|
|---|
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
M ' cas.\
MAR 171987 Docket Nos. 50-259, 50-260, 50-296 License Nos. DPR-33, DPR-52, DPR-68 Terpiessee Valley Authority TTN: Mr. S. A. White Manager of Nuclear Power 6N 38A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Gentlemen:
SUBJECT:
MEETING
SUMMARY
- BROWNS FERRY NUCLEAR PLANT, UNIT 2, DOCKET NO. 50-260 This refers to the management meeting conducted at your request, in the Region II Office on February 9, 1987. This meeting was held to discuss problems encountered with Browns Ferry Unit 2 safe end to reactor pressure vessel (RPV) nozzle welding, problem investigation, and your future course of action. A meeting summary of the topics discussed is provided in Enclosure 1.
Enclosure 2 is the attendance list, and the licensee's handout material is provided in Enclosure 3.
It is our opinion that the meeting was beneficial and has provided a better understanding of the actions taken by TVA in resolving welding concerns.
In accordance with Section 2.790 of NRC's " Rules of Practice," Part 2, Title 10, Code of Federal Regulations, a copy of this letter and its enclosures will be placed in the NRC Public Document Room.
Should you have any questions concerning these matters, we will be pleased to discuss them.
, MIMdl$lGNED BY GARY G. 2ECH Gary G. Zech, Assistant Director, Regional Inspections Division of TVA Projects Office of Special Projects
Enclosures:
- 1. Meeting Summary
- 2. Attendance List
- 3. Licensee Handout Material cc w/encis: (See page 2) 8704030050 870317 PDR ADOCK 05000260 P PDR 1GW
Tennessee Valley Authority 2 MAR 171987 cc w/encis:
LK. P. Pomrehn, Site Director Jrowns Ferry Nuclear. Plant
- 4. L. Gridley, Director clear Safety and Licensing
. W. Cantrell, Acting Director lear Engineering J. May, Site Licensing Manager be w/encis:
LJ . Keppler, OSP
. Ebneter, OSP
/A.Zwolinski,OSP D. Liaw, OSP R. Connelly, 0IA
. P. Barr, RII IN(C Resident Inspector NRC Document control Desk State of Alabama RII RI 00c(I AIgnatonis:er KB 03//f /87 / 7
ENCLOSURE 1 MEETING
SUMMARY
On February 9,1987, representatives of Tennessee Valley Authority (TVA) met with the NRC, at TVA's request, to discuss Browns Ferry Unit 2 safe end to reactor pressure vessel (RPV) nozzle welding concerns, problem investigation, and the future course of action.
TVA provided an overview of the recirculation piping inlet safe end to RPV weld program starting with a brief information background, commencement of production welding, problems enccuntered and its identification, problem investigation, future work plans, and lessons learned. The presented material is enclosed. Prior to performing any production welding on replacement system piping, the licensee prepared and performed mockup welds. These mockup welds were inspected by radiographic testing (RT) and no rejectable defects were found. On January 4,1987, production welding of the safe end to the nozzle commenced. Nozzles "G", "F", and "J" were welded and RT inspections were performed. For the first nozzle "G" no indications were identified by the Level II inspector. Nozzle "F" and "J" were also RT inspected, but by a Level III inspector who came to the site after production welding commenced.
The Level III inspector identified indications on "F" and "J" nozzle welds, as I well as on the "G" nozzle weld. As a result, TVA stopped production welding on January 7, 1987.
l l The linear indications always appeared in the upper half of the pipe a
circumference and on the nozzle side. The dark line exhibited in the radiograph was interpreted to be as an abrupt density change by TVA. TVA initiated on an informal basis a three prong problem investigation effort. The areas being investigated were mockup work, additional NDE analysis, and additional engineering analysis. TVA was able to reproduce the root condition (i.e. indication) on mockup welding by having a large angle on the chamfer and welding being performed in the upper half of the circumference. The additional NDE analysis included radiograph enhancement and UT analysis of the weld. In the engineering analysis area, TVA planned to review the ASME Code requirements and analyze nozzle repair configurations if needed. TVA was reluctant to repair the nozzle welds because of the potential in creating new problems; however, if the UT, RT enhancement, and boroscope results warranted cutting and repair of nozzle welds, then they would do it.
- TVA also researched similar work performed at the Peach Bottom and Vermont
^
Yankee facilities. The Vermont Yankee radiographs of the safe end to nozzle welds also exhibited dark lines, but the indications were not attributed by the chamfer angle effect. Their problem was different and the repairs were made as j needed.
i e
.--y _. , , __
_ - . , _ , _ _ _ _ _ , . , _ . _ , , - . - _ . _ . _ , n
Enclosure 1 2 i
For the lessons learned, TVA concluded that they should have had Level III inspector involvement early in the project and should have had better project control. However, once the problems surfaced TVA has stated that they quickly responded to them, although no formal (written) plans were made for the recovery effort. The Site Director was fully involved in the problem investigation. TVA committed to document their work and inform the NRC prior to restart of production welding.
I i On February 27, 1987, TVA informed the NRC of their intent to resume production
. welding. Production welding on the "B" nozzle was completed and radiographed
} as satisfactory. The large angle on the chamfer was verified to be the principle contributor of the safe end to nozzle welding problem.
I i
i I
l 1
i
)
4 1
1 ENCLOSURE 2 MEETING ATTENDEES U.S. Nuclear Regulatory Commission G. G. Zech, Assistant Director, Regional Inspection, DTVA, OSP K. P. Barr, Deputy, Assistant Director, Regional Inspections, DTVA, OSP A. J. Ignatonis, Chief, Projects Section 2, DTVAP, OSP A. R. Herdt, Chief, Engineering Branch, Division of Reactor Safety (DRS)
J. J. Blake, Chief, Materials and Processes Section, DRS J. L. Coley, Reactor Inspector, i RS E. H. Girard, Reactor Inspector, DRS R. W. Newsome, Reactor Inspector, DRS Tennessee Valley Authority l H. P. Pomrehn, Site Director, Browns Ferry j M. J. May, Manager of Licensing, Browns Ferry
- E. Hartwig, Project Manager, Browns Ferry Project Management.
4 S. P. Stagnolia, Section Manager, Nozzle Replacement Group
- A. J. Everitt, Welding Engineer, Nozzle Replacement Group
- R. McKenna, Project Management, Browns Ferry l N. R. Bentley, BDE Engineer M. Turnbow, ISI/QA Engineer J. H. Fox, Senior Metallurgical Engineer Electric Power _Research Institute (EPRI) NDE Center J. A. Disney i-f 4
i i
i I
W e
ENCLOSURE 3 LICENSEE HAND 0UT MATERIAL
'. ? V A BROWNS FERRY - UNIT 11 SAFE END TO RPV NOZZLE WELO PROGRAM
- FEBRUARY 9,1987 MEETING IN NRC OFFICES ATLANTA, GA.
OUTLINE OF DISCUSSION
= PREFIELD WELDING
= WELDING ON RPV COMMENCES
= PROBLEM IDENTIFICATION
= PROBLEM INVESTIGATION
= ADDITIONAL MOCK UP PROGRAM INITIATED
= ADDITIONAL NDE ANALYSIS INITIATED -~
~
= ADDITIONAL ENGINEERING ANALYSIS INITIATED a CONSULTATION WITH EXPERTS
+
= CURRENT STATUS '
~
= FINAL VERIFICATION ON MOCKUP WITH -
REVISED WELDING PARAMETERS
= FUTURE WORK PLANS
= LESSONS LEARNED
?
i
~
SAFE END TO RPV NOZZLE WELD PROGRAM PRE FIELO WELOING KICK OFF MEETING WITH NRC NOVEL BER 4,1986
= EQUIPMENT AVAILABLE AND OPERATIONAL
= WELDING PROCEDURES OUALIFIED
= MOCK UPS OF WELO MADE
-RT INSPECTION OF WELDS PERFORMED TESTING OF WELDERS 1
I 9
e--.___-----..__-.-._--_-._.____--.-
l l
l SAFE END TO RPV NOZZLE WELD PROGRAM WELDING ON RPV COMMENCES
= STARTING DATE JANUARY 4,1987 ON SAFE END TO NOZZLE
= FIRST NOZZLE (G) INSPECTED BY RT 4
- IN PROCESS ROOT CONSUMED PLUS FOUR HOT PASSES
- INDICATION NOT IDENTIFIED BY LEVEL ll INSPECTOR SECOND AND THIRD NOZZLES (F AND J) INSPECTED BY RT l
l - IN PROCESS (ROOT CONSUMED PLUS FOUR HOT PASSES)
- LACK OF FUSION IDENTIFIED IN NOZZLE (F).
1
- LACK OF FUSION REMOVED BY EXCAVATION .
- (F) AND (J) REVIEWED AND INDICATION IDENTIFIED BY LEVEL lli ~ '
-(G) NOZZLE REVIEWED AND INDICATION IDENTIFIED BY LEVEL 111
= TVA STOPPED PRODUCTION WORK ON JANUARY 7,1987 .
4 3
9
- i
r SAFE END TO RPV NOZZLE WELD PROGRAM l
1 PROBLEM IDENTIFICATION
= ABRUPT DENSITY CHANGE
= LINEAR INDICATION CHARACTERISTICS
- ALWAYS ON NOZZLE SIDE
- PARALLEL TO ROOT PASS
- OUTSIDE OF ROOT AREA
- ALWAYS IN THE UPPER HALF OF THE PIPE CIRCUMFERENCE
= LACK OF FUSION
- ONE TWO INCH LACK OF FUSION FOUND AND -
REMOVED SUCCESSFULLY ON NOZZLE (F) i i
S
SAFE END TO RPV NOZZLE WELD PROGRAM PROBLEM INVESTIGATION GRINDING ON (F) AND (J) NOZZLES IN AREAS OF INDICATION - JANUARY 9,1987
- HOT PASSES REMOVED (ROOT PASS REMAINS)
- NO IRREGULARITIES FOUND
- INDICATION REMAINS
= (G) NOZZLE WELDED OUT AND RT TAKEN. INDICATION REMAINS - JANUARY 14,1987 i
S
/
l
f i
SAFE END TO RPV NOZZLE WELD PROGRAM i
ADDITIONAL MOCK UP PROGRAM INITIATED
= PHIPPS BEND RPV NOZZLE
- USE SAME PARAMETERS AS PRODUCTION WELDS
- RT TAKEN IN PROCESS SET UP BEFORE WELDING AFTER INSERT CONSUMED FIRST HOT LAYER - TWO PASSES SECOND HOT LAYER - TWO PASSES THIRD HOT LAYER -
FULL WELD OUT
- NONE OF THE RT EXAMINATIONS SHOWS THE SUBJECT INDICATION CONSTRUCT ADDITIONAL PIPE TO PIPE MOCK UPS
- MATRIX DETAILING MOCK UPS
/
= ROOT CONDITION REPRODUCED ON PIPE TO PIPE MOCKUP -
ONLY WHEN: I
- LARGE ANGLE ON CHAMFER
- CHAMFER SIDE ONLY
- UPPER HALF OF THE WELD
SAFE END TO RPV NOZZLE WELD PROGRAM ADDITIONAL NDE ANALYSIS INITIATEO
= PARALLAX RT ON NOZZLE G
- RADIOGRAPHS SENT TO APTECH FOR STUDY
- RESULTS OF STUDY
= DIGITAL ENHANCEMENT OF RADIOGRAPHS
- BY APTECH
- - RESULTS OF STUDY
= UT ANALYSIS OF WELD.
- QUALIFY PROGRAM
- APPLICATION OF l-98 PROGRAM
- EXAMINATION OF PHIPPS BEND MOCKUP AND NOZZLE G
- RESULTS OF EXAMINATION
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SAFE END TO RPV NOZZLE WELD PROGRAM LESSONS LEARNED
= USE UT TO COMPLEMENT RT BETTER SIMULATION OF PLANT CONDITIONS EARLY LEVEL lli INVOLVEMENT e
J e
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SAFE END TO RPV NOZZLE WELD PROGRAM i
ADDITIONAL ENGINEERING ANALYSIS INITIATED REVIEW OF CODE INTERPRETATION 2'
- INTERPRETATION FOUND CONCERNING DRESDEN
' t' PLANT- .
CONCERNS CENTER ON ROOT CONDITION - DOES NOT APPLY TO BF ., -
= OESIGN ANALYSIS OF WELO JOINT CONFIGURATION
- NOZZLE DESIGN REPORT REVIEW
- STUDY OF HEAT INPUT VS SHRINKAGE -
~
= ANALYSE NOZZLE REPAIR CONFIGURATIONS.
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4
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SAFE END TO RPV NOZZLE WELD PROGRAM CONSULTATION WITH EXPERTS TVA
= OTHER BWR PLANTS
= DESIGN ENGINEERING FIRMS
= EPRI e
9 CONTRACTORS
/
I I
Z
. - 4-- - - - ---- -- - - ...- , , .,--,,, -- , , --- . ,y- - --~- , . . - - -,,-- - - ,- -
SAFE END TO RPV NOZZLE WELD PROGRAM CURRENT STATUS
= EVALUATING UT REPORT ON PHIPPS BEND NOZZLE
= EVALUATING UT REPORT ON G NOZZLE
= OlGITAL ENHANCEMENT OF RT -
= VERIFICATION MOCKUPS IN FABRICATION
. c l
SAFE END TO RPV NOZZLE WELD PROGRAM FINAL VERIFICATION ON MOCK UP WITH REVISED WELDING PARAMETERS
- = RETAIN CONFIGURATION OF FIELD W5LD
= ADD CHAMFER DETAIL TO DUPLICATE FIELD AS BUILT.
~
= INSERT PLACEMENT NO CHANGE
= CONSUME INSERT USING EXISTING PARAMETERS
= HOT PASSES (ONE LAYER OVER ROOT) USING EXISTING '
PARAMETERS
= FILL PASSES TO RECEIVE LESS HEAT INPUT
/
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t f
SAFE END TO RPV NOZZLE WELD PROGRAM c
FUTURE WORK PLAN:
j = RESUME PRODUCTION WELDING USING:
- MODIFIED IN PROCESS INSPECTION PROGRAM
- REVISED WELDING PARAMETERS a NOZZLE G !
= NOZZLES F & J
- PROGRAM FOR WELD DISPOSITION r
/
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