs briefing on its plans for replacement of the current Westinghouse D-4 steam generators (SGs) with integral preheaters. A list of meeting attendees is provided as Enclosure 1.

The TXU staff outlined its plans to replace the current Westinghouse D-4 SGs with proposed Delta 76 SGs incorporating a feed ring design. The proposed replacement SGs (RSGs) are similar to the Delta 75 SGs that were installed at the Shearon Harris and V.C. Summer plants.

The proposed RSGs each incorporate Alloy 690 U-tubes and will be fabricated by Equipos Nucleares, S.A. of Spain.

Specifically, TXU discussed the design features, compared the design features with the current Westinghouse D-4 SGs, outlined the changes to operating strategies for RSGs, and discussed the Updated Final Safety Analysis Chapter 15 changes in analytical methods regarding postulated accidents. The licensees viewgraphs are included as Enclosure 2 and are placed in the Agencywide Documents Access and Management System (ADAMS) (ML042990515)

(Note: Public access to ADAMS has been temporarily suspended so that security reviews of publicly available documents may be performed and potentially sensitive information removed.

Please check the NRC Web site for updates on the resumption of ADAMS access.)

The TXU staff discussed its plans to submit topical reports supplements, and to request Technical Specifications (TS) amendments for the NRC staff review and approval. TXU described the following other potential licensing actions:

A general update of radiological dose consequence methodologies to be consistent with Regulatory Guide (RG) 1.195. Results of the analyses will be evaluated by Section 50.59 of Title 10 of the Code of Federal Regulations evaluations.

A general review of other methodologies employed by TXU in the RSG project.

The licensee stated that it plans to submit its topical reports by December 2004, proposed TS amendment requests by fall of 2005, and will request NRC approval of topical reports by the winter of 2006. The license amendment requests will be submitted by spring of 2006, and NRC approvals will be requested by February 2007. The RSGs installation will be completed by spring of 2007.

The NRC staff informed TXU that when following RG 1.195, to update the radiological dose assessment methodologies, the licensee should address the RG 1.196 companion guidance, or provide some other methodology. The NRC staff cautioned that it took four years to develop RG 1.195/RG 1.196 guidance for acceptable methodologies. Approval of adopting some other methodologies will be time consuming. The NRC staff also felt that the use of the guides will have impact on the acceptance criteria that might result in requirements to amend TS.

TXU also asked the NRC staffs preference to have the amendment request for updating TS 5.5.9, and adopting TSTF-449 be submitted separately or simultaneously. At the meeting, the NRC staff deferred the answer to the licensees question, pending discussion with other NRC staff. Subsequently, following discussion with other NRC staff, it was decided that the NRC staff would prefer to receive the two submittals simultaneously.

In response to NRC staffs questions about fabrication, inspection, and quality assurance activities; TXU responded with a 42-slide presentation that addressed the NRC staffs issues.

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. Viewgraphs cc w/encls: See next page The NRC staff informed TXU that when following RG 1.195, to update the radiological dose assessment methodologies, the licensee should address the RG 1.196 companion guidance, or provide some other methodology. The NRC staff cautioned that it took four years to develop RG 1.195/RG 1.196 guidance for acceptable methodologies. Approval of adopting some other methodologies will be time consuming. The NRC staff also felt that the use of the guides will have impact on the acceptance criteria that might result in requirements to amend TS.

TXU also asked the NRC staffs preference to have the amendment request for updating TS 5.5.9, and adopting TSTF-449 be submitted separately or simultaneously. At the meeting, the NRC staff deferred the answer to the licensees question, pending discussion with other NRC staff. Subsequently, following discussion with other NRC staff, it was decided that the NRC staff would prefer to receive the two submittals simultaneously.

In response to NRC staffs questions about fabrication, inspection, and quality assurance activities; TXU responded with a 42-slide presentation that addressed the NRC staffs issues.

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. Viewgraphs cc w/encls: See next page DISTRIBUTION:

PUBLIC RidsNrrDlpmLpdiv(HBerkow)

GMakar PDIV-1 R/F RidsNrrDlpmLpdiv1(MWebb)

MBlumberg RidsNrrPMMThadani RidsNrrLADBaxley MMitchell RidsOgcRp TMensah RidsRgn4MailCenter(AHowell)

RidsAcrsAcnwMailCenter YHsii RidsNrrDlpm(LMarsh)

MYoder Slides Accession no.ML042990515 Accession No.:ML043010243(Meeting Summary)

Package ML043030293 OFFICE PDIV-1/PM PDIV-1/LA PDIV-1/SC NAME MThadani DBaxley DJaffe for MWebb DATE 10/27/04 10/27/04 10/27/04 OFFICIAL RECORD COPY LIST OF ATTENDEES NAME ORGANIZATION Mohan Thadani NRC Whee Choe TXU Power James Boatwright TXU Power Bob Kidwell TXU Power Y. Gene Hsii NRC Ben Mays TXU Power Matt Yoder NRR Greg Makar NRR Mark Blumberg NRR Fred Madden TXU Power

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 Energy ATTN: Regulatory Affairs P. O. Box 1002 Glen Rose, TX 76043