CNL-15-259, Eleventh Progress Update on Improved Flood Mitigation System Project

Eleventh Progress Update on Improved Flood Mitigation System Project

ML15356A708
Person / Time
Site:	Watts Bar, Sequoyah
Issue date:	12/22/2015
From:	James Shea Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CNL-15-259
Download: ML15356A708 (3)

Text

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 CNL-15-259 December 22, 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, Units 1 and 2 Facility Operating Licenses Nos. NPF-90 and NPF-96 NRC Docket Nos. 50-390 and 50-391

Subject:

ELEVENTH 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 September 25, 2015 (ML15268A570).

The purpose of this letter is to provide the eleventh 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-15-259 Page 2 December 22, 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 September 20, 2015 to December 20, 2015 is provided below.

• Task 5, Conduct Engineering Design Phase - Continues in-progress; revised scheduled finish date from 10/30/15 to 01/29/16, due to Engineering outage support.

• Task 7, Implementation - Revised scheduled start date from 10/05/15 to 03/15/16, due to minor delays in Engineering Design deliverables. 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 01/29/16 In-Progress 6 Procure Long-Lead Items 11/01/14 10/21/15 Complete 7 Implementation 03/15/16 12/15/16 Not Started

U.S. Nuclear Regulatory Commission CNL-15-259 Page 3 December 22, 2015 TVA will provide the twelfth quarterly written progress update regarding the improved flood mitigation system project by March 31, 2016, consistent with Commitment 2 in Enclosure 2 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.

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

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 CNL-15-259 December 22, 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, Units 1 and 2 Facility Operating Licenses Nos. NPF-90 and NPF-96 NRC Docket Nos. 50-390 and 50-391

Subject:

ELEVENTH 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 September 25, 2015 (ML15268A570).

The purpose of this letter is to provide the eleventh 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-15-259 Page 2 December 22, 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 September 20, 2015 to December 20, 2015 is provided below.

• Task 5, Conduct Engineering Design Phase - Continues in-progress; revised scheduled finish date from 10/30/15 to 01/29/16, due to Engineering outage support.

• Task 7, Implementation - Revised scheduled start date from 10/05/15 to 03/15/16, due to minor delays in Engineering Design deliverables. 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 01/29/16 In-Progress 6 Procure Long-Lead Items 11/01/14 10/21/15 Complete 7 Implementation 03/15/16 12/15/16 Not Started

U.S. Nuclear Regulatory Commission CNL-15-259 Page 3 December 22, 2015 TVA will provide the twelfth quarterly written progress update regarding the improved flood mitigation system project by March 31, 2016, consistent with Commitment 2 in Enclosure 2 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.

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