Letter Sequence Request |
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TAC:MC3812, Revise Containment Requirements During Handling Irradiated Fuel and Core Alterations (Approved, Closed) |
Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance, Acceptance, Acceptance
- Supplement, Supplement, Supplement
Administration
- Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance
- Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting, Meeting
Results
Other: ML041980222, ML042370100, ML050590036, ML051150191, ML051160036, ML051320148, ML051430036, ML051570381, ML051660602, ML052290397, ML060530185, ML060670304, ML060680586, ML060680590, ML060680596, ML060680599, ML060720253, ML060720272, ML060720273, ML060720281, ML060720293, ML060720295, ML060720298, ML060720303, ML060720354, ML060880464, ML060880469, ML061040217, ML061660002, ML061770163, ML061840027, ML061910705, ML062050056, ML062090482, ML062090555, ML062120411, ML062130163, ML062130343, ML062200277, ML062210102, ML062220647, ML062270240, ML062360160, ML062400472, ML062510022, ML062510371, ML062510374, ML062510382, ML062510385, ML062620064... further results
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MONTHYEARML0607202531975-05-23023 May 1975 May 23, 1975 - Final Summary Report Unit 2 Startup Project stage: Other ML0606805861975-05-23023 May 1975 May 23, 1975 - Final Summary Report Startup, Enclosure 4 Project stage: Other ML0607202721977-05-0909 May 1977 May 9, 1977 - Final Summary Report Unit 3 Startup Project stage: Other ML0606805901977-05-0909 May 1977 May 9, 1977 - Final Summary Report Startup, Enclosure 5 Project stage: Other ML0607202731992-11-30030 November 1992 a Guide for Environmental and Best Management Practices for Tennessee Valley Authority Transmission Construction and Maintenance Activities Project stage: Other ML0607202982001-03-13013 March 2001 Environmental Assessment Bear Creek Reservoirs Land Management Plan Project stage: Other ML0607202952001-03-31031 March 2001 Bear Creek Reservoirs Land Management Plan, Resource Stewardship Bear Creek Watershed Project stage: Other ML0606805992001-03-31031 March 2001 Bear Creek Reservoirs Land Management Plan Project stage: Other ML0419802222004-07-0909 July 2004 Technical Specification 436 - Increased Main Steam Isolation Valve Leakage Rate Limits and Exemption from 10CFR50, Appendix J Project stage: Other ML0423701002004-08-23023 August 2004 Browns Ferry, Ltr, Framatome Proprietary Review Project stage: Other ML0423708492004-08-23023 August 2004 (BFN) - Unit 1- Proposed Technical, Specifications (TS) Change TS - 431 - Request for License Amendment - Extended Power Uprate (EPU) Operation Probabilistic Safety Assessment (PSA) Update Project stage: Request ML0429202832004-11-18018 November 2004 Ltr, Results of Acceptance Review for Extended Power Uprate Project stage: Acceptance Review ML0431004762004-11-18018 November 2004 Ltr, Results of Acceptance Review for EPU Project stage: Acceptance Review ML0433701792004-12-29029 December 2004 RAI Re Extended Power Uprate Project stage: RAI ML0434400452004-12-30030 December 2004 RAI, Extended Power Uprate Project stage: RAI ML0500303612005-01-0606 January 2005 Ltr, Request for Information for Status of Amendment (Tac No. MC1330, MC1427, MC2305, MC3812, MC4070, MC4071, MC4072, MC4161, MC3743, MC3744) Project stage: RAI ML0505900362005-02-16016 February 2005 Enclosure 2, 02/01/2005 Conference Call with TVA Presentation Slides on TS Changes Using Method 3 for Interim Solution Project stage: Other ML0505601502005-02-23023 February 2005 Response to NRC Acceptance Review Letter and Request for Additional Information Related to Technical Specifications Change No. TS-431 - Request for Extended Power Uprate Operation Project stage: Request ML0505603372005-02-23023 February 2005 (BFN) - Response to Nrc'S Acceptance Review Letter and Request for Additional Information Related to Technical Specifications Change No. TS-418 - Request for Extended Power Uprate Operation (Tac Nos MC3743 and MC3744) Project stage: Request ML0607202932005-02-28028 February 2005 Hydrothermal Modeling of Browns Ferry Nuclear Plant with Units 1, 2, and 3 at Extended Power Uprate Project stage: Other ML0606805962005-02-28028 February 2005 Hydrothermal Modeling of Browns Ferry with Units 1, 2, and 3 at Extended Power Uprate Project stage: Other ML0511501912005-04-19019 April 2005 Enclosure 3, Ltr, Licensing Action Status and Interdependencies Project stage: Other ML0511702442005-04-25025 April 2005 (BFN) - Unit 1 - Response to Nrc'S Request for Additional Information Related to Technical Specifications (TS) Change No. TS-431 - Request for Extended Power Uprate Operation Project stage: Request ML0511702422005-04-25025 April 2005 (BFN) - Units 2, and 3 - Response to Nrc'S Request for Additional Information Related to Technical Specifications (TS) Change No. TS-418 - Request for Extended Power Uprate Operation Project stage: Request ML0514300362005-05-20020 May 2005 Response to Nrc'S Letter on Licensing Action Status and Interdependencies, Project stage: Other ML0513201462005-05-27027 May 2005 EPU Acceptance Review Results to Increase Maximum Authorized Power Level (TAC No. MC3743, MC3744) (TS-418) Project stage: Acceptance Review ML0515802492005-06-0606 June 2005 Response to Nrc'S Request for Additional Information Related to Technical Specifications (TS) Change No. TS - 431 - Request for License Amendment Extended Power Uprate (EPU) Operation Project stage: Request ML0516403912005-06-0606 June 2005 Response to Technical Specifications (TS) Change No. TS-418 - Request for License Amendment - Extended Power Uprate (EPU) Operation Project stage: Request ML0517902372005-06-24024 June 2005 Part 21 Notification - Critical Power Determination for G314 and GE12 Fuel with Zircaloy Spacers, 06/24/2005 Project stage: Request ML0513201482005-06-29029 June 2005 Ltr., Ind FRN Facility Operating License for EPU and Opportunity for a Hearing Project stage: Other ML0515703812005-06-29029 June 2005 Fanp, Withholding Information from Public (TACs MC3743, MC3744) Project stage: Other ML0516606022005-06-29029 June 2005 Ltr., Withholding Public Disclosure for GE Company (TACs MC3743, MC3744) Project stage: Other ML0511600362005-07-0101 July 2005 Notice of Consideration of Issuance of Amendment and Notice of Opportunity for a Hearing Regarding Extended Power Uprate (Tac No. MC3743, MC3744) Project stage: Other ML0518703902005-07-0707 July 2005 06/08/05, Meeting Summary with TVA and Framatome Regarding Fuel Analysis Methodology, Enclosure 2, Framatome Presentation Project stage: Meeting ML0520706042005-07-26026 July 2005 Notice of Meeting with Tennessee Valley Authority (TVA) BFN Units 1, 2, and 3, and Sequoyah Units 1 and 2 on Resolution of Instrument Setpoint Concerns Project stage: Meeting ML0524204912005-08-23023 August 2005 Ltr., GE Request for Withholding Information from Public on Steam Dryer Analysis for EPU Conditions Project stage: Withholding Request Acceptance ML0522901442005-09-0202 September 2005 Summary of Meeting with the Tennessee Valley Authority Regarding Plant-Specific Resolution of Instrument Setpoint Concerns Project stage: Meeting ML0522903972005-09-0202 September 2005 TVA Handout Method 3 Issue BFN Proposed Resolution Project stage: Other ML0524303412005-10-0303 October 2005 RAI, Extended Power Uprate (TS-431) (Tac No. MC3812) Project stage: RAI ML0525104462005-10-0303 October 2005 Request for Additional Information Regarding Extended Power Uprate Project stage: RAI ML0535601862005-12-19019 December 2005 Response to NRC Round 2 Request for Additional Information Related to Technical Specifications Change No. TS-418-Request for Extended Power Uprate Operation Project stage: Request ML0535601942005-12-19019 December 2005 Response to NRC Round 2 Requests for Additional Information Related to Technical Specifications Change No. TS-431 - Request for Extended Power Uprate Operation Project stage: Request ML0535601202005-12-22022 December 2005 Request for Additional Information, Information Concerning Extended Power Uprate Project stage: RAI ML0535601772005-12-22022 December 2005 Request for Additional Information, Concerning Extended Power Uprate Project stage: RAI ML0535703412006-01-19019 January 2006 Revised Schedule for Response to Extended Power Uprate Requests for Additional Information Project stage: RAI ML0614502612006-02-0101 February 2006 Response to NRC Request EMEB-B.6 from NRC Round 2 Requests for Additional Information Related to Technical Specification (TS) Change No. TS-431- Request for Extended Power Uprate. Project stage: Request ML0603207332006-02-0101 February 2006 Response to NRC Request EMEB-B.7 from NRC Round 2 Requests for Additional Information Related to Technical Specification (TS) Change No. TS-418 - Request for Extended Power Uprate Project stage: Request ML0603901352006-02-0808 February 2006 Forthcoming Meeting with Tennessee Valley Authority, to Discuss Various Topics Regarding Tva'S Extended Power Uprate Amendment Request for the Browns Ferry Nuclear Plant, Units 1 and 2 and 3 Project stage: Meeting ML0607202812006-02-28028 February 2006 NEDO-33173, Applicability of GE Methods to Expanded Operating Domains. Project stage: Other ML0606203072006-02-28028 February 2006 Technical Specifications Change TS-418 - Response to Request for Additional Information SPSB-A.11 Regarding Extended Power Uprate - Credit for Net Positive Suction Head Project stage: Response to RAI 2005-02-28
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Category:Letter
MONTHYEARML24032A4762024-02-0101 February 2024 Final Report of a Part 21 Evaluation Associated with Starter Contactors for the BFN Unit 1 High Pressure Coolant Injection Suppression Pool Inboard Suction Valve ML24023A2802024-01-23023 January 2024 Final Report of a Deviation or Failure to Comply Associated with a Relay in the Reactor Core Isolation Cooling Condensate Pump CNL-24-017, Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure and Emergency Preparedness Department Procedure Revisions2024-01-17017 January 2024 Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure and Emergency Preparedness Department Procedure Revisions ML24016A3042024-01-16016 January 2024 Final Report of a Part 21 Evaluation Associated with Check Valve 0-CKV-023-0565 for D1 Residual Heat Removal Service Water Pump CNL-23-071, Response to Request for Additional Information Regarding Browns Ferry Nuclear Plant, Units 1, 2, and 3, Inservice Inspection and Augmented Program Interval Revised Request for Alternative 0-ISI-472024-01-11011 January 2024 Response to Request for Additional Information Regarding Browns Ferry Nuclear Plant, Units 1, 2, and 3, Inservice Inspection and Augmented Program Interval Revised Request for Alternative 0-ISI-47 ML24022A1732024-01-0303 January 2024 Receipt and Availability of the Subsequent License Renewal Application ML23319A1992024-01-0303 January 2024 Issuance of Amendment Nos. 333, 356, and 316 Regarding the Technical Specification Surveillance Requirements 3.4.3.2 and 3.5.1.11 Regarding Safety Relief Valves ML23355A2062023-12-21021 December 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation ML23348A3942023-12-14014 December 2023 Interim Part 21 Report of a Potential Deviation or Failure to Comply Associated with Starter Contactors for the High Pressure Coolant Injection Suppression Pool Inboard Suction Valve IR 05000259/20230102023-12-11011 December 2023 Commercial Grade Dedication Inspection Report 05000259/2023010 and 05000260/2023010 and 05000296/2023010 ML23335A0722023-12-0101 December 2023 Interim Report of a Deviation or Failure to Comply Associated with a Relay in the Unit 2 Reactor Core Isolation Cooling Condensate Pump ML23334A2492023-11-30030 November 2023 Site Emergency Plan Implementing Procedure Revision CNL-23-070, Submittal of Fifth 10-Year Interval Inservice Testing Program Plan2023-11-29029 November 2023 Submittal of Fifth 10-Year Interval Inservice Testing Program Plan ML23331A2532023-11-27027 November 2023 Summary Report for 10 CFR 50.9 Evaluations, Technical Specifications Bases Changes, Technical Requirement Manual Changes, and NRC Commitment Revisions CNL-23-067, Central Emergency Control Center Emergency Plan Implementing Procedure Revisions2023-11-27027 November 2023 Central Emergency Control Center Emergency Plan Implementing Procedure Revisions ML23325A1102023-11-21021 November 2023 Anchor Darling Double Disc Gate Valve Commitment Revision ML23320A2542023-11-16016 November 2023 Interim Part 21 Report of a Deviation or Failure to Comply Associated with Check Valve 0-CKV-023-0565 for D1 Residual Heat Removal Service Water Pump IR 05000259/20230032023-11-13013 November 2023 Integrated Inspection Report 05000259/2023003, 05000260/2023003 and 05000296/2023003 IR 05000259/20230402023-11-0202 November 2023 Supplemental Inspection Supplemental Report 05000259 2023040 and Follow-Up Assessment Letter ML23292A2532023-10-18018 October 2023 BFN 2024-301, Corporate Notification Letter (210-day Ltr) ML23282A0022023-10-0606 October 2023 Interim Part 21 Report of a Deviation or Failure to Comply Associated with Check Valve 0-CKV-023-0565 for D1 Residual Heat Removal Service Water Pump ML23278A0122023-10-0505 October 2023 Updated Final Safety Analysis Report, Amendment 30 ML23271A1702023-09-28028 September 2023 Site Emergency Plan Implementing Procedure Revision ML23270A0702023-09-26026 September 2023 SLRA Pre-Application Meeting Summary 09-13-2023 ML23257A1232023-09-22022 September 2023 Administrative Changes to Technical Specification Pages Issued for License Amendment Nos. 332, 355, and 315 CNL-23-061, Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure Revision2023-09-20020 September 2023 Tennessee Valley Authority - Central Emergency Control Center Emergency Plan Implementing Procedure Revision ML23263B1042023-09-20020 September 2023 Special Report 260/2023-001 for Inoperable Post Accident Monitoring (PAM) Instrumentation ML23205A2132023-09-0808 September 2023 Issuance of Amendment Nos. 332, 355, and 315 Regarding the Revision of Technical Specifications to Adopt TSTF-566-A and TSTF-580-A, Rev. 1 CNL-23-057, Central Emergency Control Center Emergency Plan Implementing Procedure Revisions. Includes CECC-EPIP-1, Revision 76 and CECC-EPIP-9, Revision 642023-09-0505 September 2023 Central Emergency Control Center Emergency Plan Implementing Procedure Revisions. Includes CECC-EPIP-1, Revision 76 and CECC-EPIP-9, Revision 64 IR 05000259/20230052023-08-29029 August 2023 Updated Inspection Plan for Browns Ferry Nuclear Plant, Units 1, 2 and 3 - Report 05000259/2023005, 05000260/2023005 and 05000296/2023005 ML23233A0432023-08-18018 August 2023 Enforcement Action EA-22-122 Inspection Readiness Notification ML23219A1542023-08-17017 August 2023 Request to Use Later Edition of ASME Code for Operation and Maintenance and Alternative Requests BFN-IST-01 Through 05 for the Fifth 10-Year Interval Inservice Testing Program ML23228A1642023-08-16016 August 2023 Site Emergency Plan Implementing Procedure Revision ML23228A0202023-08-15015 August 2023 (BFN) Unit 1 - Special Report 259/2023-001 for Inoperable Post Accident Monitoring (PAM) Instrumentation IR 05000259/20230022023-08-10010 August 2023 Integrated Inspection Report 05000259/2023002, 05000260/2023002, 05000296/2023002 and 07200052/2023001 ML23192A4472023-07-31031 July 2023 Staff Assessment of Updated Seismic Hazards at TVA Sites Following the NRC Process for the Ongoing Assessment of Natural Hazards Information CNL-23-055, Tennessee Valley Authority - Emergency Preparedness Department Procedure Revision. Includes EPDP-3, Revision 3, Emergency Plan Exercises and Preparedness Drills2023-07-25025 July 2023 Tennessee Valley Authority - Emergency Preparedness Department Procedure Revision. Includes EPDP-3, Revision 3, Emergency Plan Exercises and Preparedness Drills ML23171A8862023-07-24024 July 2023 Issuance of Amend. Nos. 331, 354, and 314; 365 and 359 Regarding Adoption of TSTF-541-A, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated Position ML23201A2182023-07-20020 July 2023 Registration of Use of Cask to Store Spent Fuel (MPC-298 and -299) ML23159A2552023-07-20020 July 2023 Proposed Alternative to the Requirements of the ASME Code Regarding Volumetric Inspection of Standby Liquid Control Nozzles ML23199A3072023-07-18018 July 2023 Site Emergency Plan Implementing Procedure Revision CNL-23-053, Tennessee Valley Authority - Radiological Emergency Plan Revisions2023-07-18018 July 2023 Tennessee Valley Authority - Radiological Emergency Plan Revisions IR 05000259/20233012023-07-18018 July 2023 NRC Operator License Examination Report Nos. 05000259/2023301, 05000260/2023301, and 05000296/2023301 2024-02-01
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Text
R08 060201 714 TVA-BFN-431 February 1, 2006 10 CFR 50.90 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Stop: OWFN P1-35 Washington, D.C. 20555-0001 Gentlemen:
In the Matter of ) Docket No. 50-259 Tennessee Valley Authority )
BROWNS FERRY NUCLEAR PLANT (BFN) - UNIT 1- RESPONSE TO NRC REQUEST EMEB-B. 6 FROM NRC ROUND 2 REQUESTS FOR ADDITIONAL INFOR10TION RELATED TO TECHNICAL SPECIFICATIONS (TS) CHANGE NO. TS-431 - REQUEST FOR EXTENDED POWER UPRATE (TAC No. MC3812)
TVA's letter of December 19, 2005 (Reference 1), provided TVA's response to the NRC Staff's request for additional information, which was submitted to TVA by letter dated October 3, 2005 (Reference 2), in order to support review of the BFN Unit 1 Extended Power Uprate (EPU) license amendment application. TVA's letter noted that the response to NRC Request EMEB-B.6 would be deferred, and that TVA would provide the complete response by February 1, 2006. This letter provides the response to NRC Request EMEB-B.6.
TVA submitted the BFN Unit 1 EPU application to the NRC by letter dated June 28, 2004 (Reference 3). TVA supplemented that application by letters dated February 23, 2005 (Reference 4), April 25, 2005 (Reference 5), and June 6, 2005 (Reference 6).
U.S. Nuclear Regulatory Commission Page 2 February 1, 2006 There are no new regulatory commitments associated with this submittal. If you have any questions concerning this letter, please contact William D. Crouch, Browns Ferry Manager of Licensing and Industry Affairs at (256) 729-2636.
I declare under penalty of perjury that the foregoing is true and correct. Executed on this lt day of February, 2006.
Sincerely, Original Signed by:
William D. Crouch Manager of Licensing and Industry Affairs
References:
- 1. TVA letter, Brian O'Grady to NRC, "Browns Ferry Nuclear Plant (BFN) - Unit 1 - Response to NRC Round 2 Requests for Additional Information Related to Technical Specifications (TS) Change No. TS-431 - Request For Extended Power Uprate Operation (TAC No. MC3812)," dated December.19, 2005
- 2. NRC letter, Margaret H. Chernoff to TVA, "Browns Ferry Nuclear Plant, Unit 1 - Request for Additional Information for Extended power Uprate (TS-431)
(TAC No. MC3812)," dated October 3, 2005
- 3. TVA letter, T. E. Abney to NRC, "Browns Ferry Nuclear Plant (BFN) - Unit 1 - Proposed Technical Specifications (TS) Change TS-431 - Request for License Amendment Extended Power Uprate (EPU) Operation," dated June 28, 2004
- - I U.S. Nuclear Regulatory Commission Page 3 February 1, 2006
- 4. TVA letter, T. E. Abney to NRC, "Browns Ferry Nuclear Plant (BFN) - Unit 1 - Response to NRC's Acceptance Review Letter and Request for Additional Information Related to Technical Specifications (TS) Change No.
TS-431 - Request for Extended Power Uprate Operation, (TAC No. MC3812)," dated February 23, 2005
- 5. TVA letter, T. E. Abney to NRC, "Browns Ferry Nuclear Plant (BFN) - Unit 1 - Response to NRC's Request for Additional Information Related to Technical Specifications (TS) Change No. TS-431 - Request for Extended Power Uprate Operation (TAC No. MC3812)," dated' April 25, 2005
- 6. TVA letter, William D. Crouch to NRC, "Browns Ferry Nuclear Plant (BFN) - Unit 1 - Response to NRC's Request for Additional Information Related to Technical Specifications (TS) Change No. TS-431 - Request For License Amendment - Extended Power Uprate (EPU) Operation (TAC No. MC3812)," dated June 6, 2005
Enclosures:
cc: See page 4
U.S. Nuclear Regulatory Commission Page 4 February 1, 2006 Enclosures cc (Enclosures):
State Health Officer Alabama Department of Public Health RSA Tower - Administration Suite 1552 P.O. Box 303017 Montgomery, Alabama 36130-3017 Chairman Limestone County Commission 310 West Washington Street Athens, Alabama 35611 (Via NRC Electronic Distribution)
Enclosures cc (Enclosures):
U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, Georgia 30303-8931 Mr. Stephen J. Cahill, Branch Chief U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, Georgia 30303-8931 NRC Unit 1 Restart Senior Resident Inspector Browns Ferry Nuclear Plant 10833 Shaw Road Athens, Alabama 35611-6970 cc: continued page 5
U.S. Nuclear Regulatory Commission Page 5 February 1, 2006 Enclosure cc (Enclosures):
Margaret Chernoff, Project Manager U.S. Nuclear Regulatory Commission (MS 08G9)
One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739 Eva A. Brown, Project Manager U.S. Nuclear Regulatory Commission (MS 08G9)
One.White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739
U.S. Nuclear Regulatory Commission Page 6 February 1, 2006 JEM:TLE:BAB Enclosure cc (Enclosures):
B. M. Aukland, POB 2C-BFN.
M. Bajestani, NAB lA-C A. S. Bhatnagar, LP 6A-C J. C. Fornicola, LP 6A-C R. G. Jones, POB 2C-BFN R. F. Marks, Jr., PAB 1A-BFE G. W. Morris, LP 4G-C B. J. O'Grady, PAB 1E-BFN K. W. Singer, LP 6A-C E. J. Vigluicci, ET 11A-K NSRB Support, LP 5M-C EDMS, WT CA-K S:lic/submit/suba/response UI EMEB B 6.doc
ENCLOSURE TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT UNIT 1 DOCKET NO. 50-259 RESPONSE TO NRC REQUEST ESEB-B. 6 FROM NRC ROUND 2 REQUESTS FOR ADDITIONAL flFOPM 3 TION RELATED TO TECHNICAL SPECIFICATIONS (TS) CHANGE NO. TS-431 - REQUEST FOR EXTENDED POWER UPRATE By letter dated June 28, 2004 (Reference 1), TVA submitted to the NRC a license amendment application requesting authorization for Extended Power Uprate (EPU) operation for Browns Ferry Nuclear Plant (BFN) Unit 1. TVA supplemented that application .by letters dated February 23, 2005 (Reference 2), April 25, 2005 (Reference 3), and June 6, 2005 (Reference 4). By letter dated October 3, 2005 (Reference 5), the NRC Staff transmitted a request for additional information to support its review of the BFN Unit 1 EPU application.
TVA's letter of December 19, 2005 (Reference 6), provided TVA's response to the NRC Staff's request for additional information. TVA's letter noted that the response to NRC Request EMEB-B.6 would be deferred, and that TVA would provide the complete request by February 1, 2006. This enclosure provides the response to NRC Request EMEB-B.6.
NRC Request EMEE-B.6 Section 10.4.3, Main Steam Line, Feedwater and Reactor Recirculation Piping Flow Induced Vibration Testing, of of the June 28, 2004, submittal discusses the plans for vibration monitoring during. initial plant operation for the new EPU operating conditions. Discuss in more detail, the procedures for 'avoiding adverse flow effects during power escalation and after achieving EPU conditions, including, specific hold points and duration, inspections, plant walkdowns, vibration data collection methods and locations, planned data evaluation, and decision criteria for reducing plant power level or initiating plant shutdown.
TVA Reply to EMEB-B.6 Piping and components in the Main-Steam and Feedwater systems will experience flow increases due to EPU and, therefore, will be monitored for steady state.vibration. Additionally, for Unit 1 only, the Reactor Recirculation (RR) system will be monitored since Unit 1 has had RR system piping E-1
modifications implemented during the Restart program, and Unit 1 does not have operating experience above the originally licensed thermal power (OLTP) level, as do Units 2 and 3 at 105% of OLTP.
Steady state vibration monitoring for piping will follow the guidance of ASME Standards and Guides for Operation and Maintenance of Nuclear Power Plants OM-S/G Part 3 (OM-3).
Scope The scope of BFN's flow induced vibration (FIV) monitoring for EPU is as follows:
- the Main steam lines from the outboard containment anchors to the High Pressure Turbine;
- the Feedwater lines from the three Feedwater Pumps to the High Pressure Heaters, then to the outboard containment anchors; and
- small bore piping attached to the Main Steam and Feedwater piping.
TVA's procedures for vibration monitoring will require monitoring, evaluating, and taking prompt action in response to potential adverse flow effects that may result from power uprate operation. These procedures will include:
Hold Points and Duration During a unit's initial power ascension to EPU, vibration data collection and analysis will be performed at power levels below the final, maximum extended power level.
Vibration data is typically collected at. 50%, 75%, 1Q0%,
.105%, 110%, 115% and 120% of originally licensed thermal power (OLTP). The duration of the hold points will be determined by the time required to obtain the specified data, complete the evaluation, and obtain approval to proceed.
E-2
Inspections and Walkdowns Piping classified in OM-3 group 3 outside the drywell will be monitored visually by walkdown or cameras at each test plateau. If visual observation indicates significant vibration, the condition will be evaluated in more detail.
Data Collection Methods and Locations
- a. PIPING INSIDE DRYWELL Main Steam, Feedwater, and Recirculation piping inside the drywell will be monitored using accelerometers or linear voltage differential transformers (LVDTs) and recorded on a data acquisition system (DAS) located outside the drywell. Monitoring locations are based on hydraulic and structural analyses which identified where significant displacements are expected to occur relative to other locations. Branch line locations connected to main line piping which are expected to experience vibration effects were identified by walkdown.
- b. COMPONENTS INSIDE DRYWELL Components inside the drywell will be monitored using accelerometers and recorded on a DAS located outside the drywell. Locations are chosen based upon recent industry experience with component failures during EPU conditions and engineering judgment as to the susceptibility of the components. Currently, 1 Main Steam Isolation Valve (MSIV), 1 Main Steam drain valve, 2 main steam safety relief valves (SRVs), 1 HPCI steam valve, and 1 RCIC steam valve have been selected for monitoring and will be baselined during the upcoming Unit 3 operating cycle at currently licensed thermal power (CLTP).
- c. PIPING OUTSIDE THE DRYWELL Main Steam piping from the outboard containment anchors to the high pressure turbine and Feedwater piping from the Feedwater Pumps to the High Pressure Heaters, and from the High Pressure Heaters to the outboard containment anchors will be monitored using remote sensors and DAS equipment or with hand held vibration monitors depending upon accessibility. Monitoring locations are based on hydraulic and structural analyses which identified where significant displacements are expected to occur relative to other locations. Branch line locations connected to main line piping which are expected to experience vibration effects were identified by walkdown.
E-3
Planned Data Evaluation Piping within the scope is classified into one of 3 groups defined in OM-3 depending upon the degree of rigor required to assess the affects of vibration. The effects prediction analysis, vibration data gathering, data analysis, and acceptance criteria for .BFN's program are based on OM-3 requirements for the appropriate group. Testing procedures will contain criteria consistent with the appropriate 01-3 group. Data taken at each test plateau will be evaluated and compared to the acceptance criteria in the procedure prior to proceeding to the next power plateau.
Decision Criteria For Reducing Plant Power Level Or Initiating Plant Shutdown In the event that measured vibrations'at a given power level exceed the acceptance criteria, an evaluation will be performed to disposition the test deficiency. If appropriate, the power level would be reduced to a level where vibration amplitudes were previously shown to be acceptable until the deficiency is corrected.
References:
- 1. TVA letter, T. E. Abney to NRC, "Browns Ferry Nuclear Plant (BFN) - Unit l - Proposed Technical Specifications (TS) Change TS-431 - Request for License Amendment Extended Power Uprate (EPU) Operation," dated June 28, 2004
- 2. TVA letter, T. E. Abney to NRC, "Browns Ferry Nuclear Plant (BFN) - Unit 1 - Response to NRC's Acceptance Review Letter and Request for Additional Information Related to Technical Specifications (TS) Change No. TS-431- Request for Extended Power Uprate Operation, (TAC No. MC3812), "
dated February 2j, 2005
- 3. TVA letter, T. E. Abney to NRC, "Browns Ferry Nuclear Plant (BFN). - Unit 1 - Response to NRC's Request for Additional Information Related to Technical Specifications (TS) Change No. TS-431 - Request for Extended'Power Uprate Operation (TAC No. MC3812)," dated April 25, 2005 E-4
- 4. TVA letter, William D. Crouch to NRC, "Browns Ferry Nuclear Plant (BFN) - Unit 1 - Response to NRC's Request for Additional Information Related to Technical Specifications (TS) Change No. TS-431 - Request For License Amendment - Extended Power Uprate (EPU) Operation (TAC No. MC3812)," dated June 6, 2005
- 5. NRC letter, Margaret H. Chernoff to TVA, "Browns Ferry Nuclear Plant, Unit 1 - Request for Additional Information for Extended power Uprate (TS-431) (TAC No. MC3812)," dated October 3, 2005 X
- 6. TVA letter, Brian O'Grady to NRC, "Browns Ferry Nuclear Plant (BFN) - Unit 1 - Response to NRC Round 2 Requests for Additional Information Related to Technical Specifications (TS) Change No. TS-431 - Request For Extended Power Uprate Operation (TAC No. MC3812)," dated December 19, 2005 .
E-5