CNL-15-116, Ninth Progress Update on Improved Flood Mitigation System Project

Ninth Progress Update on Improved Flood Mitigation System Project

ML15181A398
Person / Time
Site:	Watts Bar, Sequoyah
Issue date:	06/30/2015
From:	James Shea Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CNL-15-116
Download: ML15181A398 (3)

Text

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 CNL-15-116 June 30, 2015 10 CFR 50.4 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Sequoyah Nuclear Plant, Units 1 and 2 Facility Operating Licenses Nos. DPR-77 and DPR-79 NRC Docket Nos. 50-327 and 50-328 Watts Bar Nuclear Plant, Unit 1 Facility Operating License No. NPF-90 NRC Docket No. 50-390 Watts Bar Nuclear Plant, Unit 2 Construction Permit No. CPPR-92 NRC Docket No. 50-391

Subject:

Ninth Progress Update on Improved Flood Mitigation System Project

References:

1. Letter from TVA to NRC, Commitment to Install Improved Flood Mitigation Systems, dated April 16, 2013 (ML13108A107)

2. Letter from TVA to NRC, Progress Update on Improved Flood Mitigation System Project, dated July 1, 2013 (ML13189A135)

By letter dated April 16, 2013, Tennessee Valley Authority (TVA) committed to install improved flood mitigation systems at the Sequoyah Nuclear Power Plant (SQN), Units 1 and 2, and the Watts Bar Nuclear Plant (WBN), Units 1 and 2 (Reference 1). TVA committed to complete implementation of the improved flood mitigation systems at SQN and WBN by December 31, 2016. TVA also committed to provide periodic written updates regarding the progress of the project. The most recent update was in a letter from TVA to NRC dated March 30, 2015 (ML15098A199).

The purpose of this letter is to provide the ninth written update regarding the progress of the improved flood mitigation system project consistent with Commitment 2 in Enclosure 2 of the Reference 1 letter and Commitment 1 in Enclosure 2 of the Reference 2 letter.

U.S. Nuclear Regulatory Commission CNL-15-116 Page 2 June 30, 2015 During a June 27, 2013 public meeting and in the first update (Reference 2), TVA advised the NRC that engineering design and project controls for the project were being developed consistent with TVAs existing design and project management procedures. The Project Status Schedule, provided in Table 1 of this letter, lists the major tasks associated with the design and project controls developed to implement the flood mitigation system. Table 1 is used to provide the overall status of the improved flood mitigation system project each quarter. The status of the Table 1 tasks from March 20, 2015, to June 20, 2015 is provided below.

Task 5, Conduct Engineering Design Phase - Continues in-progress, however the scheduled finish date is revised from 07/31/15 to 10/30/15. This revised scheduled finish date is due to delays in receiving vendor information to support the system design.

Task 6, Procure Long-Lead Items - Complete.

Task 7, Implementation - Revised scheduled start date from 08/03/15 to 09/15/15, due to predecessor Task 5 revised scheduled finish date. No impact to the Task 7 scheduled finish date.

Overall, the project remains on schedule to complete by December 15, 2016.

TABLE 1 PROJECT STATUS SCHEDULE (updates shown in bold text)

Scheduled Scheduled Task Start Finish Status 1 Team Organization Structure 05/29/13 Complete 2 Develop Project Plan 10/30/13 Complete 3 Perform Conceptual Design Phase 10/30/13 Complete 4 Perform Preliminary Design Phase 04/30/14 Complete 5 Conduct Engineering Design Phase 05/01/14 10/30/15 In-Progress 6 Procure Long-Lead Items 11/01/14 10/21/15 Complete 7 Implementation 09/15/15 12/15/16 Not Started

U.S. Nuclear Regulatory Commission CNL-15-116 Page3 June 30, 2015 TVA will provide the tenth quarterly written progress update regarding the improved flood mitigation system project by September 30, 2015, consistent with Commitment 2 in of TVA's letter to NRC dated April 16, 2013 (Reference 1).

There are no new regulatory commitments contained in this letter.

If additional information is needed regarding this update, please contact Russell Thompson at (423) 751-2567.

Respectfully, J~~ ~)wc4q Vice President, Nuclear Licensing cc:

NRR Director- NRC Headquarters NRC Regional Administrator - Region II NRC Senior Resident Inspector- Sequoyah Nuclear Plant NRC Senior Resident Inspector- Watts Bar Nuclear Plant NRR Project Manager - Sequoyah Nuclear Plant NRR Project Manager - Watts Bar Nuclear Plant, Unit 1 NRR Project Manager - Watts Bar Nuclear Plant, Unit 2