ML13161A351
| ML13161A351 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 06/06/2013 |
| From: | James Shea Tennessee Valley Authority |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML13161A351 (4) | |
Text
Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 June 6, 2013 10 CFR 50.54(f)
ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC Browns Ferry Nuclear Plant, Unit 2 Facility Operating License No. DPR-52 NRC Docket No. 50-260
Subject:
Tennessee Valley Authority (TVA) - Supplemental Response to NRC Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding the Flooding Aspects of Recommendation 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident for Browns Ferry Nuclear Plant, Unit 2
References:
- 1. NRC Letter, "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident," dated March 12, 2012
- 2. TVA Letter to NRC, "Tennessee Valley Authority (TVA) - Fleet Response to NRC Request for Information Pursuant to Title 10 of the Code of Federal Regulations 50.54(f) Regarding the Flooding Walkdown Results of Recommendation 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident," dated November 27, 2012 On March 12, 2012, the NRC issued Reference 1 to all power reactor licensees and holders of construction permits in active or deferred status. Enclosure 4 of Reference 1 requested that each licensee perform flood protection walkdowns and report the results within 180 days of NRC endorsement of the flooding walkdown procedure (Nuclear Energy Institute (NEI) 12-07, "Guidelines for Performing Verification Walkdowns of Plant Flood Protection Features"). TVA completed the flood protection walkdowns at Browns Ferry Nuclear Plant (BFN), Units 1, 2, and 3 and submitted the results in Reference 2. Reference 2 contained open items for BFN, Unit 2, where restricted access prevented walkdown of certain flood protection features. Walkdowns of the restricted access items for BFN, Unit 2, have been Printed on recycled paper
U.S. Nuclear Regulatory Commission Page 2 June 6, 2013 completed and this letter provides the results. This submittal closes the open items identified in Reference 2, Commitment Number 1.
The enclosed table provides a list of the BFN, Unit 2, restricted access items inspected, their respective disposition, and any action planned or taken. As a result of the inspections:
There were 6 deficiencies found and all were entered into the Plant's Corrective Action Program (CAP).
" The 6 deficiencies were corrected under the CAP program. No temporary measures were required as a result of the completed inspections.
Available Physical Margins (APMs) were collected and documented in the walkdown record forms for each applicable item inspected in accordance with NEI 12-07.
All Restricted Items inspected were within the plant maintenance and monitoring programs.
There are no new regulatory commitments contained in this letter. If you have questions regarding this matter, please contact Kevin Casey at (423) 751-8523.
I declare under penalty of perjury that the foregoing is true and correct. Executed on the 6th day of June 2013, Respe
- Ily, J.W*
hea Vic P sident, Nuclear Licensing Enclosure Fukushima Near-Term Task Force Recommendation 2.3: Flooding - Walkdown Report Open Items for Browns Ferry Nuclear Plant, Unit 2 cc (Enclosure):
NRC Regional Administrator - Region II NRR Director - NRC Headquarters NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRR Project Manager - Browns Ferry Nuclear Plant
ENCLOSURE I Fukushima Near-Term Task Force Recommendation 2.3: Flooding Walkdown Report Open Items for Browns Ferry Nuclear Plant, Unit 2 E-1 of 2
Walkdown Report Open Items for Browns Ferry Nuclear Plant, Unit 2 Item Feature Description Report Deficiency Deficiency Description Actions Taken or Inaccessible Number Reference (yes/no)
Planned (yes/no, if yes, explain below) 1 Steam Vault Flood Wall - Main Steam 7.0 Yes Gap in sealant between Penetration sealed in No Line 2A Penetration pipe and embedded plate accordance with plant drawings 2
Steam Vault Flood Wall - Main Steam 7.0 Yes Cracked sealant Penetration sealed in No Line 2B Penetration accordance with plant drawings 3
Steam Vault Flood Wall - Main Steam 7.0 Yes Cracked sealant Penetration sealed in No Line 2C Penetration accordance with plant drawings 4
Steam Vault Flood Wall - Main Steam 7.0 Yes No sealant observed Penetration sealed in No Line 2D Penetration accordance with plant drawings 5
Steam Vault Flood Wall - Main Steam 7.0 Yes No sealant observed Penetration sealed in No Piping Drain Line Penetration accordance with plant drawings 6
Steam Vault Flood Wall - HPCI and 7.0 Yes No sealant observed Penetration sealed in No RCIC Steam Supply Trap Penetration accordance with plant I drawings E-2 of 2