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Category:MEETING MINUTES & NOTES--CORRESPONDENCE
MONTHYEARML20205K4781999-04-0707 April 1999 Summary of 990204 Meeting with TVA Re Util Proposed risk-informed Inservice Insp Program for Browns Ferry Nuclear Plant,Unit 2 Piping & Solicit NRC Preliminary Comments on TVA Proposed Program 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 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 ML20247M9251998-05-18018 May 1998 Summary of 980508 Meeting W/Tva Re Operation of Plant, Status of Several Licensing Actions & Activities Including TVA Plan to Implement Improved STS by 980701 ML20217D4741998-04-20020 April 1998 Summary of 980414 Meeting W/Participants to Discuss Licensee Amend Request for Conversion of Custom TS to Improved Std TS ML20216E8591998-04-14014 April 1998 Summary of 980326 & 27 Meeting W/Util to Discuss Technical & Working Level Nature Re Conversion of Custom TS to Improved Std Ts.List of Attendees Encl IR 05000259/19970041998-02-0606 February 1998 Summary of 980126 Meeting W/Tennessee Valley Authority Re Resolution of Unresolved Issue 50-290/97-04-01 Identified in Insp Rept 50-259/97-04.List of Attendees Encl ML20141H9321997-07-29029 July 1997 Summary of 970722 Meeting W/Tva in Rockville,Md Re Plans for Submittal of License Amends Supporting Power Uprate & 24 Month Fuel Cycles for Mentioned Plant.List of Attendees & TVA Handout Encl ML20141G4061997-06-30030 June 1997 Summary of 970521 Meeting W/Tva in Rockville,Md Re Review of Section 3.3 of Improved TS for Mentioned Plant.List of Attendance & Comments Encl ML20137P3501997-04-0707 April 1997 Summary of 970327 Meeting W/Tva in Rockville,Md Re ECCS Suction Strainers Mod for Plant,Units 1,2 & 3.List of Attendees & Handouts Encl ML20129E5901996-10-24024 October 1996 Summary of 961016 Meeting W/Tva in Rockville,Md Re Recent TVA Efforts to Validate Info in Browns Ferry Updated Final Safety Analysis Rept Prior to Submittal of Periodic Update Planned for 961022.List of Attendees & Handouts Encl ML20129H1091996-10-0202 October 1996 Summary of 960926 Meeting W/Tva in Rockville,Md Re Recent Denial of Emergency TS Amend Request for Bfn.List of Attendees Encl ML20129G7761996-08-0909 August 1996 Summary of 432nd ACRS Meeting on 960612-14 Re Severe Accident Research & Draft Reg Guide DG-1047, Std Format & Content for Application to Renew Nuclear Power Plant Operating Licensees ML20129G6021996-06-26026 June 1996 Summary of 431st ACRS Meeting on 960523-25 Re Potential Ipe/ IPEEE Results to Compare Risk of Current Population of Plants W/Safety Goals,Resolution of Multiple Sys Responses Program Issues & Proposed Rule on Shutdown Operations ML20217D2601996-06-10010 June 1996 Summary of 960521 Meeting W/Listed Attendees Re Completion of Post Restart Issues & Lessons Learned from Restart Process ML18038B3511995-06-0606 June 1995 Trip Rept of 950514-16 Visit to Browns Ferry Nuclear Power Stations Re Blast Evaluation & Subsequent Vehicle Barrier Location ML20058G9441993-12-0707 December 1993 Summary of 931110 Meeting W/Tva in Rockville,Md Re TVA Plans to Improve Quality of Licensing Submittals for Bfn.List of Attendees & Handouts Encl ML20057D0761993-09-27027 September 1993 Summary of 930903 Meeting W/Util in Rockville,Md Re Ways Util Might Improve Quality & Completeness of Plant Licensing Submittals.List of Meeting Attendees & List of Specific Licensing Submittals Discussed During Meeting Encl ML20056F9221993-08-26026 August 1993 Summary of 930803 Meeting W/Util in Rockville,Md Re Proposed Cost Beneficial Security Program Revs at Browns Ferry Nuclear Plant.List of Attendees & Meeting Handouts Encl ML20056D9801993-07-30030 July 1993 Summary of 930720 Meeting W/Util in Rockville,Md to Discuss Plans & Schedule to Implement Improved STS at Plant.Meeting Attendees Listed in Encl 1 ML20056D8341993-05-26026 May 1993 Summary of Operator Reactors Event Meeting 93-18 on 930519 ML20126K4291992-12-30030 December 1992 Summary of 921201 Meeting W/Util in Rockville,Md Re Discussions on Proposed Upgrade of Refueling Floor & RB Radiation Monitoring Equipment,Including Proposed Revs to Plants TS Submitted in Ltr ML20126K4431992-12-30030 December 1992 Summary of 921216 Meeting W/Util in Rockville,Md Re Discussions on Design & Operation of Plant Hardened Wetwell Vent.List of Attendees & Meeting Agenda Encl ML20125D0341992-12-0202 December 1992 Summary of 921015 Meeting W/Util in Rockville,Md Re Util Plans for Conducting Expanded IPE for Plant.List of Attendees & Meeting Handouts Encl ML20058M4491990-08-0808 August 1990 Summary of 900727 Meeting W/Util on Site Re Plant Tour. Restart Status & Condition of Unit 2 Primary Focus of Site Tour.List of Attendees Encl ML20248E0351989-08-0202 August 1989 Summary of 890710,11 & 12 Meetings W/Util at Plant Site Re Electrical Issues,Including Cable Ampacity & Ac/Dc Electrical Distribution Necessary to Support Full Power Operation.Agenda,List of Attendees & Handouts Encl IR 05000259/19890101989-06-29029 June 1989 Summary of 890606 Meeting W/Util in Rockville,Md Re Handling of Clay Pipe Issue & Condition Adverse to Quality Program, Per Findings in Insp Repts 50-259/89-10,50-260/89-10 & 50-296/89-10.List of Attendees & Presentation Slides Encl ML20245K3021989-06-22022 June 1989 Summary of 890615 Meeting W/Util in Rockville,Md Re Proposed Tech Spec Change 251 Dealing W/Table 3.7.A, Primary Containment Isolation Valves ML20247M5061989-05-26026 May 1989 Summary of 890511 Meeting W/Util & Bechtel North American Power in Rockville,Md Re Cable Separation Issue.Tva Presented Results of Reverification Effort Re Data Used in 890314 Meeting.Attendance Roster & Meeting Transcript Encl ML20247K0901989-05-23023 May 1989 Summary of 890517 Meeting W/Inpo Re Similarities & Differences Between Performance Indicator Programs.Detailed Discussion Encl ML20247K1011989-05-16016 May 1989 Summary of 890517 Meeting W/Inpo in Bethesda,Md Re Similarities & Differences Between INPO & NRC Performance Indicators ML20245F2751989-04-24024 April 1989 Summary of 890420 Meeting W/Util in Rockville,Md Re Generic Ltr 88-01 Concerning RWCU Sys Piping Outside Drywell Penetration.List of Attendees & Slides Encl ML20245E0021989-04-21021 April 1989 Summary of 890406 Meeting W/Util at Plant Re Dcrdr Human Engineering Discrepancy Closure Status ML20248G9901989-04-0303 April 1989 Summary of 890315 Meeting W/Util in Rockville,Md Re Util Safe Shutdown Tech Spec Chronology.Licensee Also Discussed App R Implementation Methodology & Outlined Specific Safe Shutdown Program for Unit 2.List of Attendees & Info Encl ML20247E7221989-03-24024 March 1989 Summary of 890314 Meeting W/Util in Rockville,Md Re Presentation on Plant Cable Separation Issues.Util Has Not Yet Documented Approach for Cable Separation Resolution ML20247D0131989-03-22022 March 1989 Summary of 890105 Meeting W/Util in Rockville,Md Re Civil & Seismic Issues,Including Methodology to Address IE Bulletins 79-14 & 79-02.List of Meeting Attendees & Viewgraphs Encl NUREG-1061, Summary of 890217 Meeting W/Util in Rockville,Md Re Resolution of Open Civil/Seismic Issues for Plant.List of Attendees & Slide Presentation Encl1989-03-22022 March 1989 Summary of 890217 Meeting W/Util in Rockville,Md Re Resolution of Open Civil/Seismic Issues for Plant.List of Attendees & Slide Presentation Encl ML20247B3101989-03-22022 March 1989 Summary of 890113 Meeting W/Util in Rockville,Md Re Civil/ Seismic Open Issues.List of Participants & Slides Used in Licensee Presentation Encl ML20236D2021989-03-14014 March 1989 Summary of 890307 Meeting W/Licensee in Rockville,Md to Discuss Licensee Proposed Methodology for Cable Separation. Attendance Roster Listed in Encl 1 & Licensee Viewgraphs in Encl 2 ML20235V0641989-03-0101 March 1989 Summary of 890216 Meeting W/Util in Rockville,Md Re TVA Statistical Methodology on Electrical Cable Separation. Agenda & List of Attendees Encl ML20245H8011989-02-23023 February 1989 Summary of Operating Reactors Events Meeting 89-08 on 890222.Attendee List & Events Discussed & Significant Elements of Events Encl ML20235L8491989-02-15015 February 1989 Summary of 890201-03 & 06 Meetings at Site Re Electrical Cable Installation & Ampacity Issues & Action Plan for Closure.Attendance Rosters & List of Major Items Which TVA Is to Accomplish as Part of Resolution of Cable Issue Encl ML20196E7241988-12-0606 December 1988 Summary of 881130 Meeting W/Util in Rockville,Md Re Cable Separation.Attendance Roster & Viewgraphs Encl ML20154Q5581988-09-29029 September 1988 Summary of 880913 Meeting W/Util at Sequoyah Site to Discuss Browns Ferry Unit 2 Fuel Load.List of Attendees & Viewgraphs Encl ML20207J5411988-09-19019 September 1988 Summary of 880908-09 Meetings W/Util in Rockville,Md to Discuss Resolution of Ieb 79-14 Restart Issues ML20154A7791988-09-0101 September 1988 Summary of 880810 Meeting W/Util in Decatur,Al Re Diesel Generator Concerns Resulting from Restart Test Program.List of Attendees,Agenda & Related Info Encl ML20151Y6301988-08-19019 August 1988 Summary of 880811 Meeting W/Util in Rockville,Md Re Control Room Ventilation Sys.List of Meeting Attendees & Viewgraphs Encl ML20151S8671988-08-0909 August 1988 Summary of 880707 Meeting W/Util at Plant Site Re Fuel Load Issues & Power Ascension Plans.Viewgraphs,Agenda & List of Attendees Encl ML20151R6911988-08-0404 August 1988 Summary of 880721 Meeting W/Util in Rockville,Md Re Plant Electrical Cable Installation.List of Attendees & Viewgraphs Encl ML20151L4521988-07-27027 July 1988 Summary of 880621 Meeting W/Util in Rockville,Md Re Plant Restart Test Program.Meeting Roster,Agenda & Procedures Encl 1999-04-07
[Table view] Category:MEETING SUMMARIES-INTERNAL (NON-TRANSCRIPT)
MONTHYEARML20205K4781999-04-0707 April 1999 Summary of 990204 Meeting with TVA Re Util Proposed risk-informed Inservice Insp Program for Browns Ferry Nuclear Plant,Unit 2 Piping & Solicit NRC Preliminary Comments on TVA Proposed Program 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 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 ML20247M9251998-05-18018 May 1998 Summary of 980508 Meeting W/Tva Re Operation of Plant, Status of Several Licensing Actions & Activities Including TVA Plan to Implement Improved STS by 980701 ML20217D4741998-04-20020 April 1998 Summary of 980414 Meeting W/Participants to Discuss Licensee Amend Request for Conversion of Custom TS to Improved Std TS ML20216E8591998-04-14014 April 1998 Summary of 980326 & 27 Meeting W/Util to Discuss Technical & Working Level Nature Re Conversion of Custom TS to Improved Std Ts.List of Attendees Encl IR 05000259/19970041998-02-0606 February 1998 Summary of 980126 Meeting W/Tennessee Valley Authority Re Resolution of Unresolved Issue 50-290/97-04-01 Identified in Insp Rept 50-259/97-04.List of Attendees Encl ML20141H9321997-07-29029 July 1997 Summary of 970722 Meeting W/Tva in Rockville,Md Re Plans for Submittal of License Amends Supporting Power Uprate & 24 Month Fuel Cycles for Mentioned Plant.List of Attendees & TVA Handout Encl ML20141G4061997-06-30030 June 1997 Summary of 970521 Meeting W/Tva in Rockville,Md Re Review of Section 3.3 of Improved TS for Mentioned Plant.List of Attendance & Comments Encl ML20137P3501997-04-0707 April 1997 Summary of 970327 Meeting W/Tva in Rockville,Md Re ECCS Suction Strainers Mod for Plant,Units 1,2 & 3.List of Attendees & Handouts Encl ML20129E5901996-10-24024 October 1996 Summary of 961016 Meeting W/Tva in Rockville,Md Re Recent TVA Efforts to Validate Info in Browns Ferry Updated Final Safety Analysis Rept Prior to Submittal of Periodic Update Planned for 961022.List of Attendees & Handouts Encl ML20129H1091996-10-0202 October 1996 Summary of 960926 Meeting W/Tva in Rockville,Md Re Recent Denial of Emergency TS Amend Request for Bfn.List of Attendees Encl ML20129G7761996-08-0909 August 1996 Summary of 432nd ACRS Meeting on 960612-14 Re Severe Accident Research & Draft Reg Guide DG-1047, Std Format & Content for Application to Renew Nuclear Power Plant Operating Licensees ML20129G6021996-06-26026 June 1996 Summary of 431st ACRS Meeting on 960523-25 Re Potential Ipe/ IPEEE Results to Compare Risk of Current Population of Plants W/Safety Goals,Resolution of Multiple Sys Responses Program Issues & Proposed Rule on Shutdown Operations ML20217D2601996-06-10010 June 1996 Summary of 960521 Meeting W/Listed Attendees Re Completion of Post Restart Issues & Lessons Learned from Restart Process ML20058G9441993-12-0707 December 1993 Summary of 931110 Meeting W/Tva in Rockville,Md Re TVA Plans to Improve Quality of Licensing Submittals for Bfn.List of Attendees & Handouts Encl ML20057D0761993-09-27027 September 1993 Summary of 930903 Meeting W/Util in Rockville,Md Re Ways Util Might Improve Quality & Completeness of Plant Licensing Submittals.List of Meeting Attendees & List of Specific Licensing Submittals Discussed During Meeting Encl ML20056F9221993-08-26026 August 1993 Summary of 930803 Meeting W/Util in Rockville,Md Re Proposed Cost Beneficial Security Program Revs at Browns Ferry Nuclear Plant.List of Attendees & Meeting Handouts Encl ML20056D9801993-07-30030 July 1993 Summary of 930720 Meeting W/Util in Rockville,Md to Discuss Plans & Schedule to Implement Improved STS at Plant.Meeting Attendees Listed in Encl 1 ML20056D8341993-05-26026 May 1993 Summary of Operator Reactors Event Meeting 93-18 on 930519 ML20126K4431992-12-30030 December 1992 Summary of 921216 Meeting W/Util in Rockville,Md Re Discussions on Design & Operation of Plant Hardened Wetwell Vent.List of Attendees & Meeting Agenda Encl ML20126K4291992-12-30030 December 1992 Summary of 921201 Meeting W/Util in Rockville,Md Re Discussions on Proposed Upgrade of Refueling Floor & RB Radiation Monitoring Equipment,Including Proposed Revs to Plants TS Submitted in Ltr ML20125D0341992-12-0202 December 1992 Summary of 921015 Meeting W/Util in Rockville,Md Re Util Plans for Conducting Expanded IPE for Plant.List of Attendees & Meeting Handouts Encl ML20058M4491990-08-0808 August 1990 Summary of 900727 Meeting W/Util on Site Re Plant Tour. Restart Status & Condition of Unit 2 Primary Focus of Site Tour.List of Attendees Encl ML20248E0351989-08-0202 August 1989 Summary of 890710,11 & 12 Meetings W/Util at Plant Site Re Electrical Issues,Including Cable Ampacity & Ac/Dc Electrical Distribution Necessary to Support Full Power Operation.Agenda,List of Attendees & Handouts Encl IR 05000259/19890101989-06-29029 June 1989 Summary of 890606 Meeting W/Util in Rockville,Md Re Handling of Clay Pipe Issue & Condition Adverse to Quality Program, Per Findings in Insp Repts 50-259/89-10,50-260/89-10 & 50-296/89-10.List of Attendees & Presentation Slides Encl ML20245K3021989-06-22022 June 1989 Summary of 890615 Meeting W/Util in Rockville,Md Re Proposed Tech Spec Change 251 Dealing W/Table 3.7.A, Primary Containment Isolation Valves ML20247M5061989-05-26026 May 1989 Summary of 890511 Meeting W/Util & Bechtel North American Power in Rockville,Md Re Cable Separation Issue.Tva Presented Results of Reverification Effort Re Data Used in 890314 Meeting.Attendance Roster & Meeting Transcript Encl ML20247K0901989-05-23023 May 1989 Summary of 890517 Meeting W/Inpo Re Similarities & Differences Between Performance Indicator Programs.Detailed Discussion Encl ML20247K1011989-05-16016 May 1989 Summary of 890517 Meeting W/Inpo in Bethesda,Md Re Similarities & Differences Between INPO & NRC Performance Indicators ML20245F2751989-04-24024 April 1989 Summary of 890420 Meeting W/Util in Rockville,Md Re Generic Ltr 88-01 Concerning RWCU Sys Piping Outside Drywell Penetration.List of Attendees & Slides Encl ML20245E0021989-04-21021 April 1989 Summary of 890406 Meeting W/Util at Plant Re Dcrdr Human Engineering Discrepancy Closure Status ML20248G9901989-04-0303 April 1989 Summary of 890315 Meeting W/Util in Rockville,Md Re Util Safe Shutdown Tech Spec Chronology.Licensee Also Discussed App R Implementation Methodology & Outlined Specific Safe Shutdown Program for Unit 2.List of Attendees & Info Encl ML20247E7221989-03-24024 March 1989 Summary of 890314 Meeting W/Util in Rockville,Md Re Presentation on Plant Cable Separation Issues.Util Has Not Yet Documented Approach for Cable Separation Resolution ML20247B3101989-03-22022 March 1989 Summary of 890113 Meeting W/Util in Rockville,Md Re Civil/ Seismic Open Issues.List of Participants & Slides Used in Licensee Presentation Encl NUREG-1061, Summary of 890217 Meeting W/Util in Rockville,Md Re Resolution of Open Civil/Seismic Issues for Plant.List of Attendees & Slide Presentation Encl1989-03-22022 March 1989 Summary of 890217 Meeting W/Util in Rockville,Md Re Resolution of Open Civil/Seismic Issues for Plant.List of Attendees & Slide Presentation Encl ML20247D0131989-03-22022 March 1989 Summary of 890105 Meeting W/Util in Rockville,Md Re Civil & Seismic Issues,Including Methodology to Address IE Bulletins 79-14 & 79-02.List of Meeting Attendees & Viewgraphs Encl ML20236D2021989-03-14014 March 1989 Summary of 890307 Meeting W/Licensee in Rockville,Md to Discuss Licensee Proposed Methodology for Cable Separation. Attendance Roster Listed in Encl 1 & Licensee Viewgraphs in Encl 2 ML20235V0641989-03-0101 March 1989 Summary of 890216 Meeting W/Util in Rockville,Md Re TVA Statistical Methodology on Electrical Cable Separation. Agenda & List of Attendees Encl ML20245H8011989-02-23023 February 1989 Summary of Operating Reactors Events Meeting 89-08 on 890222.Attendee List & Events Discussed & Significant Elements of Events Encl ML20235L8491989-02-15015 February 1989 Summary of 890201-03 & 06 Meetings at Site Re Electrical Cable Installation & Ampacity Issues & Action Plan for Closure.Attendance Rosters & List of Major Items Which TVA Is to Accomplish as Part of Resolution of Cable Issue Encl ML20196E7241988-12-0606 December 1988 Summary of 881130 Meeting W/Util in Rockville,Md Re Cable Separation.Attendance Roster & Viewgraphs Encl ML20154Q5581988-09-29029 September 1988 Summary of 880913 Meeting W/Util at Sequoyah Site to Discuss Browns Ferry Unit 2 Fuel Load.List of Attendees & Viewgraphs Encl ML20207J5411988-09-19019 September 1988 Summary of 880908-09 Meetings W/Util in Rockville,Md to Discuss Resolution of Ieb 79-14 Restart Issues ML20154A7791988-09-0101 September 1988 Summary of 880810 Meeting W/Util in Decatur,Al Re Diesel Generator Concerns Resulting from Restart Test Program.List of Attendees,Agenda & Related Info Encl ML20151Y6301988-08-19019 August 1988 Summary of 880811 Meeting W/Util in Rockville,Md Re Control Room Ventilation Sys.List of Meeting Attendees & Viewgraphs Encl ML20151S8671988-08-0909 August 1988 Summary of 880707 Meeting W/Util at Plant Site Re Fuel Load Issues & Power Ascension Plans.Viewgraphs,Agenda & List of Attendees Encl ML20151R6911988-08-0404 August 1988 Summary of 880721 Meeting W/Util in Rockville,Md Re Plant Electrical Cable Installation.List of Attendees & Viewgraphs Encl ML20151L4521988-07-27027 July 1988 Summary of 880621 Meeting W/Util in Rockville,Md Re Plant Restart Test Program.Meeting Roster,Agenda & Procedures Encl ML20151H7341988-07-21021 July 1988 Summary of 880630 Meeting W/Util in Rockville,Md Re Criteria of IE Bulletin 79-14 Resolution at Facility 1999-04-07
[Table view] |
Text
'o. UNITED STATES
!" b NUCLEAR REGULATORY COMMISSION
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WASMNGTON, D. C. 20666 August 19, 1988 k ..... /
Docket No. 50-260 LICENSEE: Tennessee Valley Authority FACILITY: Browns Ferry Nuclear Plant, Unit 2
SUBJECT:
SUMMARY
OF OSP/TVA MEETING ON CONTROL ROOM EMERGENCY VENTILATION SYSTEM On August 11, 1988, the staff met with the Tennessee Valley Authority (TVA or the licensee) at the White Flint Building to discuss the Browns Ferry Control Room Emergency Ventilation System (CREYS). Enclosure 1 lists the meeting participants.
The licensee made a presentation describing the as-configured design of the CREVS and the identification of a potential problem with unfiltered duct leakage bypassing the CREVS. Enclosure 2 contains the slides used in the licensee presentation.
TVA provided a technical presentation (Enclosure 2) on the short tam solution to the identified problem. TVA's presentation included calculated dose estimates to control room operators based upon specific unfiltered leakage cases during specific accident events. The staff raised several questions concerning the selection of the appropriate design basis accident since main steam ifne breaks were not specifically addressed in the TVA presentation. The staff also noted that the projected operater dose calculations using the ;
exfiltration case would most certainly require identification of compensatory measures by the licensee. As a result of discussions, the staff and TVA ,
t identified specific commitments and schedules for the potential resolution of I this issue. These comitments are identified in Enclosure 3 and are susinarized below:
TVA will provide technical justification in tems of dose calculations from spesified design basis accidents cases. This technical justification will be in support of a proposed Unit 2 liconse amendment to pemit one cycle of operation without a fully functional CREVS. Due September 30, 1988.
As part of the above submittal, TVA will provide a discussion on potential compensatory actions and a comitment to employ specific ccepensatory l actions, when and where appropriate. -
TVA will provide its long tem resolution and implementation sched91e for l identified CREVS functional deficiency within 90 days after restart of Unit 2.
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- NRC will review TVA's proposed technical justification and compensatory actions within 60 days of the receipt of TVA's submittal. ;
l.s l Gerald E. Gears, Project Manager TVA Projects Division Office of Special Projects
Enclosures:
- 1. Attendanco List
- 2. Control Room Emergency Ventilation System
- 3. TVA Commitments cc w/ enclosures:
See next page DISTRIBUTION i Docket File NRC PDR Local PDR Those on Attached List 1
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OF0 :0SP:TVA/LA :0SP:TVA/PM :TYA: app : : : : ;
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NAME iMSimms /h bb :GG :SBla6 : : : : 1 i .....:............:.... .......:............:.................................................
DATE !8//t7/88 :8//4/88 i
- 8/l9/88 : : : : i i
Mr. S. A. White Browns Ferry Nuclear Plant cc:
General Counsel Regional Administrator, Region II Tennessee Valley Authority U.S. Nuclear Regulatory Comission 400 West Sumit Hill Drive 101 Marietta Street, N.W.
Eli B33 Atlanta, Georgia 30323 Knoxville, Tennessee 37902 Resident Inspector / Browns Ferry NP Mr. R. L. Gridley U.S. Nuclear Regulatory Comission Tennessee Valley Authority Route 12, Box 637 SN 157B Lookout Place Athens, Alabama 35611 Chattanooga, Tennessee 37402-2801 Mr. C. Mason Dr. Henry Myers, Science Advisor Tennessee Valley Authority Comittee on Interior Browns Ferry Nuclear Plant and Insu'iar Affairs P.O. Box 2000 U. S. House of Representatives Decatur, Alabama 35602 Washington, D.C. 20515 Tennessee Valley Authority Mr. M. J. May Rockville Office Tennessee Valley Authority 11921 Rockville Pike Browns Ferry Nuclear Plant Suite 402 P.O. Box 2000 Rockville, Maryland 20852 Decatur, Alabama 35602 Mr. D. L. Williams Tennessee Valley Authority 400 West Sumit Hill Drive W10 B85 Knoxville, Tennessee 37902 Chairman, Limestone County Comission P.O. Box 188 Athens, Alabara 35611 l Claude Earl Fox, M.D.
State Health Officer State Departrient of Public Health State Office Buildir.g Montgomery, Alabama 36130 l
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ENCLOSURE 1 LIST OF ATTENDEES AUGUST 11, 1988 TVA/NRC MEETING l CONTROL ROOM HABITABILITY Name Organization Steven kane TVA/BFN/ Licensing Gerry Gears NRC/OSP Janet Kelly NRC/OSP Rex Wescott NRC/OSP Irwin Spickler NRC/NRR Phil Polk TVA William A. Eberly TVA Charlie Anderson TVA ,
Charles A. Chandley TVA Robert Pierson NRC/OSP i Charles R. Nichols NRC/NRR Mike May TVA/BFN/ Licensing ;
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CONTROL ROOM EMERGENCY VnNTILATION-SYSTEM .
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BROWNS FERRY CONTROL ROOM EMERGENCY VENTILATION SYSTEM DEFINITION OF PROBLEM o CAQR BFP 870531 OBSERVED POTENTIAL PROBLEM VITH UNFILTERED DUCT LEAKAGE BYPASSING THE CREV SYSTEM o EMERGENCY SUPPLY AIR DUCT TRAVERSES CONTROL ROOM AND SE AMS LE AK e, NORMAL HVAC ISOLATION DAMPERS LEAX o LEAKAGE IS SIGNIFICANT (1800-3000 cfm) COMPARED WITH CREV FLOW OF 500 cfm o LEAKAGE NOT CONSIDERED IN CONTROL ROOM DOSE CALCULATIONS o CREV FLOW IS SUPPLEMENTED BY THE LEAKAGE TO MEET THE CONTROL ROOM PRESSURIZATION DESIGN OBJECTIVE 4
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BROWNS FERRY CONTROL ROOM EMERGENCY VENTILATION SYSTEM BACXGROUND o BROWNS FERRY FS AR J l
- SECTION 10.12 DESCRIBES THE CREV SYSTEM 1
- SECTION 14.10.5 DESCRIBES CONTROL ROOM SHIELDING AND DOSE CALCULATIONS
- ORIGINAL FS AR QUESTION 10.2 RESPONSE DESCRIBED CONTROL ROOM DOSE VITH CREVS AND EXFILTRATION FROM REACTOR BUILDING
- NO CREV PERFORMANCE ANALYSIS IN UPL ATED FS AR o TMI ITEM III.D.3.4 (NUREG-0737)
- TVA RESPONDED MARCH 17,1981
- REFERRED TO FSAR SECTION 14.10.5 FOR SHIELDING AND DOSE CALCULATIONS
- REFERRED TO QUESTION 10.2 RESPONSE FOR CREVS DESIGN DETAILS
- SUMMARIZED UPDATED HAZARDOUS CHEMICAL EVALUATION
- PROVIDED LIST OF ADDITIONAL DESIGN DETAILS
- STATED THAT PRESENT TECH SPECS ENSURE HABITABILITY l
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BROWNS FERRY
- CONTROL ROOM EMERGENCY VENTILATION SYSTEM BACKGROUND o NRC SAFETY EVALUATION (ITEM III.D.3.4)
- ISSUED AUGUST 30, 1982
- FOUND TVA RESPONSE ACCEPT)7LE FOR NORMAL AND ACCIDENT RADI ATION AND T0XIC GAS CONDITIONS
- OBSERVED WHOLE BODY EXPOSURE LIMITED TO LESS THAN 5 REM
- DID NOT ADDRESS GDC-19 THYROID LIMIT OF 30 REM o TECHNICAL SPECIFICATIONS
- CREVS ADDRESSED IN SECTION 3.7.E/4.7.E
- LCO REQUIRES BOTH TRAINS OPERABLE WITH FUEL IN REACTOR VESSEL
- ALLOWS ONE TRAIN INOPERABLE FOR UP TO 7 DAYS
- REQUIRE COLD SHUTDOWN IN 24 HRS AND TERMINATION OF REFUELING OPERATIONS IF MORE THAN 7 DAYS
- BASES CALL FOR LESS THAN 1 PERCENT BYPASS OF CHARCOAL FILTERS AND " ALL LEAKAGE SHOULD BE OUTLEAXAGE" FROM CONTROL ROCH l
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- , - - , _ . . _ - .- ~~ _ . _ - - --
. TABLE 1
- CONTROL ROOM OPERATOR DOSES FOR LOCA AND FUEL H ANDLING ACCIDENT (FHA)
CONSIDERING CREVS BYPASS LEAKAGE WITHOUT EXFILTRATION FROM SECONDARY CONTAINMENT CASE PARAMETERS 30 DAY OPERATOR DOSE (rem)
Unfiltered Filtered Whole Body Whole Body Accident Bypass, CREV Flow, Gamma Beta Thyroid cfm cfm t
LOCA 2750 500 1.77 0.24 10.5 e
LOCA 726 500 1.77 0.23 7.3 FHA 2750 500 0.27 0.24 12.3 FHA 726 500 0.27 0.24 8.6 NOTES:
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l BROWNS FERRY CONTROL ROOM EMERGENCY VENTILATION SYSTEM i
l DESIGN BASIS FOR CONTROL ROOM HAEITAEILITY l
o CONTROL ROOM IN-LEAKAGE
- NOT RECOGNIZED IN ORIGINAL CREV DESIGN l
- MINIMAL (10 cfm) CONSIDERED IN DOSE CALCULATIONS i PRIOR TO THIS CONCERN o DOSE CALCULATIONS
- QUESTION 10.2 RESPONSE
TOTAL WHOLE BODY DOSE LESS THAN 2 REM TOTAL THYROID DOSE LESS THAN 24 REM I
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BROWNS FERRY CONTROL ROOH EMERGENCY VENTILATION SYSTEM DESIGN BASIS FOR CONTROL ROOM HABITABILITY o DOSE CALCULATIONS (CONT'D) )
CURRENT CALCULATION
- CONSIDERED LOCA, FUEL HANDLING, ROD DROP AND STEAM LINE BREAX ACCIDENTS
l S5ACK RELEASES 2750 CFM CREV BYPASS !
RECENT METEOROLOGY
LOCA IS CONTROLLING CASE l TOTAL WHOLE BODY DOSE LESS THAN 2 REM TOTAL THYROID DOSE = 10.5 REM
- EXFILTRATION CASE
- INCLUDES EXFILTRATION RELEASE PATH (GROUND LEVEL)
TOTAL WHOLE BODY DOSE LESS THAN 1 REM TOTAL THYROID DOSE = 295 REM 1
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l TABLE 2 QpNTROL qqqd,0PERATOR DOSES FOR LOCA CONSIDERING C ;V5 BYPASS LE AK AGE WITH EXFILTRATION FROM SECOND ARY _ CONTAINMENT l
se l 30 DAY OPERATOR DOSE (rem)
LOCA CASE P ARAMETERS ,
SC Whole Body Whole Body !
Unfiltered Filtered Thyroid CREV Flow, Pressure, Gamma Beta Bypass, cfm cfm in. WG
-0.25 0.09 0.93 295. f 2750 500 i
" 0.09 0.90 280. ]
2200 500
" 0.06 0.67 107.
300 500
" 0.06 0.68 30.
100 1000 I 2750 500 -0.50 0.05 0.50 91.
l 500 -0.60 0.03 0.33 13. l 2750
., i NOTES:
- These results include stack release contribution based on a J refined dispersion factor for fumigation conditions.
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BROWNS FERRY l
CONTROL ROOM EMERGENCY VENTILATION SYSTEM l I
l PROPOSED SOLUTION DESIGN CONSIDERATIONS l i
o DUCT SEALING IS LESS THAN PERFECT
- RESIDUAL LEAXAGE ESTIMATED AT 10%
- SEALS MAY DEGRADE WITH TIME
- NOT ALL SEAMS ACCESSIBLE o POTENTI AL NEED FOR ADDITIONAL CREV CAPACITY IS HIGH o LONG LEAD TIME ON NEW CREV UNITS (MORE THAN 6 MONTHS) o DISRUPTIVE TO THE CONTROL ROOM o ASBESTOS FIBERS FOUND IN SOME DUCT INSULATION CEMENT j
o POSITIVE PRESSURE ENVELOPE DESIGN OBJECTIVE MORE IMPORTANT THAN CREV BYPASS CONCERN o DESIRE AN OPTIMUM SOLUTION CONSIDERING ALL CONTROL ROOM DESIGN OBJECTIVES ,
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BROWNS FERRY CONTROL ROOM EMERGENCY VENTILATION SYSTEM PROPOSED SOLUTION SCHEDULE !
1 PHASE I o DEFINE THE PROBLEM 8/11/88 o EVALUATE HABITABILITY CONSEQUENCES 8/11/88 o IMPLEMENT DAMPER REFURBISHMENT 8/11/88 o DEVELOP TECHNICAL JUSTIFICATION FOR U2C5 8/11/88 AND FOR PHASE II PLAN
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- BROWNS FERRY CONTROL ROOM EMERGENCY VENTILATION SYSTEM PROPOSED SOLUTION SCHEDULE PHASE II o IDENTIFY OPTIONAL SOLUTIONS (SEE EXAMPLE) 9/30/88 o DEFINE SELECTION CRITERIA (SEE EXAMPLE) 9/30/88 o DEVELOP INPUT AND EVALUATE OPTIONS 10/15/88 (TECH. DATA, COST, SCHEDULE, ETC.)
o PERFORM DECISION ANALYSIS (KT) TO SELECT 11/01/88 2 OPTIONS (PRIMARY & ALTERNATE) o DEVELOP DETAILS ON SELECTdD OPTIONS 1/01/89 o CHECK / CONFIRM DECISION ANALYSIS 1/15/89 o PRESENT TO NRC FOR CONCURRENCE 1/31/89 o DEVELOP DESIGN CHANGE PACKAGE (S) o IMPLEMENT NODIFICATIONS o REVISE LICENSING DOCUMENTS o REVI.9E PROCEDURES & TRAINING o POST-MOD TEST o DESIGN CLOSURE 6/30/90 a
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BROWNS FERRY CONTROL ROOM EMERGENCY VENTILATION SYSTEM CREVS PLAN - PHASE II EXAMPLE SELECTION CRITERIA PROBLEM: HVAC DUCTWORK LEAXS, COMPROMISING THE CREVS DESIGN CONCEPT AND CREVS PRESSURIZATION CAPACITY IS LIMITED SOLUTION: HUST CRITERIA
- 1. YIELD CONTROL ROOM DOSES WITHIN ODC-19 LIMITS
- 2. MINIMIZE CREV FILTER BYPASS TO RESTORE CREV CONCEPT
- 3. BE IMPLEMENTED BEFORE U2C6, ASSUME BY 6/30/90
- 4. NOT CREATE OTHER PROBLEMS (DIESEL LOAD, EQ, SEISMIC, FIRE PROTECTION, ETC.)
- 5. MUST SUPPORT POSITIVE PRESSURE DESIGN REQUIREMENT WANT CRITERIA
- 1. MINIMIZE IMPACT ON OJERATIONS
- 2. IMPLEMENT WITH FUEL IN REACTOR VESSEL
- 3. MINIMIZE LICENSING / TECH SPEC CHANGES
- 4. MINIMIZE DISRUPTION TO CONTROL ROOM
- 5. MAXIMIZE COMPLI ANCE WITH LATEST STANDARDS
- 6. MINIMIZE COST i
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ggEVS PL AN - P H ASE II l I
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l IXAMPLE SOLUTION OPTIONS 1
- 1. SEAL DUCTWORK AND INSTALL LARGER CAPACITY CREV UNITS j 1
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- 2. REPLP.CE DUCTWORK WITH ALL WELDED AND REPLACE CREVS
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- 3. REROUTE DUCTWORK OUTSIDE CONTROL ROOM AND REPLACE CREVS l 4. REDUCE HABITABILITY ZONE ENVELOPE TO EXCLUDE DUCTWORK j (NEMBRANE) AND REPLACE CREVS l
- 5. PROVIDE ADDITIONAL CREY UNIT (S) WITH DEDICATED OUTSIDE I AIR SOURCE AND ISOLATE MAIN SUPPLY FOR SHORT PERIOD OF HIGH WIND $0LLOWING LOCA l i
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- 6. UPGRADE THE EMERGENCY SUPPLY AIR SYSTEM TO INCLUDE 1 CHARCOAL FILTERS AT THE INTAXES l i
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4 BROWNS FERRY CONTROL ROOM EMERGENCY VENTILATION SYSTEM PROPOSED SOLUTION JUSTIFICATION o POSSIBLE RESOLUTIONS 4
INVOLVE EXTENSIVE HARDWARE AND LICENSING CHANGES
- DIFFICULT TO IMPLEMENT IN SHORT TERM
- INTRUSIVE / DISRUPTIVE TO CONTROL ROOM
- HAVE POTENTIAL TO CREATE OTHER CONCERNS IF IMPLEMENTED HASTILY o DOSE RESULTS WITH EXISTING LEAKAGE CONDITION ARE WELL BELOW GDC-19 LIMITS (EXFILTRATION IS BEYOND DESIGN BASIS) l i
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Enclosure 3
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, ' O!STRIBUTION FOR MEETING
SUMMARY
DATE0*ugust 19,1988 Facility: Brewis Ferry Nuclear Plant, Unit 2*
OISTRIBUTION
,.Doctet m e
- NRC POR Local POR Projects Reading OSP Reading J. Partlow S. Richardson S. Black B. D. Liaw i G. Gears
- D. Moran J. Kelly M. Sims F. McCoy J. Rutberg R. Wescott I. Spickler R. Pierson C. Nichols ACRS(10)
GPA/PA ,
GPA/CA (M. Callahan) (5) i F. Miraglia E. Jordan B. Grimes P. Gwynn J. Scarborough T. Elsasser C. Ader BFN Rdg. File f
,y