ML13276A048

Sequoyah and Watts Bar, Units 1 and 2 - Second Progress Update on Improved Flood Mitigation System Project

ML13276A048
Person / Time
Site:	Watts Bar, Sequoyah
Issue date:	09/30/2013
From:	Shea J W Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML13276A048 (4)

Text

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402September 30, 201310 CFR 50.4ATTN: Document Control DeskU.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Sequoyah Nuclear Plant, Units 1 and 2Facility Operating Licenses Nos. DPR-77 and DPR-79NRC Docket Nos. 50-327 and 50-328Watts Bar Nuclear Plant, Unit 1Facility Operating License No. NPF-90NRC Docket No. 50-390Watts Bar Nuclear Plant, Unit 2Construction Permit No. CPPR-92NRC Docket No. 50-391

Subject:

Second Progress Update on Improved Flood Mitigation System Project

References:

1. Letter from TVA to NRC, "Commitment to Install Improved FloodMitigation Systems,"

dated April 16, 20132. Letter from TVA to NRC, "Progress Update on Improved Flood Mitigation System Project,"

dated July 1, 2013By letter dated April 16, 2013, the Tennessee Valley Authority (TVA) committed to installimproved flood mitigation systems at the Sequoyah Nuclear Power Plant (SQN), Units 1 and2, and the Watts Bar Nuclear Plant (WBN), Units 1 and 2 (Reference 1). TVA committed tocomplete implementation of the improved flood mitigation systems at SQN and WBN byDecember 31, 2016. TVA also committed to provide periodic written updates regarding progress of the project.

During a public meeting on June 27, 2013, TVA briefed the NRCregarding the status of the improved flood mitigation project and provided the first progressupdate on July 1, 2013 (Reference 2). TVA also committed in the first progress update(Reference 2), to develop a set of major tasks through TVA's engineering design and projectcontrols processes and to discuss these major tasks as part of the periodic written progressupdates.The purpose of this letter is to provide the second written progress update regarding progress of the improved flood mitigation system project consistent with Commitment 2 inEnclosure 2 of the Reference 1 letter and Commitment 1 in Enclosure 1 of the Reference 2letter.Printed on recycled paper U.S. Nuclear Regulatory Commission Page 2September 30, 2013During the June 27, 2013, public meeting and in the first update (Reference 2), TVA advisedthe NRC that engineering design and project controls for the project are being developed consistent with TVA's existing design and project management procedures.

The ProjectStatus Schedule, provided in Table 1 on page 3 of this letter lists the major tasks associated with-the design and project controls developed to implement the flood mitigation system.Table 1 will be used to provide the overall status of the improved flood mitigation systemproject each quarter.

The status of the Table 1 tasks from July 1, 2013 to September 20,2013, is provided below." Task 2, Develop Project Plan, and Task 3, Perform Conceptual Design Phase,scheduled completion is revised from September 30, 2013, to October 30, 2013. Thefollowing actions have been completed:

a. Joint project team formedb. Project Charter developed and comments are being resolvedc. Cost estimate and schedule has been developed for the Conceptual DesignPhased. Project approval package for the Conceptual Design Phase has been preparede. The Project Approval Board (PAB) has granted authorization to fund theConceptual Design PhaseA plan is being developed for Tasks 2 and 3 to maintain the scheduled completion ofTask 4.* Task 4, Perform Preliminary Design Phase, has begun. For Task 4, the following actions have been completed:

a. Design Criteria have been approved and issued for SQN and are under reviewfor WBNb. Statement of work for the Preliminary Engineering Phase is drafted and isexpected to be released to the prospective bidders in October 2013c. Procurement strategy has been developed for the Final Engineering andImplementation Phase -Firm Fixed Price Design, Build, and TestThe following Task 4 actions are scheduled to be completed betweenSeptember 21, 2013 and February 27, 2014:a. Develop 10% Design Packageb. Vendor Selection for Design/Build Contractc. Detailed Cost and Schedule development

d. Risk identification and risk mitigation planninge. Project Plans (Project Management, Communication, and Risk Management)

National Environmental Policy Act (NEPA) screening U.S. Nuclear Regulatory Commission Page 3September 30, 2013TVA noted in the June 27, 2013, public meeting and in Reference 2, that since issuance ofthe April 16, 2013 letter, potential design alternatives had emerged for a number of elementsof the overall flood mitigation system design as described in Enclosure 1 of Reference

1. Todate, progress in the following design areas has been made:1. The SQN FLEX Equipment Storage Building is being designed to include the floodmode equipment.

2. For the flood mode equipment, dedicated diesel generators will be procured andinstalled in lieu of using the FLEX 3 MW diesels for power.TABLE 1PROJECT STATUS SCHEDULE(updates shown in bold type)Scheduled Scheduled Task Start Finish Status U.S. Nuclear Regulatory Commission Page 4September 30, 2013TVA will provide the third quarterly written progress update of the improved flood mitigation system project by December 31, 2013, consistent with Commitment 2 in Enclosure 2 ofTVA's letter to NRC dated April 16, 2013.There are no new regulatory commitments contained in this letter.If you have questions regarding this update, please contact Kevin Casey at (423) 751-8523.

Res ully,J .Sheaice President, Nuclear Licensing cc

NRC Regional Administrator

-Region IINRR Director

-NRC Headquarters NRC Senior Resident Inspector

-Sequoyah Nuclear PlantNRC Senior Resident Inspector

-Watts Bar Nuclear PlantNRR Project Manager -Sequoyah Nuclear PlantNRR Project Manager -Watts Bar Nuclear Plant, Unit INRR Project Manager -Watts Bar Nuclear Plant, Unit 2