Letter Sequence Approval |
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TAC:M83348, (Approved, Closed) TAC:M83349, (Approved, Closed) TAC:M83350, (Approved, Closed) TAC:M99711, (Approved, Closed) TAC:M99712, (Approved, Closed) |
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MONTHYEARML18036A8041992-07-31031 July 1992 Insp Repts 50-259/92-24,50-260/92-24 & 50-296/92-24 on 920617-0717.Violations Noted.Major Areas Inspected: Surveillance Operation,Maint Operation,Operational Safety Verification,Unit 2 Preoutage Work & Unit 1 Activities Project stage: Request ML20128E8771993-01-29029 January 1993 Informs That Util Proposed Corrective Actions to re-establish Operability of Control Room Emergency Ventilation Sys May Not Be Acceptable for Listed Reasons Project stage: Other ML20034F7071993-03-0101 March 1993 Forwards Response to NRC 930129 Request for Addl Info Re Control Room Emergency Ventilation Sys Corrective Actions Project stage: Request ML20044G1151993-05-18018 May 1993 Forwards Suppl to 920731 & s Containing Proposed Resolution of Previously Identified Deficiencies W/Crevs, Consisting of Comparison Between Previous CREVS & Current CREVS & Latest Surveillance Test Results Project stage: Other ML18037B0171994-08-10010 August 1994 Forwards Description of Util Methods for Evaluating Potential Release Paths & Determining Release Specific Atmospheric Dispersion Coefficients,In Response to NRC 940429 RAI Re BFN Meteorological Data Project stage: Other ML18039A2491998-02-18018 February 1998 Forwards RAI Re TS Change TS-384 Request for License Amend for Power Uprate Operation & Resolution of Control Room Emergency Ventilation Sys Issues Project stage: RAI ML20216G4401998-03-13013 March 1998 Forwards Request for Addl Info Re 971001 Proposed Rev to Plants,Units 2 & 3 TSs to Permit Operation of Units at Uprated Power Level of 2458 Mwt Project stage: RAI ML18039A2761998-03-30030 March 1998 Forwards Request for Addl Info Re Proposed Revisions to Browns Ferry Nuclear Plant,Units 2 & 3 TSs to Permit Operation of Units at Uprated Power Level of 3458 Mwt Project stage: RAI ML20217P4131998-04-0101 April 1998 Provides Addl Info Requested by NRC in Support of TS-384 & Resolution of Crev Sys Issues.Response to 980218 NRC RAI for Both 971001,proposed Change & 920731 CREVS Issue Ltr,Encl Project stage: Request 05000296/LER-1998-001, :on 980121,determined That Temp Sensors for Certain HELB May Not Detect All Possible Break Locations. Caused by Differences in Computer Codes Rather than Actual Response.Computer Code Correctly Utilized1998-04-0101 April 1998
- on 980121,determined That Temp Sensors for Certain HELB May Not Detect All Possible Break Locations. Caused by Differences in Computer Codes Rather than Actual Response.Computer Code Correctly Utilized
Project stage: Request ML18039A3231998-04-22022 April 1998 Forwards Request for Addl Info Re Util 971001 Proposed Revs to TS to Permit Operation of Units at Unrate Power Level of 3,458 Mwt.Response Requested by 980515 Project stage: RAI ML20217Q6831998-05-0101 May 1998 Provides Supplemental Response to ,In Which Util Provided Addl Info Requested by NRC in Support of TS-384 & Resolution of Crev Sys Issues Project stage: Supplement ML20216C7811998-05-0707 May 1998 Forwards RAI Re Plant Units 2 & 3 Re TS Change Number TS-384 Power Uprate Operation.Required Info Requested to Be Provided No Later than 980605 Project stage: RAI ML18039A3591998-05-20020 May 1998 Provides Addl Info Requested by NRC in Support of TS-384. Encl 1 Provides Util Response to 980313 NRC RAI for 971001, Proposed TS Change Project stage: Other ML20248F1581998-05-27027 May 1998 Summary of 980520 Meeting W/Tva Re Browns Ferry Nuclear Plant License Amend Request for Power Uprate & Primarily Focused on Instrumentation Issues Project stage: Meeting ML18039A3701998-06-0303 June 1998 Requests Addl Info Re TS Change TS-384 to Permit Operation of Units at Uprated Power Level of 3458 Mwt Project stage: Other ML18039A3801998-06-0909 June 1998 Expresses NRC Concerns Re Completeness & Timeliness of Util Responses to Requests for Addl Info Concerning License Amend Request for Power Uprate & Impact on Schedule for Review Project stage: Other ML18039A3891998-06-12012 June 1998 Provides Response to Request for Addl Info Re Units 2 & 3 TS Change TS-384 for Power Update Operation Project stage: Request ML18039A3991998-06-17017 June 1998 Submits Response to NRC 980603 RAI Re Browns Ferry Nuclear Plant 971001 Proposed TS Change for Power Uprate Operation Project stage: Other ML18039A4141998-06-26026 June 1998 Submits Supplemental Info & Response to NRC 980313 RAI Re Units 2 & 3 TS Change TS-384 on Power Uprate Operation Project stage: Supplement ML20236Q6591998-07-10010 July 1998 Summary of 980709 Meeting W/Tva Re Browns Ferry Nuclear Plant License Amend Request for Power Uprate.List of Attendees & Request for Addl Info,Encl Project stage: RAI ML18039A4541998-07-24024 July 1998 Provides Proprietary & non-proprietary Info in Response to Issues Discussed at 980709 Meeting Re TS-384 Which Would Allow Plants to Operate at Uprated Power Level of 3,458 Mwt. Proprietary Info Withheld Project stage: Meeting ML20236X4251998-08-0404 August 1998 Forwards Input to SE Being Prepared for Browns Ferry Units 2 & 3 Proposed Power Uprate License Amend Project stage: Other ML18039A4731998-08-11011 August 1998 SE Re Corrective Action Plan for Resolution of CREVS Issues for Plant Project stage: Other ML18039A4711998-08-11011 August 1998 Forwards SE Re Corrective Action Plan for Resolution of CREVS Issues for Plant.Staff Finds Reasonable Assurances That Plant CR Will Provide Adequate Protection from Radiation Exposures in Excess of 5 Rem Whole Body Project stage: Approval ML18039A4971998-09-0101 September 1998 Proposes Listed License Condition for Units 2 & 3 Power Uprate Based on 980828 Telcon Re Operator Training with NRC BFN Project Manager Project stage: Other ML18039A7421999-03-30030 March 1999 Provides Results of Analysis of Design Basis Loca,As Required by License Condition Re Plants Power Uprate Operating License Amends 254 & 214 Project stage: Other ML18039A7911999-05-24024 May 1999 Informs That by Meeting Test Criteria Established by Test Based on Ansi/Ans 3.5-1985 (License Amends 254 & 214) power- Uprate Simulation Acceptable for Operator Training Project stage: Meeting 1998-05-27
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.c. 2055~1 August ll, 1998 Mr. J. A. Scalice Chief Nuclear Officer And Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801
SUBJECT:
STAFF EVALUATIONRE: CORRECTIVE ACTION PLAN FOR RESOLUTION OF CONTROL ROOM EMERGENCY VENTILATIONSYSTEM ISSUES FOR BROWNS FERRY NUCLEAR PLANT UNITS 1, 2 AND 3 (TAC NOS. M99711, M99712, M83348, M83349, AND M83350)
Dear Mr.Scaiice:
This letter documents our evaluation of your corrective actions relating to the control room emergency ventilation system (CREVS) at Browns Ferry Nuclear Plant (BFN) Unit Nos. 1, 2 and 3.
Based on the information provided by the Tennessee Valley Authority relating to the control room habitability corrective action plan, the staff finds that there is reasonable assurance that the BFN control room will provide adequate radiological protection such that control room personnel willnot receive radiation exposures in excess of 5 rem whole body, or its equivalent to any part of the body, from postulated accidents occurring at Units 2 or 3. Our evaluation is attached.
This completes our effort under technical assignment control (TAC) nos. M83348, M83349, and M83350 and the TACs are closed.
Sincerely, L. Raghavan, Senior Project Manager Project Directorate II-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket Nos. 50-259 50-260 50-296
Enclosure:
As stated cc w/enclosure:
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