ML11298A085

Project, Units 1 and 2 - Response to Requests for Additional Information for License Renewal Application (TAC No. ME4938 and ME5122)

ML11298A085
Person / Time
Site:	South Texas
Issue date:	10/18/2011
From:	Powell G T South Texas
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NOC-AE-1102748, TAC ME4938, TAC ME5122
Download: ML11298A085 (4)

Text

ALI,/WAM Nuclear Operating Company South Texas Pro/ect Electric GeneratinS Station PO. Bar 289 Wadsworth.

Texas 77483 x* n*October 18, 2011 NOC-AE-1 1002748 10CFR54 STI: 33002386 File: G25 U. S. Nuclear Regulatory Commission Attention:

Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852-2746 South Texas Project Units 1 and 2 Docket Nos. STN 50-498, STN 50-499 Response to Requests for Additional Information for the South Texas Project License Renewal Application (TAC No. ME4938 and ME5122)

Reference:

1. STPNOC Letter dated October 25, 2010, from G. T. Powell to NRC Document Control Desk, "License Renewal Application", (NOC-AE-1 0002607) (ML1 03010257)2. NRC letter dated September 28, 2011, "Requests for Additional Information for the Review of the South Texas Project License Renewal Application (TAC NOS.ME4938 AND ME5122)(ML1 1269A002)By Reference 1, STP Nuclear Operating Company (STPNOC) submitted the License Renewal Application (LRA) for South Texas Project (STP) Units 1 and 2. By Reference 2, the NRC staff requested additional information regarding clarification on inconsistent labeling of transmission lines.There are no regulatory commitments in this letter.Should you have any questions regarding this letter, please contact either Arden Aldridge, STP License Renewal Project Lead, at (361) 972-8243 or Ken Taplett, STP License Renewal Project regulatory point-of-contact, at (361) 972-8416.I declare under penalty of perjury that the foregoing is true and correct.Executed on ___-_________

Date G. T. Powell Vice President, Generation KJT

Enclosure:

STPNOC Response to Requests for Additional Information NOC-AE-1 1002748 Page 2 cc: (paper copy)(electronic copy)Regional Administrator, Region IV U. S. Nuclear Regulatory Commission 612 East Lamar Blvd, Suite 400 Arlington, Texas 76011-4125 Balwant K. Singal Senior Project Manager U.S. Nuclear Regulatory Commission One White Flint North (MS 8B1)11555 Rockville Pike Rockville, MD 20852 Senior Resident Inspector U. S. Nuclear Regulatory Commission 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 John W. Daily License Renewal Project Manager (Safety)U.S. Nuclear Regulatory Commission One White Flint North (MS 011-Fl)Washington, DC 20555-0001 Tam Tran License Renewal Project Manager (Environmental)

U. S. Nuclear Regulatory Commission One White Flint North (MS O11FO1)Washington, DC 20555-0001 A. H. Gutterman, Esquire Kathryn M. Sutton, Esquire Morgan, Lewis & Bockius, LLP John Ragan Chris O'Hara Jim von Suskil NRG South Texas LP Kevin Polio Richard Pena City Public Service Peter Nemeth Crain Caton & James, P.C.C. Mele City of Austin Richard A. Ratliff Alice Rogers Texas Department of State Health Services Balwant K. Singal John W. Daily Tam Tran U. S. Nuclear Regulatory Commission Enclosure NOC-AE-1 1002748 Page 1 of 2 STPNOC Response to Requests for Additional Information SOUTH TEXAS PROJECT LICENSE RENEWAL APPLICATION REQUESTS FOR ADDITIONAL INFORMATION Issue: Clarification is needed on inconsistent labeling of transmission lines in submitted information.

Back.ground:

Section 2.1.7 of NUREG-1555 Supplement 1, Environmental Standard Review Plan for Operating License Renewal specifies the requirement: "the power transmission system description is consistent, accurate, and given in sufficient detail," for the analysis in the draft supplemental environmental impact statement.

The staff requests clarification since the transmission lines appear to be inconsistently labeled. Section 3.1.3 of STP Nuclear Operating Company's license renewal environmental report describes seven 345-kV lines that connect South Texas Project (STP), Units 1 and 2, to the regional electric grid: Velasco, Blessing, Hillje, Holman, Hill Country, Sky Line, and White Point loop. However, Section 3.7 of the STP combined license environmental report (ER) describes nine 345-kV transmission lines that connect STP, Units 1 and 2, to the regional power grid. The nine lines described are given different names than those in the license renewal application ER: DOW 18, DOW 27, WAP 39, Elm Creek 18, Hillje 64, Blessing 44, Elm Creek 27, Hillje 44, and Whitepoint 39.Requested information:

Please provide the following clarifications: (a) how many lines connect STP to the regional power grid (b) the names of each line STP Response: (a) There are nine 345 kV transmission circuits connecting the STP switchyard to the regional power grid.(b) Figure 8.2-1 of the STP Updated Final Safety Analysis Report shows the nine 345 kV transmission circuits connecting to the STP switchyard.

The nomenclature of the nine lines in Figure 8.2-1 is consistent with the nomenclature in Section 3.7 of the STP combined license environmental report. Section 3.1.3 of the STP Nuclear Operating Company's license renewal environmental report describes the nine (vice seven as stated above) 345 kV transmission circuits that connect to the STP switchyard from the regional electric grid. The following table and notes provide a cross-reference between the transmission circuits described in the combined license environmental report and the transmission circuits described in the license renewal environmental report.

Enclosure NOC-AE-1 1002748 Page 2 of 2 Section 3.7 of the STP Section 3.1.3 of STPNOC Combined License ER License Renewal Environmental Report (ER)DOW 18 and DOW 27 Velasco (two lines) (two lines)Blessing 44 Blessing WAP 39 HillIje (W.A. Parrish Loop)Hillje 64 Hillje (Hillje Line)Hillje 44 Holman Elm Creek 18 Hill Country Elm Creek 27 Skyline Whitepoint 39 Lon Hill loop and White Point loop Clarification Notes: 1. The DOW 18 and DOW 27 lines are the same lines as the Velasco lines described in Section 3.1.3 of the License Renewal Application (LRA) Environmental Report (ER).Section 3.1.3 of the LRA ER states that Velasco is a double line. The Velasco lines are interchangeably named as Velasco iNelasco 2 or DOW 18/DOW 27.2. The Blessing 44 line is the same line as the Blessing line described in Section 3.1.3 of the LRA ER.3. The WAP 39 line is the same line as the Hillje (W.A. Parrish loop) described in Section 3.1.3 of the LRA ER. The W. A. Parrish loop is the same loop as the Hillje (Lon Hill loop)described in Section 3.1.3 of the LRA ER.4. The HilIje 64 line is the same line as the HilIje (Hillje Line) described in Section 3.1.3 of the LRA ER 5. The Hillje 44 line is the same line as the Holman line described in Section 3.1.3 of the LRA ER.6. The Elm Creek 18 line is the same line as the Hill Country line described in Section 3.1.3 of the LRA ER.7. The Elm Creek 27 line is the same line as the Skyline line described in Section 3.1.3 of the LRA ER.8. The Whitepoint 39 line is the part of the pre-existing W. A. Parrish-to-Lon Hill line that was looped into the STP substation described in Section 3.1.3 of the LRA ER. This line transited from the STP substation to the Lon Hill substation.

Subsequently, this line was connected to the White Point substation and the Lon Hill loop was looped into the White Point substation.